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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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LM324DRE4 - Quad 1.2MHz Op Amp | Texas Instruments | SOIC-14
LM324DRE4

LM324DRE4 - Quad 1.2MHz Op Amp | Texas Instruments | SOIC-14

Texas Instruments LM324DRE4 is a low-power, quadruple general-purpose operational amplifier packaged in a 14-pin SOIC. Each of its four independent amplifier sections supports single-supply or split-supply operation, features internal frequency compensation, and includes an input common-mode range that reaches ground. The device operates with low supply-current drain that is largely independent of supply voltage, making it suitable for portable instrumentation and low-power signal-processing systems. An operational amplifier is an analog signal-processing IC that uses high open-loop gain and negative feedback to amplify voltage differences. The LM324 belongs to the general-purpose op-amp family, a versatile subset of amplifier ICs used for buffering, amplification, comparisons, summing, filtering, and control applications. Its four independent sections allow one package to implement several analog functions without requiring four separate single-amplifier packages. The headline operating characteristics include a 1.2 MHz gain-bandwidth product, 0.5 V/us slew rate, and 0.8 mA typical supply-current drain. The 14-pin SOIC package measures 3.90 mm in body width and supports conventional surface-mount assembly. Each amplifier is internally frequency compensated, allowing operation as a closed-loop amplifier without external compensation components in standard configurations. LM324-family devices are designed for broad supply-voltage operation and can also work with positive and negative supplies. Their low quiescent current and ground-referenced common-mode input capability are useful in sensor interfaces powered from a single rail. The amplifier sections operate independently, although sharing the same package provides common supply and ground pins. Typical uses include low-frequency sensor signal conditioning, buffered analog inputs, DC voltage amplification, comparator-style threshold circuits, audio preamplification, and low-frequency active filters. Because the LM324 is intended for general-purpose, low-bandwidth signal conditioning rather than high-speed precision work, system design should account for its 1.2 MHz gain-bandwidth product and 0.5 V/us slew rate. A practical design consideration is common-mode and output range: an input or output operating point must remain inside the amplifier's usable voltage range. Place supply-bypass capacitors close to the supply and ground pins, and route sensitive input traces away from switching nodes and high-current return paths. This page combines package and application guidance with a focused replacement analysis, helping engineers distinguish electrical-compatible alternatives from merely similar quad op-amp families before committing a design to the SOIC-14 footprint.

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LM324DRG3 - 4-Channel 1.2MHz Op Amp | Texas Instruments
LM324DRG3

LM324DRG3 - 4-Channel 1.2MHz Op Amp | Texas Instruments

Texas Instruments LM324DRG3 is a four-channel, general-purpose operational amplifier packaged in a 14-pin SOIC. Each channel provides a 1.2 MHz gain-bandwidth product and a 0.5 V/µs slew rate, making the device suitable for general signal amplification, buffering, and basic analog-control applications. The LM324DRG3 operates from a single supply or split supply and contains four independent, high-gain, frequency-compensated amplifiers. An operational amplifier is a voltage-feedback analog IC that uses differential input voltage to control an amplified output. The LM324 family combines four amplifiers in one package, reducing component count and simplifying layout for low-frequency instrumentation, sensor interfaces, audio paths, and industrial control circuits. Its frequency compensation provides stable operation without an external compensation network in typical closed-loop configurations. The LM324DRG3 provides four general-purpose amplifier circuits, a 1.2 MHz gain-bandwidth product, and a 0.5 V/µs slew rate. Its supply current is listed at 0.8 mA typical, with low supply-current drain described as independent of supply voltage. These characteristics make it practical for battery-operated and low-power analog systems where bandwidth beyond audio and general instrumentation frequencies is not required. Each amplifier is independent, allowing one package to serve four separate signal channels. The device is designed for single-supply operation, split-supply operation, and standard feedback-control topologies. Because its bandwidth and slew rate are modest, applications requiring wideband precision, high output current, rail-to-rail input or output, or fast settling should use a more specialized amplifier family instead. Typical uses include low-frequency sensor conditioning, current-to-voltage conversion, audio preamplification, low-level signal buffering, and general industrial control loops. A common circuit places a resistive feedback network around each amplifier, uses the fourth channel for biasing or active filtering, and decouples the supply pins close to the package with a local bypass capacitor. Design around the 14-pin SOIC footprint and verify the exact pinout in the manufacturer pin-description table before assigning tracks. Keep input and feedback resistors close to their associated pins to minimize parasitic capacitance and oscillation risk. Check output swing, input common-mode range, output loading, and supply limits against the circuit operating points before production release. This page organizes the verified LM324DRG3 specifications, package information, comparisons, and design guidance into one engineering-focused reference. It also distinguishes exact drop-in options from broader functional alternatives and identifies where additional datasheet review is required before substitution.

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LM324DRG4 - Quad 1.2 MHz Op Amp | Texas Instruments
LM324DRG4

LM324DRG4 - Quad 1.2 MHz Op Amp | Texas Instruments

Texas Instruments LM324DRG4 is a low-power, general-purpose quadruple operational amplifier packaged in a 14-pin SOIC. It integrates four independent, high-gain, frequency-compensated amplifiers, and the product listing identifies a gain-bandwidth product of 1.2 MHz. Each amplifier can operate from a single supply or split supply, making the device suitable for general signal-conditioning and control functions that require multiple amplifier channels in one package. An operational amplifier is an analog integrated circuit that uses high open-loop gain and negative feedback to amplify small voltage differences. Quad operational amplifiers combine four individual amplifiers into one package, reducing component count and simplifying PCB routing compared with four separate single or dual amplifier packages. The LM324 family belongs to the broader operational-amplifier, analog-amplifier, and semiconductor hierarchy and is widely positioned for cost-sensitive, general-purpose applications. The LM324DRG4 provides four amplifier channels in one 14-SOIC package and supports operation across single- and split-supply arrangements. Its 1.2 MHz gain-bandwidth product is suitable for moderate-bandwidth signal amplification, while the internal frequency compensation simplifies closed-loop use. Because the device is intended for general-purpose work, designers should verify input common-mode range, output swing, input offset, supply current, and output-current requirements against the manufacturer datasheet for the intended application. Four independent channels permit simultaneous signal processing without crosstalk between amplifier sections. A typical quad device can implement two differential amplifiers, four voltage followers, cascaded gain stages, sensor-conditioning channels, or a mixture of these functions. The internal compensation architecture is intended to provide stable operation in common feedback configurations, but loop gain, source impedance, capacitive loading, and output drive still require application-level validation. Typical uses include low-frequency sensor interfaces, current-to-voltage conversion, general-purpose signal conditioning, industrial control blocks, audio preamplifier stages, and educational or prototype circuits. The single 14-SOIC package is especially useful when board area is constrained and several independent analog channels are required. It can also reduce assembly time and simplify power distribution because all four amplifier sections use the same supply pins. Designers should confirm the exact electrical limits before finalizing a circuit. In particular, single-supply operation can constrain the usable input and output ranges, and the common-mode and output-swing boundaries must not be confused with the supply-voltage limits. Input and output stability should also be checked when driving capacitive loads or operating with unusually high source impedances. This product record combines the manufacturer-defined device identity, package information, operating characteristics, compatible family options, application guidance, and PCB-focused design considerations. It also distinguishes documented facts from parameters that require direct confirmation in the manufacturer datasheet, helping engineers plan the LM324DRG4 for general-purpose analog designs before schematic release.

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LM324DST - Quad Op-Amp, 14-SOIC, Low Power | STMicroelectronics
LM324DST

LM324DST - Quad Op-Amp, 14-SOIC, Low Power | STMicroelectronics

The STMicroelectronics LM324DST is a quad general-purpose operational amplifier integrating four independent, internally frequency-compensated high-gain op-amp circuits in a 14-pin SOIC (SO-14) surface-mount package. It operates from a single supply and delivers an output current capability of approximately 70 mA per the LCSC product listing, with low power consumption and low input bias current. A quad op-amp is an integrated circuit that houses four separate operational amplifiers on one die. An operational amplifier is a high-gain DC-coupled voltage amplifier with differential inputs and, in this family, a single-ended output; it is the foundational building block of the analog signal-chain hierarchy (op-amp -> amplifier IC -> linear IC -> analog/mixed-signal semiconductor). Quad op-amps like the LM324x family are chosen when multiple amplification stages share a common supply and ground, halving board area versus four single op-amps. Key features of the LM324DST include four internally compensated amplifiers requiring no external frequency-compensation components, wide single-supply operation, and an output that swings close to the negative rail, which is valuable in single-supply designs. The common-mode input range extends to include the negative supply rail, enabling sensing near ground. The internal compensation is implemented on-chip, giving unity-gain stability without external capacitors. This makes the part forgiving in general-purpose amplification, active filtering, comparators (non-precision), oscillators, and transducer interface circuits. Typical applications include industrial signal conditioning, consumer audio preamplification, battery-powered instrumentation, and logic-level level-shifting or buffering where four matched gain blocks are needed on one rail. Design consideration: the LM324 class-B output stage can exhibit crossover distortion at light loads and near-zero output currents; for precision AC applications consider a rail-to-rail upgrade such as the TL074 (JFET input) after verifying bias-current requirements. This page synthesizes distributor pricing, verified drop-in alternatives, pinout data, and practical design notes not found in the manufacturer datasheet alone.

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LM324DT - Quad Operational Amplifier | STMicroelectronics
LM324DT

LM324DT - Quad Operational Amplifier | STMicroelectronics

The LM324DT is a quad operational amplifier from STMicroelectronics, featuring four independent, high-gain, internally frequency-compensated op-amps designed to operate from a single power supply over a wide range of voltages. It operates from 3V to 32V (or ±1.5V to ±16V dual supply) and delivers a typical output current of 40mA per channel. The device is housed in a 14-pin SOIC package, making it suitable for space-constrained PCB designs. Data verified as of 2026-08-05. An operational amplifier (op-amp) is a high-gain voltage amplifier with differential inputs and a single-ended output, used in analog signal conditioning, filtering, and mathematical operations. The LM324 is a classic general-purpose op-amp family, known for its low cost, wide supply range, and ability to operate with a single supply, making it a staple in analog electronics. It sits within the hierarchy: operational amplifier -> linear amplifier -> analog IC -> semiconductor. Key features include a wide supply voltage range (3V to 32V), low supply current (typically 700µA per amplifier), common-mode input voltage range including ground, and short-circuit protected outputs. The LM324DT also features true differential input stage, which allows the input to go below ground when operating from a single supply, and it has a typical gain-bandwidth product of 1.3MHz. These features make it versatile for many analog applications. The LM324 uses a bipolar transistor architecture with a class-AB output stage, providing low output saturation voltage and high output current capability. It has an input offset voltage of typically 2mV and input bias current of typically 20nA, which are adequate for many precision applications. The device is internally frequency compensated for unity-gain stability, eliminating the need for external compensation components. Typical applications include transducer amplifiers, DC gain blocks, active filters, and general-purpose signal conditioning in industrial, automotive, and consumer electronics. Its single-supply operation makes it ideal for battery-powered devices and automotive sensor interfaces where a negative rail is not available. When designing with the LM324DT, ensure proper decoupling of the power supply pins with a 0.1µF ceramic capacitor close to the device. The output can swing close to the positive rail but not to the negative rail (ground) when using a single supply, so consider the output voltage range in your design. Also, avoid exceeding the absolute maximum supply voltage of 32V to prevent damage. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the STMicroelectronics datasheet, providing a comprehensive resource for engineers selecting the LM324DT.

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LM324DTBR2 - 3-32V Quad Op Amp | onsemi | TSSOP-14
LM324DTBR2

LM324DTBR2 - 3-32V Quad Op Amp | onsemi | TSSOP-14

onsemi LM324DTBR2 is a standard general-purpose quad operational amplifier with four amplifier circuits in a 14-pin TSSOP package. It operates from 3 V to 32 V, supports single-supply operation, and has a maximum input offset voltage of 5 mV. The LM324 series uses true differential inputs, making the device suitable for conventional amplifier, comparator, buffer, and low-frequency signal-conditioning circuits. An operational amplifier, commonly abbreviated op amp, is an analog semiconductor that amplifies the difference between two input voltages. The LM324 belongs to the broader operational amplifier -> voltage amplifier -> analog IC hierarchy. Its four independent channels make it efficient for designs requiring several analog functions on one board, while its wide supply range permits operation from low-voltage systems through industrial 24 V rails. The principal benefits are the integrated quad-channel configuration, a 3 V to 32 V operating range, and a 5 mV maximum input offset voltage. True differential inputs support input signals referenced to ground in single-supply systems. Its general-purpose architecture also makes it suitable for noninverting and inverting amplifiers, voltage followers, comparators, current-to-voltage conversion, and basic sensor interfaces when precision and speed requirements are modest. Internally, each channel provides differential input and single-ended output operation. The four channels share a common supply connection, while their input stages accept signals from ground to near the positive supply. Because the LM324 is intended primarily for low-cost, general-purpose designs, the application should not assume precision, high speed, rail-to-rail output, or low-noise operation unless those characteristics are separately confirmed for the selected device. Typical uses include four-channel sensor conditioning, industrial control interfaces, low-frequency audio signal paths, battery-powered monitoring equipment, and general analog measurement systems. In a single-supply circuit, designers should bias non-inverting inputs above ground to provide an operating common-mode range. The device is also useful in multiple independent gain stages where using four separate packages would increase board area and cost. A primary design consideration is to keep the input and feedback networks close to the amplifier pins and maintain adequate supply bypassing. The wide supply capability does not remove the need for stable reference and feedback components. Verify input offset, input bias current, output swing, gain-bandwidth, noise, and temperature limits against the manufacturer datasheet before using the LM324 for precision or safety-critical measurements. This page organizes the verified product identity, package information, sourcing questions, cross-reference alternatives, and practical circuit guidance into one engineering reference. It also distinguishes true same-package drop-in candidates from broader LM324 functional equivalents, helping designers avoid packages that require PCB changes.

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LM324DTBR2G - 4-Channel 32V Op Amp | onsemi | Industrial
LM324DTBR2G

LM324DTBR2G - 4-Channel 32V Op Amp | onsemi | Industrial

The onsemi LM324DTBR2G is a general-purpose, four-circuit operational amplifier with true differential inputs, a 3 V to 32 V supply-voltage range, 5 mV input-offset voltage, 1 MHz gain-bandwidth product, and 0.6 V/µs slew rate. The device is supplied in a 14-pin TSSOP package configured for tape-and-reel handling. An operational amplifier is an analog signal-conditioning IC that compares two input voltages and amplifies the difference between them. In its wider hierarchy, the operational amplifier belongs to the amplifier IC family, the analog-processing family, and ultimately the semiconductor category. The LM324 series is specifically positioned as a low-cost general-purpose quad amplifier for single-supply applications, while also supporting conventional split-supply operation. Four independent amplifier sections in one package make the LM324DTBR2G useful where a board needs multiple buffered channels without allocating four separate packages. Its 32 V maximum supply voltage provides useful headroom for industrial, control, and instrumentation circuits. The 1 MHz gain-bandwidth product supports general-purpose gain and buffering rather than demanding high-speed signal-chain applications. The 5 mV input-offset voltage is especially relevant when the amplified differential signal is small or when system calibration must account for amplifier input offset. The LM324 architecture provides true differential inputs and internally compensated operation. Internally compensated amplifiers avoid the need for an external dominant-pole capacitor when operating in a conventional closed-loop configuration. This simplifies board design, although the bandwidth, output drive, and slew rate remain those of a general-purpose device rather than a precision or high-speed amplifier. Typical uses include sensor-signal conditioning, current-to-voltage conversion, low-frequency active filtering, general instrumentation, audio preamplification, and industrial control interfaces. The four-channel organization can also reduce board area when several independent low-frequency analog signals must be amplified or buffered. Application-specific checks should confirm output swing, input common-mode range, load capability, noise, and stability. Designers should place input and output bypassing capacitors close to their associated supply pins, maintain short feedback paths, and verify that the selected feedback network remains stable at the operating gain and capacitive load. Because this is a quad device, unused amplifier sections should still be configured conservatively to avoid floating inputs and unnecessary channel activity. This product page consolidates the manufacturer-family characteristics, exact package information, practical application guidance, and a conservative drop-in comparison. It also distinguishes confirmed substitutions from package-only or functionally similar parts that should not be treated as true PCB drop-ins.

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LM324EDR2G - Quad Single-Supply Op Amp | onsemi | SOIC-14
LM324EDR2G

LM324EDR2G - Quad Single-Supply Op Amp | onsemi | SOIC-14

The onsemi LM324EDR2G is a four-circuit, single-supply operational amplifier in a 14-pin SOIC package. It provides four independent amplifier channels in one package, making it suitable for compact analog signal-conditioning designs that require more than one amplifier function on the same board. The device is identified as a standard general-purpose instrumentation and buffer amplifier. An operational amplifier, commonly called an op amp, is a high-gain differential amplifier used to amplify, buffer, compare, or otherwise condition analog signals. The LM324 belongs to the quad operational-amplifier family, combining four amplifiers in one package. This integration reduces board area and simplifies designs that need several similar analog channels, such as sensor interfaces, filters, control loops, and signal conditioning stages. The LM324EDR2G is intended for single-supply operation, which is useful in systems powered from a positive rail with a ground reference. Its four-circuit arrangement allows designers to assign separate amplifiers to independent signal paths while retaining a common package and supply arrangement. The 14-pin SOIC package is a standard surface-mount option for through-hole assembly and conventional PCB manufacturing. The LM324 is a general-purpose amplifier rather than a precision or high-speed signal-chain device. Its four channels make it especially useful in designs where several moderate-bandwidth, moderate-accuracy amplifier functions are required. Common uses include buffering sensor outputs, amplifying low-level control signals, implementing simple active filters, driving ADC input stages, and providing gain in feedback-control circuits. In practical designs, the amplifier supply pins must be connected according to the manufacturer pinout, and each channel must have appropriate input and feedback components. Input common-mode range, output swing, noise, bandwidth, input bias current, output-current capability, and absolute maximum ratings should be checked against the manufacturer datasheet before finalizing the circuit. Decoupling capacitors should be placed close to the supply pins to reduce supply noise and improve transient response. Because the LM324 is a quad amplifier in a 14-pin SOIC, PCB layouts should preserve adequate clearance around adjacent pins and route sensitive input traces away from noisy switching nodes. The same package footprint and four-channel organization can simplify product-family standardization when a design moves between related quad operational amplifiers. This product page combines the manufacturer-family identity, package information, application guidance, comparison criteria, and practical layout considerations to support faster component selection and PCB planning.

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LM324F-E2 - 4-Channel 3-32V Op Amp | ROHM Semiconductor
LM324F-E2

LM324F-E2 - 4-Channel 3-32V Op Amp | ROHM Semiconductor

ROHM Semiconductor LM324F-E2 is a four-circuit ground-sense operational amplifier in a 14-SOP package. The device is designed for general-purpose signal-conditioning applications using a 3 V to 32 V supply, with four independent amplifier channels and internally frequency-compensated operation. Its 14-pin package supports integration into industrial control, instrumentation, sensor interface, and analog signal-processing equipment. An operational amplifier is an analog integrated circuit that amplifies the voltage difference between its differential inputs while providing feedback control of gain and bandwidth. The quad-amplifier configuration combines four independent channels in one package, reducing board area and simplifying multi-channel designs. The LM324F family belongs to the operational-amplifier hierarchy, which includes general-purpose amplifiers, instrumentation amplifiers, buffer amplifiers, and analog signal-conditioning ICs. The principal features of the LM324F-E2 include four amplifier circuits in one package, a 3 V to 32 V operating supply range, and a 14-SOP surface-mount package. Ground-sense operation makes the device applicable where signals are referenced to the system ground and the amplifier must tolerate operation from a single positive supply. The four-channel architecture is particularly useful when a board requires several similar low-frequency signal paths. Internally frequency compensation allows each amplifier to operate as a stable closed-loop gain stage without external compensation components. This characteristic supports standard inverting, non-inverting, summing, differential, buffer, and feedback-control circuits. Designers should still verify gain-bandwidth, output swing, input common-mode range, slew rate, and output-current behavior against the manufacturer datasheet for the selected operating voltage and load. Typical applications include four-channel sensor conditioning, industrial transducer interfaces, low-frequency control loops, instrumentation buffering, current-to-voltage conversion, and general analog measurement systems. The four channels may be used independently for different signal paths or combined in multi-stage circuits when signal polarity, biasing, and loading permit. The 3 V to 32 V supply range is useful for equipment operating from low-voltage electronics through higher industrial rails. The principal design consideration is ensuring that every input, output, and bias point remains inside the electrical limits for the intended supply. Decoupling capacitors should be placed close to the power pins, the unused amplifier in a quad package should be configured according to the manufacturer guidance, and PCB traces should minimize coupling between high-gain and sensitive input nodes. Confirm the exposed package details and pin assignments on the official LM324F datasheet before layout release. This product page combines the LM324F-E2 package and operating information with application guidance, replacement analysis, and design-focused comparisons. It is intended to help engineers identify the correct amplifier function, verify footprint compatibility, and plan PCB implementation without relying on a distributor summary alone.

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LM324F-GE2 - 3-32V Quad Ground-Sense Op Amp | ROHM
LM324F-GE2

LM324F-GE2 - 3-32V Quad Ground-Sense Op Amp | ROHM

ROHM Semiconductor LM324F-GE2 is a four-circuit, ground-sense operational amplifier designed for single-supply operation from 3 V to 32 V, or dual-supply operation from ±16 V to ±32 V. The device is packaged in a 14-pin SOP and is not recommended for new designs, making it primarily relevant to maintenance, repair, and continuation of existing qualified equipment. An operational amplifier is an analog integrated circuit that uses high-gain differential amplification to compare an input signal with a feedback network. The LM324F family is a ground-sense amplifier, placing emphasis on input and output voltage-range behavior near the lower supply rail. Four amplifiers are integrated into one package, reducing board area in designs requiring multiple general-purpose analog channels. Key characteristics include four amplifier circuits, a 3 V to 32 V single-supply range, a ±16 V to ±32 V dual-supply description, ground-sense input and output operation, and operation from a 14-pin SOP package. Low current consumption and a wide operating-voltage range support battery-powered, industrial-control, instrumentation, and signal-conditioning equipment where component count and supply flexibility are important. The LM324F architecture provides four general-purpose amplifier sections rather than a dedicated high-speed or precision design. Its supply tolerance allows operation from conventional low-voltage rails through substantially higher industrial bus voltages, subject to the absolute maximum ratings and application limits stated in the manufacturer datasheet. Ground-sense behavior should be reviewed carefully when the input source approaches ground or when the output must remain close to the lower rail. Typical uses include DC signal amplification, sensor conditioning, current-loop receivers, sample-and-hold circuits, comparators with external feedback, low-voltage audio stages, and general instrumentation. The four-amplifier arrangement is particularly useful when a design requires several channels with similar voltage ranges and supply requirements within one compact package. Designers should confirm the complete pin assignment, input-common-mode limits, output-swing limits, output-current capability, stability requirements, and bypass-capacitor recommendations in the manufacturer datasheet before layout release. Because the manufacturer marks LM324F as not recommended for new designs, production quantities and availability should be confirmed through the Request a Quote form before committing a new build. This product page consolidates lifecycle guidance, package details, sourcing instructions, replacement analysis, and application-oriented engineering guidance. It also distinguishes the original ground-sense LM324F device from alternatives that share the 14-pin SOP footprint but may differ in supply range, output-stage design, or qualification status.

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LM324FVJ-E2 - 4-Channel 3-32V Op Amp | ROHM
LM324FVJ-E2

LM324FVJ-E2 - 4-Channel 3-32V Op Amp | ROHM

ROHM Semiconductor LM324FVJ-E2 is a four-circuit, general-purpose operational amplifier designed for ground-sense signal conditioning in a 14-pin TSSOP-BJ package. The device operates from a 3 V to 32 V supply according to the Mouser product listing. Its four internal amplifiers support applications that require several independent analog channels in one package, while the ground-sense architecture is intended for measurements referenced close to the source signal. ROHM identifies the LM324FVJ as Not Recommended for New Designs, so it should be selected primarily for maintenance, continuity, or previously validated designs rather than new platform development. An operational amplifier is an analog integrated circuit that compares two input voltages and amplifies their difference. A ground-sense operational amplifier is designed to minimize errors caused by ground currents, especially when the input signal is close to the amplifier supply ground. Within the broader hierarchy, this component is a four-channel general-purpose operational amplifier, placing it among linear amplifiers and analog signal-conditioning ICs. Integrating four amplifiers into one package can reduce board area and simplify multi-channel instrumentation layouts. The principal documented features of the LM324FVJ-E2 are its four amplifier circuits, 3 V to 32 V operating-supply range, general-purpose classification, and 14-TSSOP-BJ surface-mount package. The ground-sense configuration is particularly relevant to sensor interfaces, transducer monitoring, and analog measurement systems where the signal source may sit near ground potential. Because the device is not recommended for new designs, engineers should verify current availability, environmental requirements, and any redesign requirements through the Request a Quote form before committing a new production release. Architecturally, the part combines four amplifiers in one multi-channel package. The wide 3 V to 32 V listed supply range allows operation from conventional low-voltage rails through substantially higher industrial-style rails, provided the circuit remains within every absolute-maximum and operating condition listed in the manufacturer documentation. Ground-sense behavior should be evaluated with the actual source impedance, return-current path, signal bandwidth, and bypass network because PCB grounding errors can dominate the useful accuracy of the measurement chain. Typical uses include four-channel sensor conditioning, low-level analog measurement, industrial control interfaces, instrumentation buffering, and signal amplification referenced to an analog ground. In these applications, the four channels can process related inputs or provide independent gain stages. The common 14-TSSOP-BJ package also allows routing and assembly practices compatible with other fine-pitch surface-mount operational amplifiers, provided designers verify the pinout and land pattern rather than relying only on package dimensions. For robust implementation, place input and supply bypass capacitors close to their associated pins, keep sensitive input traces short, and return amplifier ground currents through a path that avoids high-current load currents. The main engineering tradeoff is lifecycle suitability: the LM324FVJ-E2 offers a familiar ground-sense quad-amplifier format but is marked Not Recommended for New Designs, so a new design should weigh continuity against the use of a currently recommended amplifier family.

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LM324J - Quad 32 V 1 MHz Op Amp | Texas Instruments
LM324J

LM324J - Quad 32 V 1 MHz Op Amp | Texas Instruments

The Texas Instruments LM324J is a low-power, general-purpose, quad operational amplifier built for single-supply operation across a wide voltage range. Each of its four amplifiers is intended for 32 V maximum supply operation and 1 MHz gain-bandwidth performance, while the J package is a 14-pin ceramic dual in-line package identified by the verified DigiKey listing. The device combines four amplifiers in one package, making it useful when several independent analog stages must fit on a relatively compact board. An operational amplifier is an active analog component that uses high open-loop gain and negative feedback to amplify the difference between two input signals. In the broader electronics hierarchy, an op amp belongs to amplifier ICs and analog signal-chain devices. The LM324 family supports common general-purpose tasks including voltage buffering, summing, comparison, filtering, transducer conditioning, and gain stages, provided the designer observes its supply, input, output, and stability limits. Verified distributor information identifies the LM324J as a standard, general-purpose, four-circuit amplifier in a 14-CDIP package. The Mouser listing further identifies it as a military quad operational amplifier with 32 V operation and 1 MHz bandwidth. Those confirmed points establish the device’s most important selection criteria: four integrated channels, wide single-supply capability, roughly 1 MHz bandwidth, and a through-hole ceramic DIP footprint for higher-temperature or ruggedized legacy-style assemblies. Each amplifier shares the same positive supply, negative supply, and ground pins on the 14-pin package. The common architecture saves board area and reduces package count compared with four separate single op-amp ICs. It also makes rail planning and decoupling straightforward: the designer must ensure that all four channels remain within their electrical limits simultaneously and that power-supply bypass capacitors are placed close to the package supply pins. Typical uses include industrial control interfaces, sensor signal conditioning, low-frequency active filters, audio preamplification, instrumentation, power-supply feedback, and general mixed-signal embedded systems. The 1 MHz bandwidth favors low- to moderate-frequency signals rather than high-speed video, RF, or precision signal-path work. For those applications, verify exact gain-bandwidth, slew-rate, input-offset, output-current, and temperature limits against the official LM324 manufacturer documentation before production release. The principal design consideration is ensuring adequate output-voltage headroom and stability at the selected supply voltage, load, and gain. Because the verified excerpts do not publish exact capacitor values, common-mode limits, output-current ratings, or full pin names, those details remain deliberately unstated rather than guessed. This page combines verified sourcing data, package information, application guidance, and a conservative interpretation of the LM324J’s general-purpose role. Its differentiation is practical rather than headline performance: one 14-CDIP package supplies four general-purpose amplifier channels, while the 32 V and 1 MHz figures cover common industrial and embedded signal-conditioning needs. For an existing 14-pin LM324-family footprint, engineers should still compare the exact suffix, grade, pinout, and operating-temperature limits before approving a substitute.

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LM324KD - Quad 30V 1.2MHz Op Amp | Texas Instruments
LM324KD

LM324KD - Quad 30V 1.2MHz Op Amp | Texas Instruments

The Texas Instruments LM324KD is a quad general-purpose operational amplifier rated for supply voltages up to 30 V, with a gain-bandwidth product of 1.2 MHz and improved 2 kV ESD protection. The device contains four independent, frequency-compensated amplifiers in a 14-pin SOIC package measuring 0.154 inch, or 3.90 mm, wide. Its combination of single- or dual-supply operation, low input bias current, and broad supply range makes it suitable for general-purpose analog signal conditioning. An operational amplifier, or op amp, is a high-gain differential amplifier used within the wider voltage-amplifier and analog IC hierarchy. LM324-family devices are commonly used for buffering, voltage amplification, current-to-voltage conversion, filtering, comparators, and instrumentation interfaces. Unlike rail-to-rail precision amplifiers, the LM324 uses conventional bipolar input stages and includes internal compensation, allowing straightforward use without an external frequency-compensation network. The LM324KD provides four amplifiers in one package, reducing board area and simplifying designs that require multiple similar analog channels. Its verified supply capability covers 3 V to 32 V for single-supply operation and ±1.5 V to ±16 V for dual-supply operation. The listed per-channel output current capability is 60 mA, while the input bias current is listed as 20 nA. The 1.2 MHz gain-bandwidth product supports moderate-bandwidth closed-loop applications. Each channel is independent and can operate with common input ranges that include ground, making single-supply sensing of signals near 0 V practical. The LM324K family also incorporates improved 2 kV ESD protection, an important consideration for exposed sensor, interface, and control boards. The internal architecture prioritizes forgiving general-purpose operation rather than the low offset, low drift, and rail-to-rail performance expected from precision or modern energy-efficient amplifier families. Typical uses include low-frequency sensor amplifiers, buffered analog inputs, audio preamplification, loop-filter sections, motor and industrial control interfaces, and general instrumentation. The 14-pin SOIC package supports conventional surface-mount assembly, while the four-amplifier configuration can implement two differential channels, four single-ended channels, or a mixture of amplifiers and comparators. Designers should preserve adequate input and output common-mode range, account for the typical 0.5 uA supply current, and verify operation across the full industrial supply range. Decoupling close to the positive and ground pins is recommended, and signal routing should minimize parasitic capacitance around high-impedance input nodes. The published 24-page datasheet and manufacturer product page should be consulted for the complete electrical limits, pin configuration, and test conditions. This page combines verified manufacturer and distributor information, current pricing, package and pinout details, drop-in replacement evidence, and application-focused design guidance. It is intended to help engineers compare the LM324KD with other LM324-family choices while preserving PCB footprint, supply-voltage, and signal-chain compatibility.

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LM324KDR - Quad 30V 1.2MHz Op Amp | Texas Instruments (Tape & Reel)
LM324KDR

LM324KDR - Quad 30V 1.2MHz Op Amp | Texas Instruments (Tape & Reel)

The Texas Instruments LM324KDR is a quad general-purpose operational amplifier rated for supply voltages up to 30 V, with a gain-bandwidth product of 1.2 MHz and improved 2 kV ESD protection. The device contains four independent, frequency-compensated amplifiers in a 14-pin SOIC package measuring 0.154 inch, or 3.90 mm, wide. Its combination of single- or dual-supply operation, low input bias current, and broad supply range makes it suitable for general-purpose analog signal conditioning. An operational amplifier, or op amp, is a high-gain differential amplifier used within the wider voltage-amplifier and analog IC hierarchy. LM324-family devices are commonly used for buffering, voltage amplification, current-to-voltage conversion, filtering, comparators, and instrumentation interfaces. Unlike rail-to-rail precision amplifiers, the LM324 uses conventional bipolar input stages and includes internal compensation, allowing straightforward use without an external frequency-compensation network. The LM324KDR provides four amplifiers in one package, reducing board area and simplifying designs that require multiple similar analog channels. Its verified supply capability covers 3 V to 32 V for single-supply operation and ±1.5 V to ±16 V for dual-supply operation. The listed per-channel output current capability is 60 mA, while the input bias current is listed as 20 nA. The 1.2 MHz gain-bandwidth product supports moderate-bandwidth closed-loop applications. Each channel is independent and can operate with common input ranges that include ground, making single-supply sensing of signals near 0 V practical. The LM324K family also incorporates improved 2 kV ESD protection, an important consideration for exposed sensor, interface, and control boards. The internal architecture prioritizes forgiving general-purpose operation rather than the low offset, low drift, and rail-to-rail performance expected from precision or modern energy-efficient amplifier families. Typical uses include low-frequency sensor amplifiers, buffered analog inputs, audio preamplification, loop-filter sections, motor and industrial control interfaces, and general instrumentation. The 14-pin SOIC package supports conventional surface-mount assembly, while the four-amplifier configuration can implement two differential channels, four single-ended channels, or a mixture of amplifiers and comparators. Designers should preserve adequate input and output common-mode range, account for the typical 0.5 uA supply current, and verify operation across the full industrial supply range. Decoupling close to the positive and ground pins is recommended, and signal routing should minimize parasitic capacitance around high-impedance input nodes. The published 24-page datasheet and manufacturer product page should be consulted for the complete electrical limits, pin configuration, and test conditions. This page combines verified manufacturer and distributor information, current pricing, package and pinout details, drop-in replacement evidence, and application-focused design guidance. It is intended to help engineers compare the LM324KDR with other LM324-family choices while preserving PCB footprint, supply-voltage, and signal-chain compatibility.

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LM324KN - Quad 14-PDIP General-Purpose Op Amp | Texas Instruments
LM324KN

LM324KN - Quad 14-PDIP General-Purpose Op Amp | Texas Instruments

Texas Instruments LM324KN is a four-circuit general-purpose operational amplifier in a 14-pin PDIP package. The device combines four independent, internally frequency-compensated amplifiers with an operating supply range extending to 36 V, a typical low supply-current drain of 0.8 mA, and input common-mode operation that includes ground. It is designed for single-supply or split-supply operation and includes 2 kV ESD protection. An operational amplifier is an analog signal-conditioning IC that uses feedback to control gain, amplify differential inputs, buffer sensors, and perform general-purpose analog calculations. The LM324 family belongs to the operational-amplifier hierarchy within analog and mixed-signal semiconductors. Its common-mode input range includes ground, making it useful in circuits powered from a positive rail and sensing signals near 0 V. The four independent channels can perform simultaneous amplification, filtering, buffering, or summing functions while sharing one package. Internal frequency compensation makes the LM324 suitable for general-purpose closed-loop amplifier designs without external compensation networks. Its low 0.8 mA typical supply-current drain helps reduce system power consumption, while the broad supply capability supports industrial and legacy equipment operating from multiple rail voltages. Common applications include sensor-signal conditioning, low-level current-to-voltage conversion, audio preamplification, active filtering, comparators with additional biasing, and general instrumentation. The 14-pin PDIP format also supports manual assembly and through-hole prototyping in laboratories, educational equipment, industrial control systems, and repair products. When designing an LM324KN circuit, verify input and output voltage limits against the selected operating rail, including output swing limitations when driving capacitive loads. Place input compensation or bias resistors close to the relevant amplifier pins, keep feedback loops short, and provide stable bypassing at the supply pins to limit noise and prevent oscillation. This product page combines the LM324KN package and feature information with practical analog-design guidance, application context, verified alternatives, and a parameter comparison for faster component selection.

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