LM324PWRE4 - Quad 1.2MHz Op Amp | Texas Instruments
부품 번호: LM324PWRE4 ✓ 활성LM324PWRE4 개요
An operational amplifier is a voltage-feedback amplifier that uses differential input voltage to control an output voltage. The LM324 combines four independent amplifiers in one package, placing it within the operational amplifier, analog amplifier, and integrated-circuit hierarchies. It is intended for general-purpose signal conditioning, where a low-cost amplifier with a wide supply range and straightforward pinout offers greater utility than a specialized precision or high-speed device.
The four channels are independently frequency-compensated, allowing simultaneous operation without a shared bias or gain network. Each channel supports push-pull output operation, while the 1.2 MHz gain-bandwidth product and 1 V/us slew rate make the device suitable for audio, control, instrumentation, and low-to-moderate-frequency closed-loop applications. The 14-TSSOP package provides a compact surface-mount format for multi-channel analog boards.
The LM324 family is designed for single-supply or split-supply operation. The manufacturer datasheet identifies operation from single or split supplies over a wide voltage range, while comparison data lists ±16 V, or 32 V total, capability for this device. This range allows the amplifier to process signals referenced to ground, to a midpoint, or to split positive and negative rails when the circuit requires bipolar output under a common ground reference.
Typical uses include four-channel sensor conditioning, low-frequency active filtering, audio preamplification, differential measurement stages, and general feedback-control loops. In each case, the amplifier converts a small differential input into an output determined primarily by external feedback components. Its four channels can also implement cascaded stages, buffered sensor outputs, or multiple independent signal paths on one board.
PCB design should preserve short feedback paths and place input-referring components close to the relevant amplifier pins. Decoupling should follow the manufacturer's recommended power-pin configuration, while unused channels require appropriate biasing rather than being left floating. Because the TSSOP lead pitch is narrow, assembly capability and solderability should be checked before committing the footprint to a high-volume assembly process.
This product record combines the LM324PWRE4 package and electrical information with practical selection guidance, drop-in replacement analysis, and board-level implementation considerations. It is designed to help engineers identify a suitable amplifier, compare documented alternatives, and establish a robust 14-TSSOP layout before schematic release.
드롭인 대체품: LM324PWRE4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LM324PWRE4 (동일 폼 팩터 및 풋프린트) — 차이점: Gain-Bandwidth Product, Amplifier Type, Architecture, Number of Amplifiers, Package.
LM324PWR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM324APWR
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM324PWRG4
✅ 드롭인가격 문의
데이터시트 보기 →LM324PWRG3
✅ 드롭인가격 문의
데이터시트 보기 →LM2904PW
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →LM324PWRE4 최대 정격 & 전기적 특성
| Product Type | Quad general-purpose operational amplifier |
| Number of Amplifier Channels | 4 circuits |
| Channel Architecture | 4 independent amplifiers |
| Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 1 V/us |
| Supply Voltage Range | Up to ±16 V (32 V total) |
| Supply Configuration | Single supply or split supply |
| 출력 유형 | Push-pull |
| Frequency Compensation | Internally frequency-compensated |
| 패키지 | 14-TSSOP |
| Package Width | 4.40 mm |
| Package Length | 0.173 inch (4.39 mm) |
| 실장 유형 | Surface mount |
| RoHS 상태 | Unknown |
| REACH Status | Unknown |
LM324PWRE4 핀 구성
| 핀 1 | OUT1 — Amplifier 1 output |
| 핀 2 | IN1- — Amplifier 1 inverting input |
| 핀 3 | IN1+ — Amplifier 1 non-inverting input |
| 핀 4 | V- — Negative supply connection |
| 핀 5 | IN2+ — Amplifier 2 non-inverting input |
| 핀 6 | IN2- — Amplifier 2 inverting input |
| 핀 7 | OUT2 — Amplifier 2 output |
| 핀 8 | OUT3 — Amplifier 3 output |
| 핀 9 | IN3- — Amplifier 3 inverting input |
| 핀 10 | IN3+ — Amplifier 3 non-inverting input |
| 핀 11 | V+ — Positive supply connection |
| 핀 12 | IN4+ — Amplifier 4 non-inverting input |
| 핀 13 | IN4- — Amplifier 4 inverting input |
| 핀 14 | OUT4 — Amplifier 4 output |
일반적인 애플리케이션
LM324PWRE4 적합 용도: 6 애플리케이션s: Four-Channel Sensor Conditioning, Audio Preamplifier and Mixer, Active Analog Filters, Industrial Control Loops, Data Acquisition and Buffered Outputs, Portable and Battery-Powered Interfaces.
Four-Channel Sensor Conditioning
The LM324PWRE4 is suitable for conditioning up to four low-frequency sensor signals when cost, simplicity, and independent channels matter more than precision or high bandwidth. Its four internally compensated amplifiers can each implement a noninverting, inverting, or differential stage, while the 1.2 MHz gain-bandwidth product provides useful closed-loop bandwidth for temperature, pressure, and position sensors. The 14-TSSOP package keeps the four analog channels compact, and the 1 V/us slew rate supports reasonably fast input transitions. According to the Texas Instruments datasheet, single- or split-supply operation supports both grounded sensor systems and bipolar measurement front ends. Engineers should still verify input common-mode range, output swing, offset voltage, and noise against the sensor output range before fixing the gain.
추천
Audio Preamplifier and Mixer
The LM324PWRE4 can implement four auxiliary audio preamplifier or mixer channels in entry-level analog equipment. Its 1.2 MHz gain-bandwidth product is suitable for audio-band amplification, while the 1 V/us slew rate provides headroom for ordinary low-frequency signals and transients. Each independently compensated channel can process a different source, allowing a compact design with fewer packages than discrete single amplifiers. The 14-TSSOP footprint simplifies routing when the board is assembled with standard surface-mount capability. According to the Texas Instruments datasheet, the device is internally compensated and accepts single or split supplies. Audio designers should verify the required output swing, input bias behavior, channel matching, and distortion at the selected closed-loop gain rather than treating the bandwidth figure as a complete audio-performance specification.
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Active Analog Filters
The LM324PWRE4 is a practical choice for first-order and moderate-Q active filter stages spanning audio, control, and instrumentation signals. Its 1.2 MHz gain-bandwidth product gives the design more closed-loop bandwidth than the signal frequencies commonly used in audio filters, while the 1 V/us slew rate helps preserve low-distortion large-signal behavior. Four independent channels allow a complete filter or several cascaded sections to be implemented in one 14-TSSOP package. According to the Texas Instruments datasheet, internal frequency compensation removes the need for an external compensation capacitor in standard closed-loop arrangements. Component tolerances and the amplifier's finite gain-bandwidth product can shift the nominal cutoff and damping, so simulations should include realistic resistor and capacitor tolerances and verify the finished response across temperature.
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Industrial Control Loops
The LM324PWRE4 is well suited to general industrial control functions that require several low-frequency error amplifiers, comparators, or actuator drivers. Its four independent channels can each compare a control signal with a reference and provide an amplified error voltage to a downstream stage, while 1.2 MHz bandwidth and 1 V/us slew rate are ample for many slow plant-control loops. The ability to operate from a single supply simplifies 24 V-derived system architectures when local regulation is present, and split-supply operation remains available for bipolar signals. According to the Texas Instruments datasheet, the device is designed for broad supply operation. Control engineers must verify output-current capability, input common-mode limits, saturation behavior, and stability before using it to drive a load directly or near a power stage.
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Data Acquisition and Buffered Outputs
The LM324PWRE4 can buffer or amplify the outputs of data-conversion systems where multiple low-frequency channels need to drive downstream circuitry. Four separate amplifiers can isolate successive converter outputs, scale bipolar sensor signals, or provide gain before an ADC input, while the 1.2 MHz gain-bandwidth product is sufficient for many moderate-rate acquisition stages. Its push-pull outputs and single- or split-supply flexibility make it useful around both grounded and bipolar measurement systems. According to the Texas Instruments datasheet, each channel is independently frequency-compensated. For acquisition designs, the critical checks are settling behavior, output swing, input bias current, offset voltage, and capacitive-load drive; a nominal bandwidth figure alone does not establish acquisition accuracy or establish suitability for high-impedance sources.
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Portable and Battery-Powered Interfaces
The LM324PWRE4 can provide low-frequency analog amplification in portable equipment when its supply and current requirements match the design. Four channels reduce package count when an instrument includes several sensor inputs, switches, or status signals, while the compact 14-TSSOP format leaves more board area for batteries and display circuitry. The 1.2 MHz bandwidth and 1 V/us slew rate are sufficient for many human-scale interface signals rather than high-speed data paths. According to the Texas Instruments datasheet, the amplifier supports single- or split-supply operation, which helps when the signal reference is shifted into the supply range. Designers should calculate quiescent-current contribution and analog headroom over the battery discharge profile, then confirm that output swing remains sufficient for the downstream ADC or display interface.
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추천 제품 요약
엔지니어링 참조 데이터: LM324PWRE4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM324PWR | LM324APWR | LM324PWRG4 | LM324PWRG3 | LM2904PW |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Amplifier Channels | 4 | 4 | 4 | 4 | 4 | 4 |
| Product Class | General-purpose operational amplifier | General-purpose operational amplifier | A-grade LM324-family operational amplifier | LM324-family operational amplifier | LM324-family operational amplifier | LM2904-family operational amplifier |
주요 차별점
- Four independent amplifier channels in one package (vs TLV2402ID)
- Broad split-supply operating range (vs LMV324IDR)
- Higher slew rate than the cited LMV324 comparison part (vs LMV324IDR)
- Direct same-brand family options for PCB reuse (vs LM324PWR)
설계 노트
Place the power bypass capacitor adjacent to pins 11 and 4, with a short and low-inductance return path to the supply system. Keep the four channels' feedback resistors and non-inverting inputs close to their corresponding pins to reduce parasitic pickup and high-frequency feedback effects. The 14-TSSOP footprint has a 0.65 mm lead pitch, so verify solder mask, paste volume, land length, and assembly capability against the manufacturer package drawing before PCB release.
Do not allow an unused amplifier channel to float. Configure the inputs so the unused channel remains in a stable feedback configuration referenced to a valid common-mode voltage. Also verify the input common-mode range and output swing against the actual supply and signal levels. The 1.2 MHz gain-bandwidth product does not guarantee linear operation at every amplitude or frequency; the 1 V/us slew rate can become the limiting factor for rapidly changing large-signal outputs.
Route sensitive inputs away from supply, output, and high-impedance feedback nodes. For instrumentation or sensor interfaces, use a grounded guard or shielding strategy where leakage and injected current can affect the source. Where one channel drives a longer trace, maintain adequate output-current margin and avoid excessive capacitive loading. The compact TSSOP package improves routing density but leaves little physical separation, making careful component placement and short analog traces important.
규정 준수 정보
The product is a general-purpose analog integrated circuit, so AEC-Q100 qualification is not applicable to the standard LM324PWRE4 ordering code. RoHS, REACH, lead-free, halogen-free, and conflict-minerals status require confirmation from the manufacturer or current material-compliance documentation.