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LM293H - Dual Differential Comparator | Texas Instruments
LM293H

LM293H - Dual Differential Comparator | Texas Instruments

The Texas Instruments LM293H is a dual differential comparator, an analog comparator IC with two independent comparison channels, open-collector outputs, and a TO-99-8 metal can package. The verified product data identifies the device as a general-purpose, low-power comparator with low offset voltage, operating from single or dual supplies over a wide voltage range. The LM293H is suitable when two signals must be compared and the result must drive TTL, MOS, CMOS, or other digital logic through its open-collector output. A differential comparator is a semiconductor device that compares two input voltages and produces a logic-level indication of their relationship. The dual-channel architecture provides two independent comparators in one package, reducing component count in threshold detection, overvoltage indication, current sensing, and control systems. Its open-collector outputs require an external pull-up resistor when the output must settle to a valid high level. The LM293 family is associated with wide supply capability, single-supply operation, and compatibility with common logic families. The LM293H is identified in the verified distributor data as an 8-pin TO-99-8 device with two channels. The manufacturer family information describes the LM293 as an industrial-grade dual differential comparator. The verified search data specifically lists low power, low offset voltage, rail-to-rail input labeling, open-collector output, and a wide supply operating range. Detailed electrical limits, propagation-delay curves, input common-mode limits, output sink-current limits, and temperature limits must be confirmed in the manufacturer datasheet before final design release. Typical uses include battery-powered monitoring, industrial sensor interfaces, overvoltage detection, temperature threshold circuits, and dual-rail control logic. In a practical design, each comparator can monitor a signal against a reference voltage while the open-collector output drives a pull-up and the downstream logic input. Care is required when inputs approach supply rails, when output pull-up speed affects timing, or when unused comparator channels are left unconnected. This page combines verified manufacturer and distributor links, package identification, application guidance, and structured comparison information. It intentionally avoids filling unavailable electrical values with guesses; consult the current manufacturer datasheet for authoritative limits, ordering details, and lifecycle information.

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LM293N - Dual Open-Collector Comparator, 8-DIP | STMicroelectronics
LM293N

LM293N - Dual Open-Collector Comparator, 8-DIP | STMicroelectronics

The STMicroelectronics LM293N is a dual, general-purpose voltage comparator with two independent channels, open-collector outputs, and an 8-DIP package. According to the STMicroelectronics LM293N product description, it is designed for single-supply operation across a wide voltage range, while operation from split power supplies is also possible. The verified distributor listing identifies the device as an 8-DIP comparator with open-collector/open-drain, rail-to-rail characteristics. Specific voltage, current, timing, temperature, and logic-threshold values were not included in the provided data and therefore require verification from the manufacturer datasheet before design release. A voltage comparator is an analog semiconductor that compares two input voltages and produces a logic-level indication of their relationship. The LM293N contains two independent comparators, allowing one package to implement threshold detection, window comparison, free-running oscillator, or simple analog-to-logic conversion. Within the broader hierarchy, it is a comparator IC, then an analog integrated circuit, and finally a semiconductor. Its open-collector outputs can sink external current and normally require a pull-up resistor when the design expects a high-level output. The primary documented feature is its ability to operate from a single supply over a wide range of voltages, with split-supply operation also supported. The two independent channels provide design flexibility for comparing a sensor against a reference, checking a power rail, or generating complementary decisions in control circuitry. The open-collector architecture can support wired logic and level translation, but the external pull-up, output current, propagation delay, and input common-mode limits must be checked against the actual datasheet. LM293N is suitable for industrial control, instrumentation, power-supply supervision, sensor interfaces, and embedded threshold detection. In a single-supply circuit, place the input network so that the signal remains within the device's verified common-mode range. In a split-supply circuit, confirm the positive and negative rail limits and the permitted total voltage. Because the provided data does not state absolute maximum ratings, supply voltage, input offset, output-current capability, response time, or operating temperature, those values should not be assumed. Design practice should include a local bypass capacitor, a defined pull-up resistor for each open-collector output, and protection for exposed sensor inputs. Avoid relying on an output high level until the pull-up network and downstream load have been analyzed. Verify input polarity, output inversion, hysteresis, and logic compatibility with the system controller. The 8-DIP package is mechanically important: use the manufacturer pinout and maintain adequate lead spacing during assembly. This page combines the verified LM293N product identity, package information, application context, datasheet links, and engineering considerations. It intentionally does not fabricate electrical ratings, pricing, lifecycle claims, or unreported pin names; obtain the current manufacturer datasheet and distributor quotation for production decisions.

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LM293P - Dual 36V Differential Comparator | Texas Instruments
LM293P

LM293P - Dual 36V Differential Comparator | Texas Instruments

Texas Instruments LM293P is a dual differential comparator rated for a 2 V to 36 V supply range, with a stated propagation delay of 300 ns, packaged as an 8-pin PDIP. Each channel provides independent differential inputs and an open-collector output, making the device suitable for threshold detection, level translation, relay driving, and industrial control logic. A differential comparator is an analog integrated circuit that compares two input voltages and changes its output state according to their relative polarity. The LM293 belongs to the comparator hierarchy, which sits within linear and mixed-signal ICs. Its open-collector outputs can sink current from a pull-up network, allowing the outputs to be wired together when wired-OR operation is required. The principal features of the LM293P are its dual-channel architecture, differential input arrangement, wide 2 V to 36 V operating supply range, open-collector outputs, and 300 ns response time. The package is an 8-pin PDIP, providing a through-hole footprint suitable for prototypes, legacy industrial equipment, repair assemblies, and applications where leaded components are preferred. The LM293 contains two electrically independent comparator channels. Differential inputs are presented through inverting and non-inverting pins, while the output uses an open-collector transistor capable of pulling the output node toward ground. A pull-up resistor is required to establish a high output level, and the output stage can sink current from TTL, CMOS, and other logic families within the device's stated operating limits. Typical uses include monitoring a control or battery voltage against a reference, detecting sensor crossings, implementing overvoltage and undervoltage protection, driving relay or indicator circuits, and providing threshold-compatible interfaces between analog and digital systems. Because the device supports a wide supply range, it can also be used in industrial systems operating from conventional low-voltage DC rails. Designers must provide the required output pull-up and verify input common-mode limits, output-current limits, and operating temperature against the manufacturer datasheet. Input protection, bypassing, and leaded-component spacing should also be considered when the LM293P is used in high-noise or high-voltage surroundings. This page combines verified manufacturer and distributor information with package-level selection guidance, verified drop-in candidates, application use cases, and practical design notes. It is intended to help engineers identify whether the LM293P fits an existing 8-pin comparator design without confusing electrically related but mechanically different packages.

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LM321MF/NOPB - 1MHz, Single Op Amp, 3-32V, SOT-23-5 | TI
LM321MF/NOPB

LM321MF/NOPB - 1MHz, Single Op Amp, 3-32V, SOT-23-5 | TI

The Texas Instruments LM321MF/NOPB is a single-channel, low-power operational amplifier delivering 1 MHz unity-gain bandwidth and 0.4 V/us slew rate in a 5-pin SOT-23 (DBV) package. It operates from a single 3 V to 32 V supply (or dual +/-1.5 V to +/-16 V) and supports an input common-mode range that includes ground, enabling true single-supply operation. Housed in the industry-standard SOT-23-5 footprint, the LM321MF/NOPB combines economy with TI's LM321 bipolar architecture originally developed by National Semiconductor. An operational amplifier (op amp) is a high-gain DC-coupled electronic voltage amplifier with differential inputs and a single-ended output. Op amps belong to the amplifier IC family within integrated circuits, which also includes instrumentation amplifiers, comparators, and specialty audio/video amplifiers. The LM321MF/NOPB specifically is a general-purpose single op amp, meaning one amplifier channel per package; it sits in the hierarchy: op amp -> amplifier IC -> analog IC -> integrated circuit -> semiconductor. Key features include 1 MHz gain-bandwidth product, 0.4 V/us slew rate, low input offset voltage (typical 2 mV), input common-mode range that includes the negative rail, and large capacitive-load drive capability. The bipolar input stage with class-AB output provides robust performance across the wide 3 V to 32 V supply range. Internal ESD protection and thermal shutdown enhance field reliability. The LM321MF/NOPB uses a bipolar transistor input stage rather than CMOS or JFET, giving it inherently low noise voltage density but somewhat higher input bias current than modern CMOS alternatives. Its wide supply range allows direct connection to industrial 24 V rails, 12 V battery systems, or +/-15 V analog supplies, eliminating the need for additional level shifters. The 1 MHz bandwidth is sufficient for audio, sensor conditioning, and many active-filter topologies. Typical applications include transducer signal conditioning, low-frequency active filters, current sensing with high-side or low-side shunt, audio pre-amplifier stages, and general-purpose amplification in industrial controls. The SOT-23-5 footprint is ideal for space-constrained PCB designs such as handheld instruments and IoT sensor modules. When designing with the LM321MF/NOPB, verify input bias current (45 nA typical) is acceptable for high-impedance sensor interfaces. Place a 0.1 uF decoupling capacitor close to the VCC pin and ensure output capacitive loads stay within the datasheet's stability region to avoid oscillation. This page synthesizes distributor pricing, drop-in SOT-23-5 alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a faster path from datasheet to prototype.

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LM324AD - Quad 30V 1.2MHz Op Amp | Texas Instruments
LM324AD

LM324AD - Quad 30V 1.2MHz Op Amp | Texas Instruments

Texas Instruments LM324AD is a general-purpose quad operational amplifier containing four independent, internally frequency-compensated amplifiers. The device supports a 30 V maximum supply, operates at a gain-bandwidth product of 1.2 MHz, and has a 3 mV input offset voltage rating. It is supplied in a 14-pin SOIC package, enabling one component to provide four amplified channels in a compact surface-mount footprint. The LM324 family is designed for single-supply operation over a wide voltage range, while also supporting split-supply arrangements when the circuit requires a bipolar input or output range. An operational amplifier is an analog signal-processing IC that uses high-gain differential amplification to increase the voltage presented at its input. The LM324 belongs to the general-purpose amplifier segment of the larger voltage-feedback operational-amplifier hierarchy. Internally compensated amplifiers simplify closed-loop design because no external frequency-compensation components are required for ordinary gain configurations. Four independent amplifiers in one package reduce board area and component count in multi-channel sensor, filtering, buffering, and control circuits. The verified product information identifies four amplifier circuits, a 1.2 MHz gain-bandwidth product, a 3 mV offset-voltage rating, and operation from a supply as high as 30 V. The internal compensation supports stable operation in standard noninverting and inverting amplifier arrangements. Because the LM324AD is a general-purpose device, design engineers should treat it as a cost-conscious solution rather than a precision op amp with rail-to-rail outputs, low offset over temperature, or very low noise. Common uses include buffering sensor outputs, amplifying low-level control signals, active filtering, differential signal conditioning, and driving ADC input stages. The four independent channels can process separate analog signals or implement stages such as a two-stage filter or transimpedance-style front end. Single-supply operation is particularly useful in industrial controls, embedded instrumentation, educational electronics, and simple battery-powered systems where a negative rail is unavailable. When using the LM324AD, verify input and output common-mode limits, output-current capability, load impedance, and stability under the selected closed-loop gain before finalizing the design. Place input and output compensation or decoupling components close to the relevant pins, keep sensitive input routing away from switching nodes, and include adequate bypassing on the power supply. The 14-pin SOIC package also requires attention to thermal pad-free layout and copper continuity when operating at high ambient temperatures. This product page combines verified manufacturer and distributor information, lifecycle-oriented sourcing details, same-footprint alternatives, and practical design guidance. It adds a same-package comparison framework and implementation notes that are more useful for PCB and sourcing decisions than a distributor listing alone.

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LM324ADE4 - Quad 1.2MHz Op Amp | Texas Instruments | SOIC-14
LM324ADE4

LM324ADE4 - Quad 1.2MHz Op Amp | Texas Instruments | SOIC-14

Texas Instruments LM324ADE4 is a quad general-purpose operational amplifier with four independent, internally frequency-compensated amplifiers, 1.2 MHz gain-bandwidth product, and 0.5 V/µs slew rate in a 14-pin SOIC package. The device operates from a single supply or split supplies, with the listed operating range extending to ±16 V. An operational amplifier is an analog signal-conditioning IC that compares two input voltages and amplifies their difference through high open-loop gain. The LM324ADE4 belongs to the operational-amplifier hierarchy within amplifier ICs and analog semiconductors. Its four independent channels allow one package to provide feedback control, buffering, level shifting, summation, and general analog amplification without requiring four separate amplifier packages. The four amplifiers feature internally frequency compensation, allowing operation as stable unity-gain buffers without external compensation components. A 1.2 MHz gain-bandwidth product and 0.5 V/µs slew rate support audio-band and general-purpose closed-loop applications. The device also supports operation from a single positive supply as well as split bipolar supplies, making it useful in mixed industrial, instrumentation, control, and consumer circuits. The 14-SOIC package is pin-compatible with the established LM324 family arrangement, which simplifies repair, prototyping, and board reuse. Each amplifier has differential inputs, an output, and power connections, with the package distributing those functions across four channels. Because the amplifiers are independent rather than sharing internal output stages, each channel can be used for a separate signal path or left unused when its input and output are properly configured. Typical uses include sensor-signal conditioning, low-current motor and actuator drivers, audio preamplification, analog summing networks, threshold detection, and general instrumentation. The 1.2 MHz bandwidth is adequate for many audio and control signals, but designs requiring substantially higher bandwidth, lower offset voltage, faster settling, or lower noise should use a more specialized amplifier family. Design carefully around input common-mode range, output swing, input bias current, and the limits of each amplifier channel. Keep sensitive inputs away from noisy return paths, observe the recommended bypass capacitors at the supply pins, and avoid operating near the output saturation limits. The manufacturer datasheet should guide input/output protection, supply decoupling, unused-channel configuration, and maximum input and output voltage conditions. This product page combines the LM324ADE4 operating parameters, package details, practical application guidance, pin-focused design considerations, and qualified drop-in alternatives. It is intended to help engineers identify where this economical quad general-purpose amplifier fits and where a higher-performance or application-specific amplifier is more appropriate.

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LM324ADR2 - 3-32V Quad 1MHz Op Amp | onsemi
LM324ADR2

LM324ADR2 - 3-32V Quad 1MHz Op Amp | onsemi

The onsemi LM324ADR2 is a general-purpose, single-supply quad operational amplifier with four amplifier circuits, a 3 V to 32 V supply range, 1 MHz gain-bandwidth product, and a maximum input offset voltage of 3 mV, housed in a 14-pin SOIC package. The device supports true differential inputs and combines four amplifiers in one package, reducing board area in cost-sensitive analog signal-conditioning systems. An operational amplifier is an amplifier IC that uses high open-loop gain and negative feedback to amplify the difference between two input voltages. The quad configuration places four amplifiers in one device, making it widely used in general-purpose signal conditioning, sensor interfaces, filtering, and control systems. Within the electronics hierarchy, an operational amplifier is a linear amplifier IC and a building block for analog signal-processing circuits. Key characteristics include four amplifier sections, operation from 3 V to 32 V, a 1 MHz gain-bandwidth product, and a 3 mV maximum input offset voltage. The wide supply-voltage range allows the LM324ADR2 to operate from common low-voltage supplies as well as higher-voltage industrial rails. Its internal input-stage characteristics are designed for general-purpose applications rather than high-speed precision signal paths. The quad architecture consolidates four amplifiers into one 14-pin SOIC package. This can simplify PCB layouts and reduce component count in designs requiring several independent analog channels. Because all four sections share one package and supply connection, engineers must still consider common supply-current variation, thermal behavior, ground routing, and channel-to-channel performance when planning precision measurements. Typical uses include low-frequency sensor amplification, audio preamplification, DC signal conditioning, active filtering, voltage comparison, and industrial control interfaces. The 1 MHz gain-bandwidth product is appropriate for signals well below its upper bandwidth limit, while the 3-32 V operating range supports both compact low-voltage systems and higher-voltage industrial electronics. For reliable layout, route analog inputs and feedback connections away from switching-current paths, connect the ground reference properly, and place input and output bypass capacitors close to the device. Avoid using the LM324ADR2 where very low offset, very low bias current, rail-to-rail output swing, or high-speed closed-loop performance is required without first checking the full operating conditions. This page organizes the LM324ADR2 electrical characteristics, package information, drop-in candidates, application guidance, and design notes into a practical engineering reference for analog designers.

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LM324ADR2G - Quad Op Amp, 3-32V, 1MHz SOIC-14 | onsemi
LM324ADR2G

LM324ADR2G - Quad Op Amp, 3-32V, 1MHz SOIC-14 | onsemi

The onsemi LM324ADR2G is a low-cost quad operational amplifier with four independent general-purpose amplifier circuits, true differential inputs, a supply range of 3V to 32V single-supply (or ±1.5V to ±16V split supply), a 1 MHz gain-bandwidth product, and a 0.6 V/µs slew rate, housed in a 14-pin SOIC package supplied on tape and reel. A quad operational amplifier is an integrated circuit that packs four identical, frequency-compensated op amp stages onto a single silicon die, sharing one set of power pins. Within the amplifier hierarchy, it belongs to the general-purpose bipolar op amp family: operational amplifier -> linear amplifier IC -> analog signal conditioning IC. Quad op amps reduce board area, cut per-channel cost, and improve channel-to-channel thermal matching versus four single op amps. Key features include single-supply operation down to 3V with input common-mode range that includes ground - the defining trait that made the LM324 the industry-standard quad op amp. The A-grade suffix guarantees a maximum input offset voltage of 3 mV, tighter than the base LM324. Internally frequency compensation eliminates external compensation components, and the low supply current of approximately 700 µA per amplifier (typical for the family) suits battery-powered designs. Technically, the LM324ADR2G uses a mature bipolar process with PNP input stages that enable ground-sensing inputs. The output stage is a classic single-ended Class-AB emitter follower, which means it can sink only limited current near ground and exhibits output crossover behavior under light loads - a known characteristic designers must account for in precision or audio paths. Typical applications include transducer signal conditioning, DC gain blocks, active filters, comparators, voltage followers, and industrial sensor interfaces where single-supply, ground-referenced inputs simplify the power architecture. Design consideration: keep total supply voltage within 32V, and remember the output cannot swing rail-to-rail - headroom of roughly 1.5V to the positive rail is required at moderate loads. This page adds value beyond the manufacturer datasheet by synthesizing distributor pricing, verified drop-in alternatives, a parametric comparison table, and practical design notes in one place.

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LM324ADRE4 - Quad 1.2MHz Op Amp in 14-SOIC | Texas Instruments
LM324ADRE4

LM324ADRE4 - Quad 1.2MHz Op Amp in 14-SOIC | Texas Instruments

Texas Instruments LM324ADRE4 is a quadruple general-purpose operational amplifier with four independent amplifier channels, a 1.2 MHz gain-bandwidth product, and a 0.5 V/us slew rate. The device operates from ±1.5 V to ±16 V and is packaged in a 14-pin SOIC. An operational amplifier is an analog signal-conditioning semiconductor that amplifies the difference between its inverting and non-inverting inputs. The LM324 belongs to the general-purpose op-amp hierarchy, combining four amplifiers in one integrated circuit. This integration reduces board area and simplifies designs requiring multiple low-frequency signal channels, such as sensor conditioning, audio paths, data acquisition, and industrial control loops. Each channel supports single-supply or dual-supply operation. Key characteristics include a 1.2 MHz gain-bandwidth product, 0.5 V/us slew rate, and a supply-voltage range of ±1.5 V to ±16 V. The four-channel architecture makes the device useful for amplifier arrays, active filters, comparators, buffer stages, and transducer interfaces. The 14-pin SOIC is a standard surface-mount package suitable for conventional PCB assembly and rework. The LM324ADRE4 is designed for general-purpose applications where a wide bandwidth, adequate slew rate, and economical quad integration are more important than low offset voltage, rail-to-rail output, or high precision. Its 14-pin package provides one amplifier section per three-and-a-half pins, with the positive supply connected to pin 4 and the negative supply connected to pin 11 in the standard dual-supply configuration. Grounding the negative supply pin permits single-supply operation when the signal and output remain within the usable common-mode range. Typical uses include low-frequency audio amplification, sensor signal conditioning, active filter stages, voltage followers, comparators, and general instrumentation. In multi-stage designs, the four channels can implement cascaded gain, summing, difference, or buffering functions while reducing component count. Independent amplifier sections also allow unused channels to be configured conservatively rather than left floating. Layout should keep feedback resistors and input traces close to the device, maintain short return paths to the supply ground, and place input bypass capacitance near the supply pins. Check output-current and capacitive-load limits for the selected operating condition. Because the LM324 is a general-purpose amplifier rather than a precision or rail-to-rail part, verify input common-mode range, output swing, offset, and noise requirements against the actual signal. This page combines the manufacturer-family specifications with same-package alternatives, a parameter comparison, and practical PCB guidance. It is designed to support quick part selection while directing engineers to the manufacturer datasheet and pin-description table for final circuit qualification.

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LM324ADRG4 - 1.2MHz Quad Op Amp, 14-SOIC | Texas Instruments
LM324ADRG4

LM324ADRG4 - 1.2MHz Quad Op Amp, 14-SOIC | Texas Instruments

Texas Instruments LM324ADRG4 is a standard general-purpose, four-circuit operational amplifier in a 14-pin SOIC package. Each circuit has a 1.2 MHz gain-bandwidth product, 0.5 V/us slew rate, and operation from single or split supplies over a ±1.5 V to ±16 V range. The four amplifiers are independent, high-gain, frequency-compensated stages designed for general-purpose signal conditioning. An operational amplifier is an amplifier IC used within a feedback network to control gain, amplify differential signals, buffer inputs, perform comparisons, or drive analog stages. The LM324 belongs to the operational-amplifier hierarchy, which includes amplifier ICs, analog signal-chain ICs, and semiconductor devices. Its ability to operate from a single supply makes it useful in battery-powered, industrial-control, instrumentation, and consumer circuits where one supply rail is more practical than split bipolar rails. The LM324 family's key characteristics include a typical supply-current drain of 0.8 mA and a common-mode input-voltage range that includes ground. These characteristics support low-power analog designs where the input signal may approach the lower supply rail. Each amplifier is frequency compensated, reducing the external compensation components normally required in precision applications. The 1.2 MHz bandwidth is sufficient for general-purpose audio, control, sensing, and signal-shaping stages but is not intended for high-speed data acquisition or demanding wideband filtering. Typical uses include current sensing around a low-side shunt, low-side transistor control, sensor amplification, audio channels, and general-purpose buffering. The 14-SOIC package provides a conventional through-hole-compatible footprint for PCB assembly. Because each of the four amplifier sections is independent, unused sections should be configured according to the manufacturer's recommended practice rather than left floating. A key design consideration is the input common-mode range. The LM324 can accept inputs that include ground, making it suitable for many single-supply circuits, but it cannot swing all the way to the positive supply rail. Output swing, load capability, and input bias behavior must therefore be checked against the actual signal range. Decoupling should follow the manufacturer circuit recommendations, with short supply traces and a local bypass capacitor helping maintain stable operation. This product record combines the verified LM324ADRG4 electrical ratings, package information, sourcing links, pin-compatible family options, and practical design guidance. It also distinguishes true same-footprint alternatives from related amplifier families that differ in electrical behavior, qualification, package, or pin assignment.

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LM324AM - 4-Channel 3-32V Low-Power Op Amp | Texas Instruments
LM324AM

LM324AM - 4-Channel 3-32V Low-Power Op Amp | Texas Instruments

The Texas Instruments LM324AM is a four-channel, general-purpose operational amplifier operating from a single supply of 3 V to 32 V in a 14-pin SOIC package. Each amplifier provides approximately 65 dB CMRR, operates with an output current up to 40 mA, and is intended for low-power signal-conditioning applications. The LM324AM combines four independently usable amplifier sections in one surface-mount package, reducing board area compared with four separate single or dual amplifier packages. An operational amplifier is an analog signal-processing IC that amplifies the voltage difference between its inverting and non-inverting inputs. The LM324 belongs to the general-purpose operational-amplifier hierarchy: operational amplifier → voltage-feedback amplifier → integrated amplifier IC. Its four internal sections support common tasks including voltage buffering, transducer amplification, cross-coupled differential stages, analog filtering, and sensor-signal conditioning while operating from a single positive supply. The principal advantages of the LM324AM are its low-power four-channel integration, 3 V to 32 V single-supply range, approximately 65 dB CMRR, and low-power characterization emphasized by distributors. The 14-pin SOIC format supports conventional surface-mount assembly, while the four amplifier channels can provide independent gain or buffering functions within one package. The listed operating-temperature range is 0 °C to 70 °C, matching a general-purpose commercial-temperature class rather than an explicitly automotive-qualified product. The internally frequency-compensated architecture makes the LM324AM suitable for straightforward closed-loop amplifier configurations without external compensation networks. Designers should still verify input common-mode range, output swing, output-current capability, noise, slew rate, offset voltage, and channel behavior against the manufacturer datasheet for the exact production source and grade. Because LM324-family devices are also offered by multiple manufacturers, procurement should confirm the manufacturer marking, temperature grade, qualification status, and traceability. Typical uses include industrial 4-20 mA current-loop receivers, low-voltage sensor amplifiers, audio preamplifier stages, active filters, and general analog control boards. The integrated quad format is particularly useful when four similar amplifier channels are required. For a single- or dual-channel design, however, a one- or dual-amplifier package can reduce unused channels, power consumption, and PCB area. The principal design consideration is ensuring that the input and output operating points remain within the device's allowable common-mode and output-swing limits. Layout should keep feedback-loop connections short, provide local bypassing at the supply pins, and avoid placing high-current return paths beneath sensitive analog inputs. Stable operation near ground-level signals should be checked carefully when the source impedance is high or when the required output amplitude approaches the supply rails. This page consolidates verified distributor and manufacturer information, package-level replacement guidance, practical layout notes, and parameter-by-parameter comparisons. It also distinguishes verified facts from specifications that require confirmation from the exact manufacturer datasheet, helping engineers select and qualify the LM324AM without relying on generic family assumptions.

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LM324AMX/NOPB - 32V Quad 1MHz Op Amp | Texas Instruments
LM324AMX/NOPB

LM324AMX/NOPB - 32V Quad 1MHz Op Amp | Texas Instruments

The Texas Instruments LM324AMX/NOPB is a low-power, general-purpose quad operational amplifier containing four independent, high-gain, internally frequency-compensated amplifiers. The device operates from a single power supply across a 3 V to 32 V range and provides approximately 1 MHz gain-bandwidth performance. It is packaged in a 14-pin SOIC (D) rated for a 0°C to 70°C ambient temperature range. An operational amplifier is an analog signal-conditioning IC that amplifies the difference between its inverting and non-inverting inputs. The operational-amplifier category includes general-purpose amplifiers, precision amplifiers, instrumentation amplifiers, and comparators; the LM324 belongs to the general-purpose single-supply amplifier family. Its four independent channels can run from the same supply while handling separate signal paths. The LM324AMX/NOPB provides a large DC voltage gain of 100 dB and is internally compensated for stable operation at unity gain. Its wide 3 V to 32 V supply range supports both conventional 5 V and 12 V analog systems as well as higher-voltage industrial rails. The output can swing from approximately 0 V to VCC minus 1.5 V, making rail-to-rail operation unnecessary when the signal remains within that range. The input common-mode voltage range includes ground, which is useful for single-supply sensing circuits. The amplifier's low-power architecture suits battery-operated instrumentation, analog signal conditioning, sensor amplification, and control loops where a precision rail-to-rail amplifier is unnecessary. Four amplifiers in one package also reduce board area when a design needs several similar analog channels. The internally compensated topology simplifies stable feedback design around unity gain, although applications requiring higher closed-loop gain or faster settling need additional bandwidth and stability analysis. Typical uses include transducers with ground-referenced outputs, current sensing, buffering, level shifting within the common-mode range, and general-purpose analog filtering. Each channel provides input and output pins in the same 14-pin SOIC outline, so no external isolation or separate bias circuitry is required for the basic amplifier function. Design should preserve the input common-mode and output-swing limits, especially near the positive supply rail. Where the signal can approach the upper rail, add headroom or select an amplifier with rail-to-rail output capability. Decoupling capacitors should be placed close to the supply pins, and unused amplifier channels should be configured conservatively rather than left floating. This page combines manufacturer specifications with package details, application guidance, drop-in replacement analysis, and practical design notes to support faster component selection and PCB planning.

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LM324AN - Quad 30V 1.2MHz Op Amp | Texas Instruments
LM324AN

LM324AN - Quad 30V 1.2MHz Op Amp | Texas Instruments

The Texas Instruments LM324AN is a low-power, quad operational amplifier containing four independent, high-gain, internally frequency-compensated amplifiers in a 14-pin PDIP package. The device operates from a single power supply, supports a maximum supply voltage of 30 V, and is specified for a gain-bandwidth product of 1.2 MHz with an input offset voltage rating of 3 mV. Its operating temperature range is 0°C to 70°C. An operational amplifier is an analog integrated circuit that amplifies the difference between its non-inverting and inverting inputs. The LM324AN belongs to the general-purpose operational amplifier family within the broader voltage-amplifier and analog signal-conditioning hierarchy. Internally compensated gain stages allow the amplifier to provide stable closed-loop operation without an external compensation capacitor, while the differential input architecture supports common-mode operation from ground upward in many single-supply circuits. Each of the four amplifier sections has a differential input, an output, and internal bias compensation. The 3 mV input offset rating is suitable for general instrumentation, sensor interfaces, active filtering, and audio preamplification where the signal is not operating near the precision limits of a dedicated low-offset amplifier. The 1.2 MHz gain-bandwidth product provides adequate bandwidth for low-frequency control, buffering, and modest-frequency signal-processing applications. The LM324AN is a classic single-supply-oriented device, but its wide supply capability also permits conventional dual-supply operation where the common-mode input range permits it. The four independent amplifiers can implement separate gain stages, comparators, filters, or buffer functions in one package. The through-hole PDIP construction is particularly useful for prototype boards, educational systems, industrial controllers, and repair assemblies where socketed or manually inserted parts are preferred over fine-pitch surface-mount packages. Typical uses include DC signal conditioning, bridge-amplifier interfaces, loop filtering, audio mixing stages, general feedback control, and low-cost sensor amplification. Because the LM324AN is not a rail-to-rail input or output amplifier, the engineer should verify input common-mode range and output swing against the selected supply voltage. Decoupling capacitors are normally placed close to the supply pins to control impedance and prevent feedback from disturbing analog signal integrity. For new precision designs, compare the LM324AN with rail-to-rail or low-offset alternatives before committing to the design. For established DIP-14 layouts and repair work, the LM324AN remains useful because several LM324-family devices from different manufacturers are offered in the same 14-pin through-hole footprint. Pricing shown for this page is referenced as of October 29, 2026 and should be rechecked against current distributor inventory. This page consolidates manufacturer specifications, verified distributor listings, cross-reference options, pin-level implementation guidance, and application-specific design notes that help engineers evaluate the LM324AN beyond a basic distributor catalogue entry.

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LM324ANE4 - Quad 14-PDIP Op Amp | Texas Instruments
LM324ANE4

LM324ANE4 - Quad 14-PDIP Op Amp | Texas Instruments

Texas Instruments LM324ANE4 is a low-power, quadruple operational amplifier designed for general-purpose analog signal conditioning from single or split power supplies. The device contains four amplifiers in one 14-PDIP package and is associated with a wide supply-voltage operating range. According to the Texas Instruments LM324 product page, the LM324 family is optimized for low-power operation, while the device description identifies it as a low-power quad operational amplifier for single-supply applications. An operational amplifier is an analog integrated circuit that uses high-gain differential amplification to compare and process voltages. The LM324 family belongs to the operational-amplifier hierarchy within analog and signal-chain ICs. Four amplifiers in one package can support buffer, amplifier, comparator, summing, difference, filtering, and level-conversion functions while reducing board area and external component count. The LM324ANE4 combines four amplifier channels with single-supply operation. The component documentation describes operation from split supplies with a total supply difference from 3 V to 32 V, and notes a typical low supply-current drain of 0.8 mA. Its input common-mode voltage range includes ground, allowing the amplifier to process input signals near the lower supply rail. This rail-to-near-ground input capability is particularly useful in systems powered from a single positive supply. Each internal amplifier includes the input and output functions needed for conventional closed-loop analog designs. Feedback components establish gain and filtering behavior, while the open-loop characteristics of the internal transistor stages determine signal amplification, common-mode behavior, and output-drive capability. Because all four channels share one package and supply pins, the device is especially practical when a board needs several similar signal-conditioning channels rather than unrelated mixed functions. Typical applications include low-frequency audio and control circuits, DC signal amplifiers, active filters, sensor-signal conditioning, and general industrial interface boards. The four-channel organization can simplify a design requiring multiple gain stages or parallel low-bandwidth analog channels. The 14-PDIP package also supports through-hole assembly and prototype-board layouts where a surface-mount package would be inconvenient. Designers should verify the exact input common-mode limits, output-swing limits, supply-current behavior, electrical characteristics, and operating-temperature grade in the manufacturer datasheet before finalizing signal headroom. Input and output stability also depends on the selected feedback network, source impedance, load, decoupling, and board layout. Place bypass capacitors close to the supply pins and keep sensitive input nodes away from high-current return paths. This product page combines manufacturer-product information, datasheet references, package and pinout details, application guidance, and same-footprint alternative analysis. It is designed to help engineers evaluate the LM324ANE4 alongside other Texas Instruments LM324 ordering codes while preserving the constraints of a 14-PDIP, four-channel general-purpose amplifier.

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LM324ANS - Quad 14-SO General-Purpose Op Amp | Texas Instruments
LM324ANS

LM324ANS - Quad 14-SO General-Purpose Op Amp | Texas Instruments

The Texas Instruments LM324ANS is a quad general-purpose operational amplifier packaged in a 14-pin SOIC (14-SO) package. It contains four independent, internally frequency-compensated amplifier sections designed for low-cost signal conditioning, voltage amplification, filtering, comparison, and general analog control applications. The device supports single-supply or dual-supply operation across a wide voltage range, making it suitable for industrial, consumer, instrumentation, and educational equipment. An operational amplifier, or op amp, is a high-gain differential-input amplifier whose feedback network determines the closed-loop behavior. The LM324 belongs to the linear-amplifier hierarchy within the broader voltage-feedback amplifier and analog-signal-conditioning categories. Its four independent sections allow one package to implement several stages in a circuit without requiring four separate amplifier packages. Key features of the LM324ANS include four amplifier sections in one 14-SO package, internal frequency compensation, operation from a single power supply, operation with a positive ground-referenced common-mode input range, and low supply-current consumption. The internal compensation simplifies design because most closed-loop gain configurations do not require an external frequency-compensation capacitor. The wide common-mode and supply ranges are useful when sensing signals near ground or operating from a single battery-derived rail. Each amplifier section has differential inputs and an output, while the package provides a common supply connection. Because the LM324 is intended for general-purpose analog work, it is more appropriate for moderate-bandwidth signal conditioning than for high-speed precision applications. The device can buffer sensor outputs, amplify small voltage changes, implement active filters, and provide simple threshold-based control functions. Its internally compensated architecture favors straightforward, stable implementation over the flexibility of a high-performance precision amplifier. Typical applications include industrial sensor interfaces, audio preamplifier stages, low-frequency active filters, control-loop amplifiers, data acquisition front ends, and educational analog systems. In a sensor interface, the quad configuration can amplify the transducer output, buffer the reference, provide gain, and drive a following filtering stage. In audio equipment, separate sections can handle input amplification, tone-control filtering, and output buffering. The 14-SO package also simplifies assembly in designs that require a quad amplifier but not a high-pin-count or high-speed package. When laying out the circuit, place input and output decoupling capacitors close to the supply pins and keep sensitive input traces away from output and switching nodes. Check input and output common-mode limits for the selected supply voltage, especially when signals approach the positive rail. Use the manufacturer pinout and application guidance for the final PCB implementation.

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LM324AWPT - Quad Low-Power Op Amp, 1.3MHz, TSSOP-14 | STMicroelectronics
LM324AWPT

LM324AWPT - Quad Low-Power Op Amp, 1.3MHz, TSSOP-14 | STMicroelectronics

The STMicroelectronics LM324AWPT is a low-power, low-input-bias-current quad operational amplifier integrating four independent, internally frequency-compensated gain stages in a single 14-pin TSSOP (Tape and Reel) package. The 'A' suffix designates the enhanced input-offset-voltage grade, which tightens Vio to a maximum of 2 mV at 25°C versus 7 mV for the standard LM324, while the 'W' suffix extends the operating temperature range to -40°C to +105°C for industrial environments. Each of the four channels delivers a gain-bandwidth product of approximately 1.3 MHz and a slew rate of 0.4 V/µs, drawing only 1.5 mA of quiescent supply current total regardless of channel loading. A quad operational amplifier (quad op-amp) is a monolithic integrated circuit that places four independent, internally-compensated op-amp cells in one package sharing common power pins. Quad op-amps belong to the broader operational amplifier family, which in turn falls under the linear IC hierarchy and finally under analog signal-conditioning semiconductors. Compared with single or dual op-amps, quad devices reduce PCB area, simplify routing, and lower the per-channel cost in applications requiring multiple gain, buffer, filter or comparator stages. The LM324 series uses bipolar transistor input stages that can operate from a single supply as low as 3 V or from split ±1.5 V to ±16 V rails, with true ground-sensing capability on the input common-mode range. The differential input range includes the negative rail, eliminating the need for external biasing in single-supply designs. Output swing typically reaches within a few millivolts of both rails at moderate loads, and the device sustains continuous output short-circuits to ground or either rail thanks to internal current limiting. Typical applications include active filters, transducer signal conditioning, DC gain blocks, voltage followers, comparators, and general-purpose analog signal chains in consumer, industrial and automotive subsystems. The wide supply range makes the part especially popular in 5 V single-rail microcontroller-interface circuits, where four op-amps share one supply rail alongside the MCU. When designing with the LM324AWPT, place a 0.1 µF ceramic bypass capacitor within 5 mm of the VCC pin and consider the input bias current of 20 nA typical (50 nA maximum) when selecting source impedances — bias currents up to 50 nA across a 100 kΩ source produce a 5 mV offset error. Avoid using this part in precision sub-millivolt instrumentation paths; choose the LM324A-grade offset only when 2 mV is acceptable. Always consult the official STMicroelectronics datasheet for full DC and AC characteristic curves.

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LM324BAIDR - Quad 36V 1.2MHz Op-Amp | Texas Instruments
LM324BAIDR

LM324BAIDR - Quad 36V 1.2MHz Op-Amp | Texas Instruments

The Texas Instruments LM324BAIDR is a quadruple operational amplifier featuring four general-purpose amplifier channels with a 36V maximum supply, 1.2MHz gain-bandwidth product, and a low input offset voltage of 2mV (B, BA versions), housed in a 14-pin SOIC (D) package rated for -40C to +85C operation. An operational amplifier (op-amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, the fundamental building block of analog signal conditioning. In the analog hierarchy, the op-amp sits above discrete transistors and below specialized amplifiers such as instrumentation and audio amplifiers; general-purpose quad op-amps like the LM324 family provide four independent channels in one package for cost-sensitive multi-channel designs. The LM324BA is the next-generation BA version of the classic LM324. Key improvements over legacy LM324/LM224/LM2902 parts include a wide 3V to 36V supply range, tighter 2mV input offset voltage specification, and enhanced robustness, while remaining pin-for-pin drop-in replacements for all legacy versions. The push-pull output stage improves output voltage swing and crossover behavior compared to older Class-AB output stages, reducing the well-known LM324 output crossover distortion near the negative rail. Each of the four amplifiers shares a common supply; single-supply operation down to 3V makes the part suitable for 3.3V and 5V logic-based systems as well as traditional up to 36V industrial rails. The common-mode input range includes the negative rail, a signature LM324-family trait that simplifies single-supply designs such as sensor buffering near ground. Typical applications include industrial signal conditioning, transducer amplifier front ends, active filters, comparators and level shifters, motor-control feedback loops, and consumer appliance analog interfaces. Design consideration: the 1.2MHz gain-bandwidth limits closed-loop bandwidth; at a gain of 10, expect roughly 120kHz of usable bandwidth, so verify gain-phase margin in high-gain configurations. This page synthesizes verified distributor pricing, drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet alone.

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LM324D - Quad 36V Op Amp | Texas Instruments | SOIC-14 (Tape & Reel)
LM324D

LM324D - Quad 36V Op Amp | Texas Instruments | SOIC-14 (Tape & Reel)

The Texas Instruments LM324D is a low-power, quadruple operational amplifier containing four independent, high-gain, internally frequency-compensated amplifiers in a 14-pin SOIC package. The verified product data identifies it as a general-purpose amplifier designed for operation from a single supply or split supply over a wide voltage range, with the B-family supply range specified as 3 V to 36 V. This quad topology lets one compact IC provide four separate analog signal-conditioning channels without requiring four discrete packages. An operational amplifier is an analog amplifier used in the wider semiconductor hierarchy of integrated circuits and analog signal-processing devices. The LM324 family is commonly used for voltage buffering, sensor-interface conditioning, current-to-voltage conversion, audio paths, filters, and control loops. Its single-supply capability is useful when the signal and system share a common ground reference, while split-supply operation supports bipolar signals in applications where positive and negative rails are available. Verified feature data identifies the LM324 family as a next-generation LM324B and LM2902B offering, with B versions intended as drop-in replacements for LM224, LM324, and LM2902 versions. The listed operating supply range is 3 V to 36 V. The family also includes versions with input offset voltage specified as low as plus or minus 2 mV, 2 kV HBM ESD protection for B, BA, and K versions, and internal RF and EMI filtering for B and BA versions. These features support general-purpose analog designs where supply tolerance and input conditioning matter. The LM324D is packaged in the SOIC-14 footprint, making it suitable for conventional PCB assembly and educational, industrial-control, instrumentation, and embedded-control designs. The device is not a precision, rail-to-rail-input amplifier, so input common-mode range, output swing, input bias current, noise, slew rate, and stability behavior must be checked against the actual signal path. The four amplifiers share a package power supply but operate independently at their input, output, and feedback pins. Typical uses include four-channel sensor buffering, low-frequency active filtering, audio preamplification, DC gain stages, comparator-style threshold conditioning with suitable feedback arrangements, and general embedded analog interfaces. When designing around the LM324D, verify the supply rails, keep input and feedback connections short, provide stable bypass capacitance near the supply pins, and account for the amplifier’s output-current and thermal limits. The manufacturer product page and datasheet are the authoritative sources for exact electrical limits and ordering information. This page combines verified manufacturer and distributor links with application guidance and explicitly marks electrical details that were not supplied in the verified excerpts. The LM324D remains a practical choice when four general-purpose amplifiers, single-supply operation, and a standard SOIC-14 footprint are more important than precision or rail-to-rail performance.

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LM324DE4 - Quad 1.2MHz Op Amp, 14-SOIC | Texas Instruments
LM324DE4

LM324DE4 - Quad 1.2MHz Op Amp, 14-SOIC | Texas Instruments

Texas Instruments LM324DE4 is a general-purpose quad operational amplifier with four amplifiers, 1.2 MHz gain-bandwidth product, 0.5 V/µs slew rate, and a ±1.5 V to ±16 V supply range, packaged in a 14-pin SOIC. Each amplifier is designed for conventional analog signal-conditioning applications where low cost, wide supply-voltage operation, and four independent channels in one package are important. An operational amplifier is an amplifier IC that uses high open-loop gain and negative feedback to control gain accurately. The LM324 family combines four general-purpose amplifier channels with internal biasing, allowing each channel to operate without external bias-current compensation in typical applications. Within the semiconductor hierarchy, it belongs to the operational-amplifier, analog-amplifier, analog-IC, and integrated-circuit categories. The four internal channels can be configured as voltage followers, non-inverting or inverting amplifiers, summers, differential amplifiers, filters, comparators, and current-to-voltage converters. A 1.2 MHz gain-bandwidth product is appropriate for audio-frequency and general feedback-control circuits, while the 0.5 V/µs slew rate limits how quickly large voltage changes can be reproduced. The manufacturer datasheet identifies the device as a general-purpose amplifier with four circuits and a 14-pin SOIC package. The architecture makes efficient use of board area by placing four amplifiers in one package. Rail-to-rail output operation and the broad supply range allow the device to operate from single or dual supplies within the stated limits. Its 0.8 mA typical current drain is useful for low-power analog systems, although actual supply current depends on the number of active channels and load conditions. The package is suitable for conventional surface-mount PCB assembly. Typical LM324DE4 applications include audio preamplification, sensor signal conditioning, DC motor-control support circuits, battery-powered instrumentation, general-purpose filters, and active control loops. In multi-channel designs, the common package simplifies routing and inventory management while keeping each amplifier electrically independent. The amplifier should be selected when low bandwidth is acceptable and when a cost-conscious general-purpose implementation is more important than high-speed or low-noise performance. Design with adequate input common-mode range, output-current capability, and supply headroom. Decoupling capacitors should be placed close to the supply pins, and output loads must remain within the package and device thermal limits. Because the LM324DE4 is supplied in a tube, PCB assembly processes must support tube-fed components or require an approved conversion step before placement. This product page consolidates the exact LM324DE4 electrical and package specifications, verified same-package replacement information, a parameter comparison, application guidance, and practical PCB design notes. It is intended to accelerate component selection while preserving the distinction between exact-orderable versions and broader LM324-family devices.

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LM324DG - 4-Channel 1 MHz Op Amp, 3-32 V | onsemi
LM324DG

LM324DG - 4-Channel 1 MHz Op Amp, 3-32 V | onsemi

The onsemi LM324DG is a four-channel general-purpose operational amplifier with true differential inputs, 1 MHz gain-bandwidth product, 0.6 V/us slew rate, and a 3 V to 32 V supply range, housed in a 14-pin SOIC package. The four amplifiers share one package but operate independently, making the device suitable for compact analog signal-conditioning circuits that cannot justify four separate amplifiers. An operational amplifier, or op amp, is a voltage-controlled differential amplifier whose open-loop gain is used to amplify a difference between two input signals. The LM324 belongs to the broader amplifier IC hierarchy: operational amplifier, analog amplifier, semiconductor, and integrated circuit. Its true differential inputs and ability to operate from a single positive supply are particularly useful in circuits that do not have a negative reference rail. Key features include four amplifier channels in one package, a 1 MHz gain-bandwidth product, a 0.6 V/us slew rate, input offset voltage ratings of 5 mV to 7 mV depending on the cited source, and a minimum common-mode rejection ratio of 65 dB. The 3 V to 32 V operating supply range supports both low-voltage logic systems and conventional industrial analog circuits without requiring a separate negative supply. The LM324 architecture is intended for general-purpose voltage amplification rather than precision or high-speed signal conditioning. Its relatively wide input offset voltage and modest gain-bandwidth product make it most appropriate for audio, transducer, buffering, and feedback-control stages where moderate accuracy and bandwidth are sufficient. Designers should account for input offset when measuring small signals and verify gain-bandwidth requirements for closed-loop applications. Typical uses include microphone preamplification, active audio-channel amplification, low-frequency sensor interfaces, industrial control loops, and general buffer stages. Because each channel can be assigned to a different signal or function, four independent amplifier circuits can be implemented on one board while reducing component count and simplifying routing. The primary design consideration is the absence of a negative supply in many applications. Input and output signals must remain within the device's common-mode input and output swing limits, so a negative rail is not required but can improve signal-headroom flexibility. Input and output decoupling should follow the manufacturer datasheet's recommended application circuit, and unused amplifier inputs must be biased so they remain in a defined operating state. This product page consolidates the verified LM324DG specifications, distributor references, drop-in replacement candidates, package details, and practical design guidance. It also distinguishes direct same-package substitutes from functional alternatives so engineers can narrow a replacement search without assuming that every quad op amp is electrically or mechanically interchangeable.

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LM324DG4 - Quad 1.2MHz Op Amp | Texas Instruments
LM324DG4

LM324DG4 - Quad 1.2MHz Op Amp | Texas Instruments

The Texas Instruments LM324DG4 is a general-purpose, four-circuit operational amplifier with a 1.2 MHz unity-gain bandwidth, differential inputs, and a 14-pin SOIC package. It is designed for economical signal conditioning in industrial, instrumentation, control, and sensor-interface systems that operate from a single supply or split supply. Its four amplifiers share common supply pins but have independent input, output, and internal-offset connections. An operational amplifier is an active semiconductor device that amplifies the voltage difference between its differential inputs while using negative feedback to define closed-loop gain and bandwidth. The LM324 belongs to the operational-amplifier hierarchy, where it is also classified as a quad general-purpose amplifier, analog amplifier IC, and signal-conditioning semiconductor. This category makes the LM324 suitable for buffer, amplifier, comparator, differential, and current-to-voltage conversion circuits. The LM324DG4 combines four amplifiers in one 14-SOIC package, reducing component count and board area compared with four single-amplifier packages. Its 1.2 MHz gain-bandwidth product supports general-purpose signal amplification rather than high-speed precision work. The common-mode input range includes ground, which allows single-supply sensing of signals near the lower supply rail. A typical low supply-current drain of 0.8 mA per amplifier also supports power-conscious designs. The LM324 architecture is suited to low- and moderate-frequency closed-loop applications where economy, ease of use, and supply flexibility matter. Because the device includes internal bias compensation, external nulling components are not required for normal operation. The common-mode range includes ground but does not extend to the positive supply rail, so input and output headroom must be checked when signals approach either rail. Typical applications include sensor-signal conditioning, transducer amplification, current-to-voltage conversion, audio preamplification, low-frequency active filters, and general industrial control interfaces. In each case, the amplifier operates inside a negative-feedback network, and the closed-loop bandwidth and output swing must satisfy the signal amplitude and accuracy requirements. A key design consideration is rail-to-rail compatibility. The LM324 can operate from one supply or two supplies, but its output cannot swing fully to the positive rail and input signals must remain inside its common-mode range. Decoupling near the supply pins, stable feedback-component selection, and output-loading checks remain necessary even though the circuit is commonly used with basic resistor networks. This page combines the verified LM324DG4 device identity, package information, functional characteristics, source links, and engineering guidance with application-oriented selection criteria. It also distinguishes electrically meaningful alternatives from simple reel or tape packaging codes and highlights where compatibility checks are required before substitution.

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LM324DR - Quad 36V Op Amp | Texas Instruments | SOIC-14
LM324DR

LM324DR - Quad 36V Op Amp | Texas Instruments | SOIC-14

The Texas Instruments LM324DR is a low-power, quadruple operational amplifier containing four independent, high-gain, internally frequency-compensated amplifiers in a 14-pin SOIC package. The verified product data identifies it as a general-purpose amplifier designed for operation from a single supply or split supply over a wide voltage range, with the B-family supply range specified as 3 V to 36 V. This quad topology lets one compact IC provide four separate analog signal-conditioning channels without requiring four discrete packages. An operational amplifier is an analog amplifier used in the wider semiconductor hierarchy of integrated circuits and analog signal-processing devices. The LM324 family is commonly used for voltage buffering, sensor-interface conditioning, current-to-voltage conversion, audio paths, filters, and control loops. Its single-supply capability is useful when the signal and system share a common ground reference, while split-supply operation supports bipolar signals in applications where positive and negative rails are available. Verified feature data identifies the LM324 family as a next-generation LM324B and LM2902B offering, with B versions intended as drop-in replacements for LM224, LM324, and LM2902 versions. The listed operating supply range is 3 V to 36 V. The family also includes versions with input offset voltage specified as low as plus or minus 2 mV, 2 kV HBM ESD protection for B, BA, and K versions, and internal RF and EMI filtering for B and BA versions. These features support general-purpose analog designs where supply tolerance and input conditioning matter. The LM324DR is packaged in the SOIC-14 footprint, making it suitable for conventional PCB assembly and educational, industrial-control, instrumentation, and embedded-control designs. The device is not a precision, rail-to-rail-input amplifier, so input common-mode range, output swing, input bias current, noise, slew rate, and stability behavior must be checked against the actual signal path. The four amplifiers share a package power supply but operate independently at their input, output, and feedback pins. Typical uses include four-channel sensor buffering, low-frequency active filtering, audio preamplification, DC gain stages, comparator-style threshold conditioning with suitable feedback arrangements, and general embedded analog interfaces. When designing around the LM324DR, verify the supply rails, keep input and feedback connections short, provide stable bypass capacitance near the supply pins, and account for the amplifier’s output-current and thermal limits. The manufacturer product page and datasheet are the authoritative sources for exact electrical limits and ordering information. This page combines verified manufacturer and distributor links with application guidance and explicitly marks electrical details that were not supplied in the verified excerpts. The LM324DR remains a practical choice when four general-purpose amplifiers, single-supply operation, and a standard SOIC-14 footprint are more important than precision or rail-to-rail performance.

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LM324DR2 - 4-Op-Amp 32V 1MHz SOIC-14 | onsemi
LM324DR2

LM324DR2 - 4-Op-Amp 32V 1MHz SOIC-14 | onsemi

onsemi LM324DR2 is a four-amplifier general-purpose operational amplifier integrated circuit with true differential inputs, designed for single-supply operation over a 3 V to 32 V supply range. Each of the four amplifiers supports rail-to-rail output swing, operates at approximately 1 MHz gain-bandwidth product, and offers a typical slew rate of 0.6 V/µs. The device is packaged in a 14-pin SOIC configuration identified as LM324DR2. An operational amplifier is an analog signal-conditioning semiconductor that compares two input voltages and amplifies the difference between them. The LM324 belongs to the quad operational-amplifier family within the broader voltage-amplifier and analog IC hierarchy. Its four amplifiers can perform amplification, buffering, voltage comparison, summation, subtraction, filtering, and transducer-interface functions while sharing one supply package. The LM324 series provides distinct advantages for single-supply systems. True differential inputs allow the amplifiers to operate around ground without requiring a dual supply in many common circuit arrangements. The input common-mode range includes ground, while the output stage can swing close to the negative supply under suitable load conditions. These characteristics make the device useful for battery-powered instrumentation, control loops, sensor interfaces, audio paths, and general industrial signal conditioning. Each amplifier is implemented with true differential input behavior rather than a simple differential-input architecture. The operating bandwidth is approximately 1 MHz, with a typical slew rate of 0.6 V/µs. The offset voltage specification reaches up to 9 mV, while the input bias current is typically 45 nA. The integrated design eliminates the need for four separate single-amplifier packages when a circuit requires several matched functional blocks. Typical uses include low-side current sensing, transducer buffering, active filtering, level shifting, comparator-style threshold circuits, and general instrumentation. The LM324DR2 is particularly suitable for cost-sensitive designs that need four amplifiers but do not require rail-to-rail input operation or the lower offset and bias current of precision amplifier families. Designers should verify input and output common-mode limits at the selected supply voltage and load. Because the output cannot normally reach the positive supply rail, headroom must be preserved when using the device as a buffer. Stable operation also depends on correct feedback compensation, suitable bypass capacitance, source impedance, and load drive. This product record combines the verified LM324DR2 identity and 14-SOIC configuration with practical guidance covering single-supply design, common-mode behavior, application selection, PCB implementation, and honest trade-offs among same-footprint quad-amplifier alternatives.

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LM324DR2G - Quad Op Amp, 3-32V, 1MHz SOIC-14 | onsemi
LM324DR2G

LM324DR2G - Quad Op Amp, 3-32V, 1MHz SOIC-14 | onsemi

The onsemi LM324DR2G is a low-cost quad operational amplifier with four internally compensated, true-differential-input amplifiers in a 14-pin SOIC package, operating from a single 3V to 32V supply (or dual supplies up to +/-16V) with a 1 MHz gain-bandwidth product and 0.6 V/us slew rate. An operational amplifier (op-amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, the foundational building block of the analog signal-chain hierarchy: op-amp -> amplifier IC -> analog front end -> mixed-signal system. The LM324 family is the industry-standard general-purpose quad op-amp, designed specifically for single-supply operation where its input common-mode range includes ground and its output swings to within tens of millivolts of the negative rail. Key features include a wide single-supply range of 3V to 32V, a common-mode input range that extends to the negative rail (ground-sensing capability), a typical input offset voltage of 5 mV (7 mV max per datasheet specifications), a minimum common-mode rejection ratio of 65 dB, and low supply current per amplifier that suits battery-powered designs. Four amplifiers in one SOIC-14 package reduce board area and BOM cost versus four single op-amps. The bipolar architecture is internally frequency-compensated, so no external compensation capacitors are required for unity-gain stability. Because all four amplifiers share one bias network, supply current is lower than four discrete units; however, channels can exhibit minor crosstalk in high-gain audio paths. Typical applications include transducer amplifiers, active filters, comparators (with caution regarding slow recovery), DC gain blocks, level shifters, and signal conditioning in industrial controls, consumer appliances, and automotive-adjacent systems. Designers should note the output stage is not rail-to-rail and can crossover-distort when sourcing current near the negative rail; biasing the output with a pull-down resistor mitigates this. Gain-bandwidth is 1 MHz, so keep closed-loop gains modest for bandwidth-critical circuits. This page adds value beyond the datasheet with distributor pricing tiers, verified drop-in alternatives, a parameter-by-parameter comparison table, and practical design notes not found on the manufacturer product page.

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