Circuitos integrados

LM2902PWRG3

LM2902PWRG3 - 26V Quad 1.2MHz Op Amp | Texas Instruments

Texas Instruments LM2902PWRG3 is a quadruple general-purpose operational amplifier with four independent amplifiers, 26 V maximum supply capability, 1.2 MHz gain-bandwidth product, and 2 mV input-offset voltage. Each channel is frequency compensated and designed for single-supply or split-supply operation, making the device suitable for general analog signal conditioning, industrial control, and instrumentation. The component is packaged in a 14-pin TSSOP (PW) package supplied in tape-and-reel format. An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between two input voltages. A quad operational amplifier combines four amplifiers in one package, allowing a design to process four signals while reducing board area and package count. The LM2902 belongs to the operational-amplifier hierarchy within analog and mixed-signal semiconductors, and its wide supply range makes it useful in industrial systems operating above conventional low-voltage analog rails. The four channels operate from a single supply or from split supplies, allowing different system reference arrangements. Key characteristics include a 1.2 MHz gain-bandwidth product, a 0.5 V/µs slew rate, and a typical supply-current drain of 0.8 mA per amplifier. The input-offset voltage is specified at 2 mV, while the maximum operating supply voltage is 26 V. These characteristics support moderate-bandwidth signal conditioning rather than high-speed precision applications. The LM2902 architecture provides internally frequency-compensated amplifiers, simplifying closed-loop use without an external compensation network. Each amplifier can operate as an inverter, non-inverting gain stage, comparator, buffer, or active filter element when operated within its common-mode and output-swing limits. The 14-lead TSSOP package provides a compact surface-mount format, but its narrow lead pitch requires careful PCB routing and adequate copper area for reliable assembly. Typical uses include industrial sensor interfaces, low-frequency active filters, control-loop error amplifiers, transducer signal conditioning, and four-channel instrumentation systems. Split-supply operation is useful when signals remain bipolar around ground, while single-supply operation fits battery-powered or process-control systems where a mid-supply reference can establish the signal center point. For reliable operation, verify the input common-mode range, output swing, supply current, and channel stability at the intended temperature before finalizing the PCB. Place bypass capacitors close to the supply pins, keep feedback components compact, and avoid routing sensitive input traces beside switching nodes or high-current output paths. This product page combines the manufacturer device specifications with application-focused design guidance, package information, and same-family replacement analysis to support component selection, PCB planning, and sourcing decisions.

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LM2902PWRG4

LM2902PWRG4 - Quad 26V 1.2MHz Op Amp | Texas Instruments

The Texas Instruments LM2902PWRG4 is a standard general-purpose quadruple operational amplifier integrated circuit with four independent amplifiers, a 26 V maximum supply rating, 1.2 MHz gain-bandwidth product, and a 14-pin TSSOP package. It is designed for general-purpose signal conditioning, buffering, amplification, and analog control applications where a cost-effective, multi-amplifier device is required. An operational amplifier is an amplifier IC that uses very high open-loop gain to amplify small differential signals while rejecting common-mode noise and voltage variation. The LM2902 family belongs to the amplifier IC hierarchy, where a quad operational amplifier combines four amplifiers in one package for applications needing several gain stages or multiple independent signal paths. The integrated quad arrangement reduces board area and simplifies system partitioning compared with four separate single or dual amplifier packages. The device is identified as a 4-circuit, 1.2 MHz operational amplifier in a 14-TSSOP package. The LM2902 family is specified for operation from single or dual supplies, with the LM2902 supply rating listed as 26 V. The manufacturer describes the family as an industry-standard, general-purpose platform, and its product information identifies low offset voltage and common-mode input range extending to ground. These characteristics make the device suitable for DC and low-frequency signal paths that do not require the low-noise performance of a precision amplifier. The LM2902 can be used in sensor-interface conditioning, current-voltage conversion, audio and communication signal amplification, active filtering, comparator-style thresholding, and general industrial control. Each amplifier operates independently, allowing four different signal chains to share one package. The wide supply-voltage capability is useful when the signal source operates from a higher rail than the system logic, while the common-mode input range including ground supports sensor interfaces whose signals remain near 0 V. The primary design consideration is supply bypassing and input/output stability. Place the required bypass capacitor close to the supply pins and route high-current return paths carefully to minimize ground displacement. Inputs must remain within the specified common-mode and absolute-maximum limits. Because the LM2902 is a general-purpose amplifier rather than a precision part, offset, bias current, output swing, noise, and slew-rate requirements should be checked against the actual signal chain before precision measurements are attempted. Use the manufacturer datasheet pin-description table and recommended application circuit when assigning PCB tracks. This page provides a practical engineering overview of the LM2902PWRG4, including package identification, functional context, application guidance, verified alternatives, and design considerations for selecting and integrating a quad high-voltage general-purpose operational amplifier.

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LM2902Q4T

LM2902Q4T - 1.3 MHz Quad Op Amp | STMicroelectronics

STMicroelectronics LM2902Q4T is a low-power quad operational amplifier with four general-purpose amplifier circuits, a 1.3 MHz gain-bandwidth product, and a 3 V to 30 V supply-voltage range. The device supports operation from single or dual supplies, uses push-pull outputs, and is housed in a 16-QFN package with an exposed pad. An operational amplifier, or op amp, is an analog integrated circuit that amplifies the voltage difference between its inverting and non-inverting inputs. A quad op amp combines four amplifiers in one package, allowing a PCB to implement multiple signal-conditioning, comparison, filtering, or buffering functions while reducing package count. This device belongs to the operational-amplifier hierarchy within linear and analog integrated circuits. Key specifications include a gain-bandwidth product of 1.3 MHz, slew rate of 0.4 V/µs, large-signal voltage gain of 100 dB, and supply current of 375 µA per amplifier. Its input common-mode voltage range includes the negative supply rail, making it useful in single-supply circuits where signals approach ground. The 3 V to 30 V operating range also supports conventional industrial supply levels. The LM2902Q4T uses a bipolar operational-amplifier architecture designed for general-purpose precision and control applications. Each amplifier has two inputs, an output, and power connections shared with the other three channels. The 100 dB open-loop gain supports closed-loop gains from unity through inverting or non-inverting configurations, while the 1.3 MHz bandwidth limits the frequency range of high-gain stages. Typical uses include low-frequency sensor conditioning, transducer amplification, active filtering, analog signal buffering, power-supply feedback loops, and general instrumentation. In a 3 V single-supply system, the common-mode input range extending to the negative rail helps preserve signal integrity near ground. In dual-supply systems, the 30 V maximum supply supports ±15 V rails. PCB design should prioritize short feedback paths, short output routing, and stable return connections. Place input and feedback components close to the associated amplifier pins, use a common ground plane, and connect the exposed pad to a low-impedance thermal and ground plane according to the package land pattern. Decoupling capacitors should be positioned near the power pins. This product resource combines electrical characteristics, package details, application guidance, design notes, and cross-reference information. The comparisons also distinguish the quad op amp from nearby comparator and alternate-package LM2902-family devices, helping engineers verify footprint, function, and electrical requirements before assigning a replacement.

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LM2902QDRG4Q1

LM2902QDRG4Q1 - Quad 1.2MHz Op Amp | Texas Instruments

Texas Instruments LM2902QDRG4Q1 is a general-purpose, four-circuit operational amplifier with a 1.2 MHz gain-bandwidth product, 0.5 V/µs slew rate, and operation from a single 5 V supply in a 14-pin SOIC package. The four amplifiers are designed for general-purpose signal conditioning and support split-supply operation when the total supply span is appropriate. An operational amplifier is a voltage-controlled, high-gain analog building block used to amplify, buffer, compare, or sum signals. The LM2902 belongs to the broader operational-amplifier family within analog and amplifier ICs. Its four independent channels let one package provide several conditioning functions while conserving board area and simplifying power distribution in industrial, automotive, and control systems. Key operating characteristics include four amplifier circuits, a 1.2 MHz gain-bandwidth product, a 0.5 V/µs slew rate, and an operating-temperature range from -40 °C to 125 °C. The automotive-qualified variant is identified as AEC-Q100 compliant in the product listing. Typical common-mode rejection is listed at 80 dB, while input-bias current is listed at -0.5 µA for the cited conditions. The device uses conventional internally compensated operational-amplifier architecture. Its gain-bandwidth product determines the approximate small-signal bandwidth at a given closed-loop gain, while slew rate limits how quickly the output can follow a large voltage step. For low-frequency precision, sensing, or conditioning functions, the relatively wide common-mode-rejection specification helps reduce output offset caused by common-mode input variation. Typical uses include industrial sensor conditioning, actuator and control-loop signal processing, automotive interface circuits, buffered analog measurement paths, and general low-frequency amplifier stages. Each channel can implement a noninverting or inverting amplifier, voltage follower, comparator-style interface, or summing function when operated within its electrical limits. A key design consideration is supply and output-range verification. Single-supply operation is specified from a 5 V supply in the cited product information, and applications using lower or higher rails must be checked against the manufacturer datasheet. Decoupling capacitors should be placed close to the supply pins, with care taken to maintain stability in capacitive-feedback networks. This product record combines package, electrical, environmental, and automotive attributes with verified substitute references, application guidance, and a parameter-by-parameter comparison. It is intended to accelerate component selection and PCB planning for engineers evaluating a genuine 14-SOIC quad operational amplifier.

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LM2902QDRQ1

LM2902QDRQ1 - 26V Automotive Quad Op Amp | Texas Instruments

Texas Instruments LM2902QDRQ1 is an automotive-grade, quad operational amplifier rated for a 26 V maximum supply voltage, 1.2 MHz gain-bandwidth product, and 2 mV input offset voltage. The four amplifiers are independent, and the device is packaged in a 14-pin SOIC (D) package for operation from -40°C to 125°C. Its 60 mA output-current capability per channel supports a broad range of industrial and automotive signal-conditioning circuits. An operational amplifier is a high-gain, frequency-compensated analog IC that amplifies the difference between two input voltages. Quad operational amplifiers combine four amplifiers in one package, providing a compact solution for multiple signal channels. Within the broader semiconductor hierarchy, the LM2902-Q1 is a linear integrated circuit and operational amplifier intended for precision control, measurement, buffering, and general-purpose analog signal processing. Key characteristics include four independent amplifier sections, a 26 V maximum supply span, 1.2 MHz gain-bandwidth product, and 2 mV input offset voltage. The wide supply range allows operation from single or split supplies when the total voltage across the amplifier complies with device limits. The automotive-qualified Q1 grade extends the operating-temperature range to -40°C through 125°C for use in demanding vehicle and industrial environments. The internally frequency-compensated architecture simplifies implementation because external compensation components are not required for typical closed-loop gains. Each amplifier can independently handle input, output, and feedback connections, allowing one package to serve several channels of a control or measurement system. Designers should still account for input common-mode range, output swing, noise, stability, and the input bias-current error when selecting feedback and source impedances. Typical uses include 12 V and 24 V automotive sensor interfaces, actuator-driver signal conditioning, transducer amplification, current sensing, voltage comparison, and industrial control modules. The 60 mA output capability is useful for driving moderate loads, while the 1.2 MHz bandwidth is appropriate for low- and intermediate-frequency analog signals rather than high-speed waveform or video applications. The principal design consideration is the 26 V maximum supply rating. Board designers should leave transient margin for automotive and industrial supply variation, route sensitive input signals away from switching nodes, and verify that connected sensors or feedback networks do not exceed the input and output limits. Decoupling capacitors should be placed close to the supply pins, and unused amplifier sections should be configured according to the manufacturer datasheet. This page combines the LM2902-Q1 product specifications, package information, candidate drop-in references, application guidance, and design considerations. It supports faster part selection while directing engineers to the manufacturer product page and datasheet for final qualification, pin assignment, and lifecycle decisions.

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LM2902QS14-13

LM2902QS14-13 - 36V Quad Op Amp | Diodes Incorporated

The Diodes Incorporated LM2902QS14-13 is a four-channel general-purpose operational amplifier in a 14-pin SOIC package, operating from a single 3 V to 36 V supply. It supports input and output voltages close to the supply rails, provides 20 nA typical input bias current, 700 uA typical quiescent current, and 100 dB open-loop gain. The LM2902QS14-13 is the automotive-compliant version of the classic LM2902 quad operational amplifier family. An operational amplifier, or op amp, is a high-gain analog signal-conditioning semiconductor commonly used in amplifier, comparator, filtering, summing, and feedback-control circuits. The LM2902 architecture combines four independent amplifiers with common positive and negative power pins. Its wide supply-voltage range places it within the voltage-amplifier and analog-signal-processing hierarchy, where it bridges low-level sensor signals and higher-level control or measurement systems. The principal advantages include four amplifiers in one 14-pin package, low 700 uA quiescent current, 20 nA typical input bias current, and 100 dB typical open-loop gain. The 36 V maximum supply rating supports automotive and industrial systems operating above conventional low-voltage logic levels. Input common-mode range and output swing are important because they determine how close the amplifier can operate to its positive or negative supply rail. Consult the manufacturer pin description and electrical characteristics before selecting external bias networks or designing for rail-to-rail behavior. The LM2902 uses a classic general-purpose four-amplifier architecture rather than rail-to-rail input or output stages. Consequently, common-mode and output-voltage limits depend on the selected supply voltage and load. Stable operation in unity-gain configurations should be confirmed against the manufacturer stability and load-capacitance guidance. Decoupling capacitors should be placed close to the supply pins to control supply impedance and maintain predictable transient behavior. Typical uses include automotive sensor interfaces, industrial control modules, battery-powered instrumentation, transducer amplifiers, and low-frequency active filters. The quad configuration reduces board area when four independent analog channels are required, while the high-voltage capability supports systems with a 24 V or 36 V supply architecture. The device can also implement comparators when its output behavior and saturation recovery are acceptable for the intended switching application. For each amplifier, preserve input common-mode operation within the datasheet limits and account for output loading, input bias-current error, and noise bandwidth. Place bypass capacitors close to pins 4 and 11, maintain short feedback paths, and avoid long parallel traces that can increase coupling between channels. Verify motor-generated electrical noise, supply transients, and ground offsets before using the amplifier directly with automotive sensors. This product page combines exact ordering information, electrical limitations, pin assignments, application guidance, and like-for-like alternatives. It also distinguishes the automotive LM2902QS14-13 from lower-voltage, different-package, or non-automotive alternatives, helping engineers determine whether a replacement preserves both the SOIC-14 footprint and the required electrical behavior.

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LM2902S14-13

LM2902S14-13 - Quad General-Purpose Op Amp | Diodes

Diodes Incorporated LM2902S14-13 is a four-circuit, general-purpose operational amplifier in a 14-pin SOIC package. The device combines four amplifiers on one package, providing a practical solution for analog signal conditioning, feedback control, sensing, and interface circuits. Its package supports conventional surface-mount assembly while keeping the quad-amplifier architecture appropriate for moderate-cost, high-volume equipment. An operational amplifier is a voltage-gain device used to amplify differences between two input signals. The quad operational-amplifier category groups four amplifiers into one device, placing it within the broader hierarchy of analog amplifiers, signal-conditioning ICs, and semiconductor components. The LM2902 family is commonly used where multiple independent amplifier channels are required in one compact circuit footprint. The LM2902S14-13 is identified as a standard general-purpose amplifier with four circuits in a 14-SO package. It is suitable for applications such as sensor conditioning, active filtering, audio preamplification, loop-control circuits, and general voltage amplification. The 14-SO package is useful where designers want more integration than discrete single amplifiers while retaining a widely used surface-mount format. Its quad construction can reduce board area by consolidating four amplifier channels into one package. Each channel requires its own external feedback and compensation components determined by the circuit topology. Because the four channels share a package, designers should place input, output, power, and decoupling connections carefully to minimize coupling between high-impedance nodes and noisy output paths. Typical uses include conditioning sensor outputs in industrial equipment, buffering inputs to analog-to-digital converters, implementing active filters in audio and communications equipment, and closing control loops in power or measurement systems. The amplifier architecture is also appropriate for general-purpose educational and prototype boards requiring multiple independently configured channels. The primary design consideration is stable feedback. Each amplifier stage should use negative feedback and include compensation appropriate to the required gain and bandwidth. Input common-mode range, supply voltage, output swing, input offset voltage, and slew rate must be checked against the manufacturer datasheet before use, especially when operating near supply rails or driving capacitive loads. This page organizes the essential LM2902S14-13 package, application, and substitution information into an engineering-focused format. It also provides practical guidance for PCB layout, feedback design, decoupling, and part selection so that designers can assess the quad amplifier for new analog signal-chain designs.

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LM2902T14-13

LM2902T14-13 - Quad 1.3MHz Op Amp, 14-TSSOP | Diodes Inc.

The Diodes Incorporated LM2902T14-13 is a low-power, general-purpose quad operational amplifier with four amplifier circuits, a 1.3 MHz gain-bandwidth product, 100 dB open-loop gain, and 375 uA typical supply current, housed in a 14-pin TSSOP package. It provides four amplifiers in one package for applications requiring several independent analog signal-conditioning channels. An operational amplifier, or op amp, is a high-gain analog building block used to amplify, buffer, compare, filter, and shape voltage signals. The quad configuration places four amplifiers in one package, reducing board area compared with four separate single or dual amplifier packages. The LM2902 family is therefore useful where designers need multiple general-purpose analog channels with consistent operation in a compact surface-mount footprint. The principal performance characteristics are a 1.3 MHz gain-bandwidth product, 100 dB open-loop gain, and 375 uA supply current. The 14-TSSOP package has a stated width of 4.40 mm and is suitable for compact, surface-mounted PCB designs. Its four-channel architecture is particularly useful for sensor conditioning, multi-axis signal processing, analog measurement systems, and general buffer or amplifier networks. The LM2902T14-13 operates as a voltage-feedback amplifier, allowing feedback networks to establish gain, filtering, and signal-shaping behavior. The 1.3 MHz gain-bandwidth product supports moderate-bandwidth closed-loop operations rather than high-speed signal chains. Its 100 dB open-loop gain provides high loop gain, while the low 375 uA supply current suits battery-operated and low-power equipment when system-level power consumption is a priority. Typical uses include four-channel sensor interfaces, low-frequency active filters, differential signal conditioning, transducers requiring multiple buffers, instrumentation amplifiers using several amplifier stages, and general-purpose analog control boards. The quad organization also reduces component count and simplifies PCB routing when several independent amplifier functions are required. A critical design consideration is maintaining adequate output swing and common-mode range for the signal being amplified. Feedback components should be selected to keep closed-loop bandwidth, offset error, and output loading within acceptable limits. Decoupling capacitors must be placed close to the supply pins to reduce supply-noise coupling into the amplifier. This product page organizes the LM2902T14-13 technical characteristics, package information, application guidance, and verified source links into a practical engineering reference for general-purpose analog design.

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LM2902VDR2

LM2902VDR2 - Quad 26V Op Amp in SOIC-14 | onsemi

The onsemi LM2902VDR2 is a single-supply, general-purpose quad operational amplifier packaged in a 14-pin SOIC. It provides four amplifier channels, a 3 V to 26 V listed operating range, approximately 1.2 MHz gain-bandwidth performance, and approximately 2 mV input offset voltage. The LM2902VDR2 is suited to industrial, instrumentation, buffering, signal-conditioning, and control applications where one IC can implement four similar amplifier functions. An operational amplifier is a high-gain, differential-input amplifier whose external feedback network determines the closed-loop gain and signal behavior. The quad LM2902 family places four amplifiers in one package, reducing component count and simplifying layouts requiring several low-cost, general-purpose amplification channels. It is a voltage-feedback amplifier intended for tasks such as signal amplification, impedance buffering, active filtering, differential sensing, and basic analog control. Key characteristics include four amplifiers in one package, a 3 V to 26 V supply range, approximately 1.2 MHz gain-bandwidth product, and approximately 2 mV input offset voltage. The 14-pin SOIC format supports conventional surface-mount assembly and provides a practical option for through-hole-compatible board layouts. Because the device is a general-purpose amplifier rather than a precision or high-speed part, its performance should be evaluated against noise, offset, slew rate, output-current capability, input-bias current, and stability requirements in the target circuit. The four internal channels share common supply pins but otherwise provide independent amplifier inputs and outputs. This makes the LM2902VDR2 especially useful where several channels perform related low-frequency tasks, such as sensing and actuator conditioning, instrumentation buffering, or active-filter stages. Designers should avoid assuming that all analog functions can safely drive heavy loads, particularly when operating near the supply rails. For stable operation, follow the manufacturer datasheet for input and output voltage limits, common-mode behavior, output swing, load capability, compensation requirements, and bypass-capacitor recommendations. Power-supply bypassing should be placed close to the supply pins, while input and feedback components should be positioned to minimize parasitic coupling and preserve the intended gain bandwidth. Typical uses include industrial sensor interfaces, audio and communications signal conditioning, active filters, data-acquisition front ends, and embedded control systems. This page organizes the LM2902VDR2 specifications, verified source links, package information, practical design guidance, and verified drop-in alternatives into one engineering-oriented resource for component selection and PCB planning.

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LM2902VDR2G

LM2902VDR2G - 32V Quad Op Amp | onsemi | Industrial Control

The onsemi LM2902VDR2G is a single-supply, general-purpose quad operational amplifier providing four independent amplifier channels in a 14-pin SOIC package. It operates from 3 V to 32 V, offers a typical slew rate of 0.6 V/us, and is designed for low-cost signal conditioning across industrial, instrumentation, sensor, and control systems. The LM2902VDR2G is the extended-temperature version of the industry-standard LM2902 family. An operational amplifier is an active semiconductor device that uses high-gain differential feedback to amplify the difference between two input voltages. Within the broader hierarchy, the LM2902VDR2G is a quad operational amplifier, which combines four voltage-feedback amplifier channels in one integrated circuit. This integration reduces board area and component count when a design requires multiple analog signal paths. The principal features include four amplifier channels, single-supply operation from 3 V to 32 V, a typical slew rate of 0.6 V/us, true differential inputs, and an extended-temperature version intended for reliable operation beyond the normal commercial temperature range. The device is suited to sensors, transducers, low-level signal conditioning, feedback networks, analog control loops, and general-purpose analog signal processing. Its architecture allows each amplifier to be configured as an inverting amplifier, non-inverting amplifier, voltage follower, comparator, or differential stage when the required stability and common-mode conditions are respected. Because all four channels share one package, decoupling requirements apply primarily to the common power pins. This makes the LM2902VDR2G useful where four related analog channels must operate within one temperature and supply environment. Typical applications include industrial sensor interfaces, current-loop receivers, data-acquisition modules, transducer amplifiers, audio preamplifier stages, low-power control systems, and embedded instrumentation. The 14-SOIC outline also simplifies assembly and replacement in designs that historically used the LM2902 family. Verify each channel's input and output swing before driving large signals near the supply rails. The primary design consideration is ensuring that signal levels, source impedances, feedback values, and load impedances remain within the operating limits of the device. Place the power-bypass capacitor close to the supply pins, maintain a common ground reference between amplifier inputs and feedback networks, and avoid excessive source resistance where it would degrade input bias-current error or noise performance. This page organizes the LM2902VDR2G specifications, verified manufacturer and distributor references, pin assignment, same-footprint alternatives, comparison parameters, and practical engineering guidance. It also identifies where temperature grade, channel performance, qualification, and package details require confirmation against the manufacturer datasheet before a substitution is approved.

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LM2903AS-13

LM2903AS-13 - Dual 36V Comparator | Diodes Incorporated

Diodes Incorporated LM2903AS-13 is a dual differential voltage comparator rated for operation up to 36 V, with a typical input bias current of 25 nA and output current capability of 20 mA. The device is packaged in an 8-pin SOIC and provides two independent comparator channels for general-purpose signal conditioning, threshold detection, and industrial control applications. A voltage comparator is an analog integrated circuit that compares two input voltages and changes its output state when the non-inverting input exceeds the inverting input. The LM2903 belongs to the comparator hierarchy, where a comparator is an interface IC used to translate small analog voltage differences into digital logic levels. Its two channels can compare independent sensor, reference, or feedback signals while sharing a common supply and ground. The principal electrical features include two independent channels, a 36 V maximum supply-voltage class, low 25 nA typical input bias current, and open-collector outputs capable of sinking 20 mA. The low input bias current reduces disturbance in high-impedance sensing circuits. The open-drain outputs also permit wired-AND behavior when multiple comparator outputs share a pull-up resistor, provided the design respects the voltage and current limits of each device. The LM2903 can operate from a single supply or from split positive and negative supplies, making it adaptable to legacy industrial and automotive-style signal chains. Because the comparators are independent, one channel can monitor an upper threshold while the other detects a lower threshold. Output-referenced behavior and input common-mode limits must still be checked against the application supply arrangement before the circuit is released. Typical uses include sensor threshold modules, overvoltage and undervoltage detection, window comparators, relay-driver interfaces, industrial control logic, and waveform crossing detection. The low input bias current is particularly useful when the input source has a high equivalent resistance or when the comparator must avoid loading a sensor output. A suitable pull-up resistor is required for each open-collector output when the output must drive a high logic state. The main design consideration is the relationship between supply voltage, input common-mode range, and output pull-up voltage. Keep the pull-up resistor high enough to limit channel current but low enough to achieve the required rise time. Check that the pull-up voltage remains within the output transistor rating and that parasitic PCB capacitance does not slow switching. The 8-pin SOIC footprint also requires adequate copper area and thermal clearance when operating at elevated ambient temperatures. This page combines device specifications, pin-level guidance, application-oriented design notes, and clearly qualified drop-in comparisons. It is intended to help engineers evaluate the LM2903AS-13 for PCB reuse, comparator selection, supply compatibility, and threshold-circuit implementation without replacing the need to review the manufacturer datasheet during sign-off.

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LM2903AVQDRG4Q1

LM2903AVQDRG4Q1 - 36V AEC-Q100 Dual Open-Collector Comparator | Texas Instruments

The Texas Instruments LM2903AVQDRG4Q1 is an AEC-Q100 Grade 0 and 1 automotive dual differential comparator with two independent, open-collector output channels, supplied from a single 2 V to 36 V rail or from dual ±1 V to ±18 V supplies, and housed in an 8-pin SOIC (D) package rated for -40 °C to +125 °C. A comparator is a differential amplifier whose output changes state when one input exceeds the other by more than a defined offset. It converts an analog voltage relationship into a digital logic level, which places it in the hierarchy of analog signal conditioning > comparator > differential amplifier > analog IC. Because both channels are fully independent, one package provides two separate threshold decisions, which halves board area compared with two single comparators. Key features of the LM2903-Q1 device family include a 36 V maximum single-supply rating, open-collector outputs that can sink up to tens of milliamperes into a pull-up network, very low supply-current drain of roughly 0.4 mA per channel that is largely independent of supply voltage, and input common-mode range that extends close to both supply rails. The automotive-qualified grade adds AEC-Q100 Grade 0 and 1 qualification, supporting ambient temperatures from -40 °C to +125 °C, and the device is rated for the electrostatic and transient conditions typical of 12 V and 24 V vehicle electrical systems. Each of the two channels presents a non-inverting and an inverting input, a common supply ground, and a separate open-collector output. Because the output stage is open collector rather than push-pull, the output polarity is set by the position of the external pull-up resistor, and the output can be wired-ORed with other open-collector devices such as system alarm lines, sensor buses, or fault indicators. This is a deliberate design choice in automotive systems where a single fault line must be shared and the output must be pulled low in the fail-safe direction. Typical applications include 12 V and 24 V battery rail overvoltage and undervoltage supervision, window regulator and body electronics threshold detection, ABS wheel-speed sensor conditioning, motor and solenoid current-limit protection, industrial PLC level and limit switching, and DC power-supply UVLO and OVLO window comparators. Each of these applications depends on the wide 36 V supply headroom, the low quiescent current, and the ability to sink a logic-level pull-up current directly. A key design consideration is that open-collector outputs require an external pull-up resistor, typically 10 kΩ to 100 kΩ, and that the output leakage current in the high state limits the maximum usable pull-up resistance. Placing the pull-up close to the output reduces susceptibility to noise pickup on the shared fault line. Automotive designs should also keep the comparator input traces short and away from switching nodes, because the high-impedance differential inputs are the most sensitive part of the signal chain and are the dominant source of false threshold transitions. This page combines the LM2903-Q1 technical specifications, an AEC-Q100-aware pin and package breakdown, and a drop-in alternative table that compares automotive-qualified and commercial catalog alternatives in the same 8-SOIC footprint, so engineers can identify a pin-compatible replacement without re-laying out the board.

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LM2903AVQPWR

LM2903AVQPWR - Dual Differential Comparator | Texas Instruments

Texas Instruments LM2903AVQPWR is a dual differential comparator designed for single-supply or dual-supply operation, with two independent open-collector output stages in an 8-pin TSSOP package. The device is specified for enhanced voltage operation, a wide supply-voltage range, and a typical supply-current drain of 0.4 mA per comparator. Its differential inputs allow each comparator to compare an inverting input against a non-inverting input and generate a logic-level indication of the comparison result. A comparator is an analog semiconductor that evaluates two input voltages and produces a digital output indicating which input is higher. The LM2903 belongs to the voltage-comparator hierarchy, where it functions as a general-purpose interface between analog sensing circuits and digital logic. It is commonly used to monitor supply rails, detect threshold crossings, translate sensor signals, protect equipment, and support simple control loops. The open-collector outputs require an external pull-up resistor when the output must drive a logic node. The LM2903AVQPWR includes two independent comparator channels, allowing separate comparisons within one package. The enhanced-voltage LM2903V family is identified in the manufacturer product information as supporting a wide range of supply voltages. The typical supply-current drain is listed as 0.4 mA per comparator, making the device suitable for low-power monitoring and embedded control systems where supply efficiency matters. The device uses an 8-pin TSSOP package designated PW by Texas Instruments. The product information identifies the operating-temperature range as -40°C to 125°C for LM2903AVQPWR. The package is suitable for compact surface-mount PCB layouts, while the open-collector outputs provide flexible interface options to TTL, CMOS, open-drain buses, relay drivers, and other systems. The two channels share the supply pins but retain independent input and output functions. Typical applications include automotive and industrial voltage supervision, battery monitoring, overvoltage and undervoltage detection, signal conditioning, window comparison, sensor thresholding, and logic-level translation. The -40°C to 125°C temperature range supports applications across industrial and automotive environments, subject to the device-specific operating and absolute-maximum ratings in the manufacturer datasheet. Designers should account for the open-collector output when selecting the external pull-up resistor. The resistor value determines output rise time, while the transistor's sink-current capability limits the permissible load. Input common-mode range, output saturation level, response time, supply-voltage limits, and input offset should be checked against the specific application before finalizing the design. This product overview combines the LM2903AVQPWR identity, TSSOP package information, comparator function, application guidance, and same-footprint replacement context to support faster engineering review and sourcing decisions.

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LM2903AVQPWRQ1

LM2903AVQPWRQ1 - Dual 36 V Automotive Comparator | TI

Texas Instruments LM2903AVQPWRQ1 is an AEC-Q100 Grade 0 and 1 automotive dual differential comparator with a 2 V to 36 V single-supply range, open-collector outputs, and an 8-pin TSSOP (PW) package. It provides two independent comparison channels, a typical response time of 1.3 us, and rail-to-rail input operation for flexible signal-threshold detection. A comparator is a high-gain analog circuit that determines whether one input voltage is above or below another input voltage. Its output changes state when the differential input crosses the selected threshold. The dual differential comparator category extends this function to two independent channels, making it useful for battery monitoring, sensing, window detection, and control loops. In the hierarchy of semiconductor components, a comparator belongs to the broader analog and interface IC family. The LM2903AVQPWRQ1 combines a wide operating supply range with low supply-current operation. Manufacturer product information identifies the device as an automotive high-voltage dual comparator qualified for AEC-Q100 Grade 0 and 1. Each channel uses an open-collector output, allowing multiple comparators to share a pull-up network for wired-AND signaling. The typical propagation delay is 1.3 us, while the operating temperature range extends from -40 C to +125 C. Each comparator channel includes a non-inverting input, an inverting input, and an open-collector output. The eight-pin TSSOP package keeps the two channels separate while supporting compact PCB placement. Because open-collector outputs require an external pull-up resistor, the output voltage is set by the pull-up supply and resistor rather than by a push-pull output stage. The dual architecture also allows one device to monitor two independent threshold conditions. Typical uses include automotive battery and power-rail monitoring, industrial threshold detection, sensor conditioning, overvoltage and undervoltage protection, and automotive control modules. The 2 V to 36 V operating range is particularly useful when a circuit operates from an automotive battery-derived supply. The 1.3 us response time supports comparisons where the threshold result must be captured quickly, although propagation delay and input overdrive should be checked against the system timing budget. When designing a PCB for LM2903AVQPWRQ1, place the device near the sensed signals and keep input traces short to reduce noise pickup. Route each open-collector output with an appropriate pull-up resistor, verify absolute-maximum input and supply voltages, and account for input bias current when choosing high-impedance divider networks. The automotive-qualified grade and -40 C to +125 C rating support harsh-temperature systems, provided the surrounding power distribution and protection components are appropriately rated. This product page consolidates the exact ordering information, package details, technical specifications, drop-in alternatives, and application-specific design guidance for engineers evaluating the LM2903AVQPWRQ1. It also distinguishes true same-package drop-in choices from related comparators that require a different footprint.

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LM2903BIDR

LM2903BIDR - Dual 36V Open-Collector Comparator | Texas Instruments

The Texas Instruments LM2903BIDR is a dual industrial-grade differential comparator with two independent channels, a maximum supply rating of 36 V, open-collector outputs, and a 1 µs response time. It is supplied in an 8-pin SOIC (D) package and is specified for operation from -40 °C to +125 °C. The B-version family also provides a low 0.37 mV input offset, 3.5 nA input bias current, and 200 µA supply current per comparator. A comparator is an analog integrated circuit that determines whether one input voltage is above or below another and switches its output when the differential input crosses a threshold. In the broader semiconductor hierarchy, a comparator belongs to the amplifier and comparator IC family rather than an operational amplifier. Open-collector outputs are useful when multiple devices must share a wired bus or when an external pull-up resistor selects the logic voltage independently of the comparator supply. The LM2903BIDR supports single- or dual-supply operation, allowing its input and output signals to be referenced around ground in control, sensing, and protection circuits. Its industrial temperature range makes it suitable for equipment operating beyond consumer-temperature limits. The two channels are independent, so one device can perform two threshold functions while sharing a package, although output pull-up components and supply decoupling remain external. Verified distributor and manufacturer results identify the device as a standard, general-purpose, rail-to-rail-input comparator with open-collector outputs and an 8-SOIC footprint. Texas Instruments describes the B-version as a next-generation member of the LM393 and LM2903 families, emphasizing lower offset, lower bias current, lower supply current, faster response, wider supply capability, and improved ESD robustness. Typical applications include DC overvoltage monitoring, industrial sensor thresholds, battery-powered indication, window comparators, and relay or alarm activation. Because an open-collector output does not actively drive a high voltage, every application must provide a suitable pull-up resistor and account for its sink-current limit. The collector voltage and supply limits should be checked against the manufacturer datasheet before designing to absolute maximum conditions. For PCB design, place input resistors close to the relevant pins, decouple the supply close to the device, and route high-impedance input traces away from switching nodes. Where open-collector outputs drive cables or long PCB traces, use a strong pull-up and consider a buffer if additional noise immunity or edge control is required. This page combines verified manufacturer and distributor details with engineering guidance for selecting, sourcing, and replacing the component.

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LM2903D

LM2903D - Dual Open-Collector Comparator | Texas Instruments

The Texas Instruments LM2903D is a dual differential analog comparator with two independent comparator channels, an operating supply range of 2 V to 36 V, a response time of 300 ns, and an 8-pin SOIC package. Each channel provides open-collector output behavior for level translation, relay driving, and wired-AND logic functions. The device is specified for operation from -40 °C to +125 °C according to the available manufacturer comparison data. An analog comparator is an integrated circuit that compares two input voltages and produces a logic-level output indicating which input is higher. The LM2903D belongs to the comparator hierarchy within analog and mixed-signal semiconductors, providing a simple alternative to an operational amplifier configured as a comparator. Its two channels operate independently, allowing one package to implement two threshold decisions or to control complementary functions in a single circuit. The open-collector outputs are a defining electrical feature. Each output transistor can pull its output low, but it cannot actively drive the output high, so an external pull-up resistor is required. Multiple open-collector outputs can share one pull-up to create a wired-AND arrangement. This architecture also provides a useful form of output isolation while remaining compatible with standard 5 V and 3.3 V digital logic levels when the pull-up rail is selected appropriately. The 2 V to 36 V supply capability allows operation from low-voltage analog systems through conventional industrial control rails. Its 300 ns response time supports applications where decisions must be made faster than typical slow comparators but where nanosecond-level precision is unnecessary. The operating temperature range covers industrial environments, although production designs should still verify temperature-dependent input offset, output-current, and propagation-delay behavior using the selected manufacturer's complete datasheet. Typical uses include industrial sensor conditioning, battery monitoring, overvoltage detection, window or level comparators, relay and solenoid interfaces, and digital control systems that require open-collector outputs. The SOIC-8 package is also appropriate for through-hole-style PCB assembly and manual rework, although SOIC-8 is larger than modern comparator packages such as SOT-23 and MSOP-8 variants. When designing with the LM2903D, always place the input and pull-up networks close to their associated pins, and account for input common-mode limits at the selected supply voltage. A pull-up resistor is not optional because the open-collector output cannot source current. Reviewing the voltage drop across the pull-up and the output transistor's current rating is essential when several outputs share the same node. This page consolidates verified distributor listings, manufacturer references, pin-compatible alternatives, package details, and practical circuit guidance. It also distinguishes directly interchangeable devices from higher-speed or higher-precision alternatives whose electrical behavior may require different design assumptions.

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LM2903DE4

LM2903DE4 - Dual 36V Open-Collector Comparator | Texas Instruments

Texas Instruments LM2903DE4 is a dual differential comparator built for general-purpose signal conditioning and threshold detection. The device contains two independent comparators, supports a 2 V to 36 V single-supply operating range, and provides open-collector outputs in an 8-pin SOIC package. Its 300 ns response time makes it suitable for systems that require faster decisions than the related LM393B family while retaining the familiar open-collector interface. A comparator is an analog integrated circuit that compares two input voltages and produces a digital logic state indicating which input is higher. Within the broader hierarchy of interface ICs, comparators extend analog signal conditioning into threshold control, protection, sensing, and discrete logic activation. The LM2903DE4 is specifically a dual differential comparator: each half can independently compare an inverting input with a non-inverting input while sharing common supply and ground connections. The principal features include two independent channels, a 2 V to 36 V supply range, an approximately 300 ns response time, and open-collector outputs compatible with TTL, MOS, and CMOS circuits. The common-mode input range includes ground, and the differential input range is equal to the maximum-rated supply voltage of ±38 V for the family. Each output can sink external current while remaining in a high-impedance state when inactive, requiring an external pull-up resistor for normal logic-high operation. Differential comparison is especially useful when a sensor or signal source is referenced to another voltage rather than to ground. By placing the threshold on the non-inverting input and the sensed signal on the inverting input, the comparator can provide overvoltage, undervoltage, temperature, current, or level detection. Because the channels are independent, the same package can implement two thresholds, compare two unrelated signals, or combine two decisions locally. Typical applications include industrial sensor interfaces, overvoltage and reverse-polarity protection, window comparators, motor and relay control, power-supply supervision, and embedded control systems. The open-collector outputs are particularly useful for wired-AND arrangements, relay-driver interfaces, and level translation because the output stage can remain disconnected while an external pull-up establishes the logic-high voltage. The principal design consideration is the open-collector output. Place each pull-up resistor close to the relevant output and select it to balance rise time against sink-current demand. Also check input common-mode limits, supply operating range, output leakage, and the timing relationship between the reference voltage and sensed signal before using the comparator for high-speed pulse detection. This page consolidates the manufacturer specifications, package and pin information, orderable alternatives, comparison data, and practical application guidance into a design-focused reference for engineers evaluating the LM2903DE4.

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LM2903DG4

LM2903DG4 - Dual Open-Collector Comparator | Texas Instruments

The Texas Instruments LM2903DG4 is a dual differential comparator containing two independent comparator channels, an open-collector output configuration, and an 8-pin SOIC package. The device supports single-supply or dual-supply operation, with a maximum-rated supply voltage of 32 V and a tested differential input voltage of 30 V. Its low supply-current drain of 0.4 mA typical per comparator is independent of supply voltage, making it suitable for power-conscious industrial and embedded systems. A comparator is an analog integrated circuit that evaluates two input voltages and produces a digital logic state indicating which input is higher. The LM2903 is a dual differential comparator, placing two independent comparator channels in one package. Within the broader semiconductor hierarchy, it is a comparator, analog IC, and interface/amplifier-class signal-conditioning component used to translate small analog voltage relationships into logic-compatible decisions. Each LM2903 channel supports operation from a single supply or from dual supplies. The open-collector outputs can sink output current while presenting a high-impedance state when the output is inactive. According to the Texas Instruments LM2903 product information, the outputs are compatible with TTL, MOS, and CMOS logic. This makes the device useful when an external pull-up resistor is required to establish the inactive output voltage. The two channels are electrically independent, allowing one comparator to monitor a control threshold while the other handles a second signal, alarm, or protection event. Common-mode input voltage range includes ground, and the differential input rating equals the maximum-rated supply voltage. These characteristics support sensing arrangements in which signals may approach the lower supply rail, subject to the limits stated in the manufacturer datasheet. Typical applications include overvoltage and undervoltage detection, industrial sensor interfaces, battery monitoring, window or threshold detection, relay-control logic, and general-purpose signal conditioning. The wide supply range also makes the device useful in 5 V, 12 V, and 24 V industrial systems when the relevant operating limits are observed. Designers should account for open-collector pull-up requirements, input common-mode limits, output sink-current capability, and unused-channel handling. A pull-up resistor must be selected to establish a valid logic-high voltage without exceeding the device's output-current limits. Input filtering may also be required when noisy signals could cause repeated transitions near the comparison threshold. This page combines manufacturer identification, package details, cross-reference information, and engineering guidance for threshold detection and open-collector interface design. It also highlights the operating conditions that should be checked before using a substitute or family variant on an existing board.

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LM2903DGKRG4

LM2903DGKRG4 - 36V Dual Comparator | Texas Instruments

Texas Instruments LM2903DGKRG4 is a dual differential comparator containing two independent voltage comparators, with a 2 V to 36 V supply range, approximately 300 ns response time, and an 8-pin VSSOP package. Both channels use open-collector outputs, allowing wired logic or use with an external pull-up resistor. The part supports single-supply operation and dual-supply operation when the total supply span is 2 V to 36 V. A voltage comparator is an analog interface that compares two input voltages and produces a logic-level indication of their relationship. The LM2903 belongs to the comparator hierarchy, where a comparator is an analog IC used for threshold detection, signal conditioning, and protection. Its two independent channels can monitor separate control, sensing, or feedback signals, while its open-collector architecture provides flexible interface voltage selection. The principal operating characteristics include a 2 V to 36 V supply range, approximately 300 ns propagation delay, and low supply-current drain of 0.4 mA typical per comparator. Its rail-to-rail input capability allows the input common-mode range to extend toward the supply rails. Open-collector outputs can sink output current while leaving the effective pull-up voltage under the system designer’s control, making the device useful in wired-AND, wired-OR, and level-shifting arrangements. Each channel has one inverting input, one non-inverting input, one output, and access to the supply and ground rails. Because the two comparators are independent, each channel can be configured for a different threshold or polarity. Input offset, input bias current, output saturation characteristics, and detailed common-mode behavior should be checked against the manufacturer datasheet for each operating condition, particularly when sensing near a supply rail. Typical uses include industrial control systems, battery-powered equipment, power-supply sequencing, overvoltage and undervoltage monitoring, sensor-threshold conditioning, and general-purpose logic interfaces. The wide supply range accommodates multiple industrial and automotive-style voltage environments, while the low typical supply-current drain is advantageous in portable systems. An open-collector output also allows multiple comparators to share a pull-up node when wired logic is required. The primary design consideration is the open-collector output. Every output requires a suitable pull-up resistor and account for sink-current limits, rise time, bus capacitance, and the logic threshold of the receiving device. Input filtering may also be necessary when noisy analog signals are compared, while board placement should keep comparison inputs away from switching nodes and high-current return paths. This page combines the exact ordering designation with package, pin, application, and drop-in replacement guidance to support schematic review and PCB reuse. It also provides practical design notes for pull-up selection, input conditioning, and open-collector interfacing, helping engineers evaluate the LM2903 family beyond a basic datasheet parameter summary.

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LM2903DMR2

LM2903DMR2 - Dual Precision Comparator, 36 V | onsemi

onsemi LM2903DMR2 is a dual independent precision voltage comparator designed for single-supply or split-supply operation, with a supply range extending to 36 V and an 8-pin SOIC package. The device compares two input voltages per channel and provides an open-collector output suitable for wired logic-level comparison and system monitoring. A voltage comparator is an analog integrated circuit that evaluates two input voltages and changes its output state according to their relationship. The LM2903 belongs to the comparator hierarchy within analog signal-processing and interface ICs. Its two independent channels allow a single package to monitor two unrelated signals, while single- or split-supply operation makes it useful across industrial, automotive, and embedded power-control systems. The LM2903 series provides a common-mode input range that extends to ground under single-supply operation. This characteristic is important when a monitored signal can approach 0 V. The low-offset-voltage designation indicates that the comparators are intended to detect relatively small differential voltages, although the exact offset limits depend on the operating conditions specified in the onsemi datasheet. Each channel operates independently, allowing different threshold networks and signal pairs to share the package. The device supports supply voltages up to 36 V, which provides headroom for industrial and automotive environments. Its comparator outputs are designed for interfacing with conventional logic, although output topology, sink-current limits, and pull-up requirements must be confirmed from the manufacturer datasheet before final circuit design. Typical uses include power-supply sequencing, battery and charger threshold detection, overvoltage and undervoltage protection, window monitoring, sensor-level detection, and general signal conditioning. In a power system, the two channels can monitor independent rails or compare a feedback voltage against a reference. The open-collector-style interface also allows multiple devices to share a pull-up arrangement when the required bus architecture and current limits are appropriate. When laying out the circuit, keep comparator input nodes short and shield them from switching nodes and high-current paths. Confirm whether the selected output configuration requires an external pull-up resistor, and use that resistor to satisfy the downstream logic's rise-time requirements. Check supply-decoupling placement at the device pins and verify input and output limits for the complete temperature range. This product record combines the LM2903DMR2 electrical description, verified source links, same-package alternatives, application guidance, and design checks to support faster component selection and PCB-level engineering decisions.

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LM2903DR

LM2903DR - Dual Open-Collector Comparator | Texas Instruments (Tape & Reel)

The Texas Instruments LM2903DR is a dual differential analog comparator with two independent comparator channels, an operating supply range of 2 V to 36 V, a response time of 300 ns, and an 8-pin SOIC package. Each channel provides open-collector output behavior for level translation, relay driving, and wired-AND logic functions. The device is specified for operation from -40 °C to +125 °C according to the available manufacturer comparison data. An analog comparator is an integrated circuit that compares two input voltages and produces a logic-level output indicating which input is higher. The LM2903DR belongs to the comparator hierarchy within analog and mixed-signal semiconductors, providing a simple alternative to an operational amplifier configured as a comparator. Its two channels operate independently, allowing one package to implement two threshold decisions or to control complementary functions in a single circuit. The open-collector outputs are a defining electrical feature. Each output transistor can pull its output low, but it cannot actively drive the output high, so an external pull-up resistor is required. Multiple open-collector outputs can share one pull-up to create a wired-AND arrangement. This architecture also provides a useful form of output isolation while remaining compatible with standard 5 V and 3.3 V digital logic levels when the pull-up rail is selected appropriately. The 2 V to 36 V supply capability allows operation from low-voltage analog systems through conventional industrial control rails. Its 300 ns response time supports applications where decisions must be made faster than typical slow comparators but where nanosecond-level precision is unnecessary. The operating temperature range covers industrial environments, although production designs should still verify temperature-dependent input offset, output-current, and propagation-delay behavior using the selected manufacturer's complete datasheet. Typical uses include industrial sensor conditioning, battery monitoring, overvoltage detection, window or level comparators, relay and solenoid interfaces, and digital control systems that require open-collector outputs. The SOIC-8 package is also appropriate for through-hole-style PCB assembly and manual rework, although SOIC-8 is larger than modern comparator packages such as SOT-23 and MSOP-8 variants. When designing with the LM2903DR, always place the input and pull-up networks close to their associated pins, and account for input common-mode limits at the selected supply voltage. A pull-up resistor is not optional because the open-collector output cannot source current. Reviewing the voltage drop across the pull-up and the output transistor's current rating is essential when several outputs share the same node. This page consolidates verified distributor listings, manufacturer references, pin-compatible alternatives, package details, and practical circuit guidance. It also distinguishes directly interchangeable devices from higher-speed or higher-precision alternatives whose electrical behavior may require different design assumptions.

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LM2903DR2

LM2903DR2 - Dual 36 V Comparator | onsemi | SOIC-8

onsemi LM2903DR2 is a dual differential voltage comparator designed for single-supply or split-supply operation between 2 V and 36 V. The device contains two independent comparison channels, supports a common-mode input range extending to ground in single-supply systems, and is packaged in an 8-pin SOIC. Its open-collector output architecture provides flexible interface options for wired logic, pull-up networks, relay drivers, and systems operating from multiple supply rails. A voltage comparator is an analog integrated circuit that compares two input voltages and produces a logic-level indication of their relationship. The LM2903 belongs to the comparator hierarchy within analog and mixed-signal semiconductors, where its primary role is threshold detection rather than linear amplification. Two independent channels allow one package to implement two unrelated sensing functions while sharing a common supply connection and ground reference. The LM2903 series combines low input-offset voltage, low input-bias current, and a wide supply-voltage range. Input offset voltage is specified as low as 2.0 mV, which helps define the input-voltage difference required to change output state. The 2 V to 36 V operating range supports legacy 5 V logic, industrial 12 V and 24 V rails, automotive-style 12 V systems, and higher-voltage threshold-detection circuits. The open-collector outputs permit an external pull-up voltage to be selected independently of the comparator supply. Each channel compares a non-inverting input with an inverting input. When the non-inverting voltage is higher, the corresponding open-collector output transistor turns on and pulls the output toward the pull-up rail; when the inverting voltage is higher, the transistor turns off and the output rises. The two channels are independent, although their supply and ground pins are shared. This arrangement supports sensor thresholding, window detection, and complementary decisions without requiring two separate packages. Typical uses include industrial control and factory automation, battery-powered monitoring, automotive battery and power-system detection, instrumentation, protection circuits, and embedded systems using 3.3 V or 5 V microcontroller interfaces. For digital interfaces, the open-collector output can use a pull-up to the logic rail used by a comparator input or microcontroller. The SOIC-8 package also supports conventional surface-mount assembly and hand-soldering workflows. Designers should verify the allowable input and output voltage relationships, including the differential input range, and use a pull-up resistor that supplies adequate output current without exceeding the output transistor's limits. Care is also needed when a channel drives a cable, relay, or large capacitance because slower edges and parasitic coupling can affect system behavior. The input network should include suitable filtering when the sensed signal contains switching noise. This product overview combines the exact LM2903DR2 ordering identity with practical guidance on comparator operation, pin usage, output interfacing, and verified drop-in options. It is intended to support component selection, PCB replacement, and design reviews involving dual open-collector comparators in SOIC-8 packages.

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LM2903DR2G

LM2903DR2G - Dual 36V Open-Collector Comparator | onsemi

onsemi LM2903DR2G is a dual differential voltage comparator with two independent comparator channels, 2 V to 36 V supply operation, open-collector outputs, 1.5 µs propagation delay, and an 8-pin SOIC package. The device also supports split-supply operation with stated rails from ±1 V to ±18 V and an input offset voltage as low as 2.0 mV. A dual comparator is a semiconductor that evaluates two input voltages and changes its output state according to their relationship. The LM2903 belongs to the broader voltage-comparator hierarchy within analog integrated circuits and power-management signal conditioning. Its two independent channels allow simultaneous or separate threshold, window, sensing, and level-detection functions without requiring two separate comparator packages. Key features include two open-collector channels, a 1.5 µs response time, and low-offset operation with input offset voltage specifications as low as 2.0 mV. The 2 V to 36 V total supply range supports industrial, automotive-style, and embedded applications where the comparator may operate from a single supply or from positive and negative rails. Open-collector outputs permit external pull-up selection and can interface with TTL, MOS, or CMOS-compatible systems when the pull-up voltage and current are appropriate. The comparator architecture is appropriate when a design needs a digital decision rather than a linear analog output. Each channel can compare a sensed voltage against a reference threshold, while the open-collector structure allows wired logic, alarm signaling, or direct control of a pull-up-equipped input. Operation from single or split supplies expands its usefulness in power systems that use both positive and negative reference rails. Typical applications include automotive battery and power-rail monitoring, industrial control thresholds, motor and actuator interfaces, sensor conditioning, overvoltage and undervoltage detection, and embedded system supervision. The 8-SOIC package provides a conventional surface-mount footprint, while the dual-channel configuration helps reduce component count in dual-threshold or multi-channel sensing designs. Designers should verify input common-mode limits, output pull-up values, differential input limits, and the exact electrical grade associated with the selected ordering code. Keep output pull-up paths short, provide adequate return-current routing, and account for the open-collector output’s tendency to sink current rather than source it. The Request a Quote form on this page supports current commercial sourcing questions. This page organizes the LM2903DR2G electrical characteristics, package information, drop-in candidates, comparison parameters, and practical circuit-placement guidance. It also identifies which ordering variants are technically suitable for footprint reuse and where direct replacement requires additional engineering review.

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LM2903DRE4

LM2903DRE4 - Dual 2-36V Comparator | Texas Instruments

Texas Instruments LM2903DRE4 is a dual differential voltage comparator with open-collector outputs, rail-to-rail input capability, a 2 V to 36 V supply range, and an 8-pin SOIC package. Each channel can operate independently, making the device suitable for threshold detection, level translation, window monitoring, and industrial control tasks. A voltage comparator is an analog semiconductor that compares two input voltages and changes its output state when one input crosses the other. A dual comparator contains two electrically independent comparator channels in one package. The LM2903 belongs to the voltage comparator hierarchy, where it can be described more specifically as a differential comparator with open-collector outputs. It operates from a single supply or from split supplies, making it suitable for industrial power systems with widely separated ground references. The principal advantages of the LM2903DRE4 are its broad 2 V to 36 V operating supply range, rail-to-rail input characteristic, low typical supply-current drain of 0.4 mA per comparator, and 300 ns response time. The two open-collector outputs allow the output state to be pulled up to an external voltage and provide wired-AND behavior when several comparators share a pull-up resistor. This output arrangement is useful when interfacing with open-drain logic, relay drivers, or subsequent CMOS and TTL stages. Each comparator contains independent input and output circuitry. Differential input voltage is evaluated between the inverting and noninverting inputs, and the output transistor is turned off or on according to that relationship and the polarity of the open-collector stage. Because the outputs are open collector, the output voltage depends on the pull-up network rather than the comparator alone. Designers must account for leakage current, pull-up resistance, logic thresholds, and propagation delay when translating a high-impedance output state into a valid digital level. Typical uses include industrial sensor thresholds, battery and power-supply monitoring, overvoltage detection, motor-control signaling, and general-purpose logic interfacing. A split-supply arrangement can compare bipolar signals around ground, while a single-supply arrangement supports systems whose input common-mode range reaches the lower supply rail. The 8-pin SOIC package also supports conventional surface-mount assembly and easy routing between two comparator channels. A key design consideration is that open-collector outputs require an external pull-up resistor. Select that resistor so that its maximum current and the output leakage current still produce a valid high level, while keeping rise time consistent with the required system response. The 300 ns propagation delay is important for high-speed threshold decisions, but slower pull-up networks can add additional delay after the comparator changes state. This page combines manufacturer and distributor information with package guidance, application analysis, cross-brand substitution notes, and engineering-focused design advice to help evaluate the LM2903DRE4 beyond a basic catalog listing.

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LM2903AVQPWR - Dual Differential Comparator | Texas Instruments

LM2903AVQPWRQ1 - Dual 36 V Automotive Comparator | TI

LM2903BIDR - Dual 36V Open-Collector Comparator | Texas Instruments

LM2903D - Dual Open-Collector Comparator | Texas Instruments

LM2903DE4 - Dual 36V Open-Collector Comparator | Texas Instruments

LM2903DG4 - Dual Open-Collector Comparator | Texas Instruments

LM2903DGKRG4 - 36V Dual Comparator | Texas Instruments

LM2903DMR2 - Dual Precision Comparator, 36 V | onsemi

LM2903DR - Dual Open-Collector Comparator | Texas Instruments (Tape & Reel)

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LM2903DRE4 - Dual 2-36V Comparator | Texas Instruments