LM324ADRG4 - 1.2MHz Quad Op Amp, 14-SOIC | Texas Instruments
부품 번호: LM324ADRG4 ✓ 활성LM324ADRG4 개요
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.
드롭인 대체품: LM324ADRG4 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LM324ADRG4 (동일 폼 팩터 및 풋프린트) — 차이점: Slew Rate.
LM324AMX/NOPB
✅ 드롭인가격 문의
데이터시트 보기 →LM324MX/NOPB
✅ 드롭인가격 문의
데이터시트 보기 →LM324ADR2G
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →LM324KADR
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
LM2902DR
✅ 드롭인가격 문의
데이터시트 보기 →LM324ADRG4 최대 정격 & 전기적 특성
| Product Type | Quadruple operational amplifier |
| Number of Amplifier Circuits | 4 circuits |
| Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 0.5 V/us |
| Minimum Total Supply Voltage | ±1.5 V |
| Maximum Total Supply Voltage | ±16 V |
| Typical Supply Current Drain | 0.8 mA |
| Common-Mode Input Range | Includes ground |
| Amplifier Architecture | Four independent, high-gain, frequency-compensated amplifiers |
| Supply Configuration | Single supply or split supply |
| 패키지 | 14-pin SOIC |
| 핀 수 | 14 pins |
| 실장 유형 | Surface mount |
LM324ADRG4 14-pin soic 핀 구성 가이드
LM324ADRG4(14-pin soic 패키지)의 핀 구성입니다. 이 아날로그 부품에는 입력, 출력, 전원 공급 핀이 있습니다. 오프셋 널, 보상, 인에이블 핀 구성은 제조사 데이터시트를 참조하십시오. 신호 컨디셔닝 및 증폭기 회로에 이상적입니다.
다음에 대한 상세 핀아웃 데이터 없음: LM324ADRG4.
다음을 참조하십시오: 데이터시트 전체 핀 구성은 다음을 참조하십시오.
일반적인 애플리케이션
LM324ADRG4 적합 용도: 6 애플리케이션s: Low-Side Current Sensing, Industrial Sensor Signal Conditioning, Audio Preamplifier Channels, Transistor Control Loops, Battery-Powered Monitoring Equipment, Data Acquisition Interface Circuits.
Low-Side Current Sensing
The LM324ADRG4 is suitable for amplifying the differential voltage produced by a low-side shunt resistor because its common-mode input range includes ground. Place one input on the shunt load side and the other on the supply side so the amplifier rejects the larger common-mode voltage while preserving the small differential signal. The 1.2 MHz gain-bandwidth product supports practical bandwidth in current-control and power-monitoring circuits, while the 0.5 V/us slew rate handles moderate control-loop edges. Validate the maximum shunt voltage against the common-mode range and check output swing before scaling the gain.
추천
Industrial Sensor Signal Conditioning
The LM324ADRG4 can amplify weak sensor signals in industrial control boards operating from a single supply. Its common-mode input range includes ground supports sensors whose output begins near 0 V, while the 1.2 MHz bandwidth and 0.5 V/us slew rate cover many temperature, pressure, and position conditioning stages. The typical 0.8 mA supply-current drain reduces the load on low-power rails. Because the LM324 is a general-purpose amplifier, the design should include offset, bias-current, output-swing, and noise analysis when sensor accuracy is more important than basic signal amplification.
추천
Audio Preamplifier Channels
The four independent LM324ADRG4 amplifier sections can implement several general-purpose audio preamplifier channels in compact equipment. A 1.2 MHz gain-bandwidth product is adequate for many low-frequency audio paths, and the 0.5 V/us slew rate supports routine signal movement rather than ultra-low-distortion work. The ground-inclusive common-mode input range is valuable in single-supply audio circuits where signals are biased around the lower rail. Evaluate output drive, distortion, channel-to-channel matching, and input bias effects for high-fidelity or headphone-driving applications, where a rail-to-rail precision amplifier may be preferable.
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Transistor Control Loops
The LM324ADRG4 can serve as an error amplifier or driver in simple transistor-based regulator and control loops. Its 1.2 MHz bandwidth supports loop bandwidth well beyond basic temperature and slow industrial-control loops, while the 0.5 V/us slew rate gives useful transient response for modest operating frequencies. Because the output cannot swing completely to the positive supply rail, the feedback network should account for the usable output range. Stable feedback design, output loading, and loop-gain stability must be checked over the full input and temperature range.
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Battery-Powered Monitoring Equipment
The LM324ADRG4 is useful in battery-powered monitoring equipment because it can operate from low single-supply voltages and has a typical supply-current drain of 0.8 mA. Its four independent amplifier sections can condition multiple sensor channels while keeping the external component count low. The common-mode range including ground is especially helpful for portable systems whose measured signals start near 0 V. Designers should still verify the minimum operating supply, input bias contribution, output swing, and quiescent-current behavior over temperature because low-power requirements often demand tighter control than a general-purpose amplifier specification provides.
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Data Acquisition Interface Circuits
The LM324ADRG4 can provide input buffering, gain stages, and offset or reference conditioning for moderate-speed data-acquisition systems. Its 1.2 MHz gain-bandwidth product supports many multiplexed sensor interfaces, and the 0.5 V/us slew rate is sufficient when the signal bandwidth remains well below that limit. The four sections reduce the number of packages needed when several low-speed channels require conditioning. For high-resolution conversion, however, settling time, offset voltage, input bias current, noise, and output swing can dominate accuracy, so a precision amplifier is usually preferable for demanding measurements.
추천
추천 제품 요약
엔지니어링 참조 데이터: LM324ADRG4 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM324AMX/NOPB | LM324MX/NOPB | LM324ADR | LM324KADR | LM2902DR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-pin SOIC | 14-pin SOIC - same footprint | 14-pin SOIC - same footprint | 14-pin SOIC - same footprint | 14-pin SOIC - same footprint | 14-pin SOIC - same footprint |
| Amplifier Circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits | 4 circuits |
| Supply Configuration | Single supply or split supply | Single supply or split supply | Single supply or split supply | Single supply or split supply | Single supply or split supply | Single supply or split supply |
주요 차별점
- Four independent amplifiers in one 14-pin package (vs LM2904PW)
- Directly documented family comparison (vs LM324AMX/NOPB)
- Single-supply common-mode operation including ground (vs LM324MX/NOPB)
설계 노트
Do not assume the output can reach either supply rail. The LM324 family is known for a common-mode input range that includes ground, but its output swing and input common-mode behavior have limits. Bias single-supply signals into the usable input range and keep the feedback network inside the amplifier's linear operating region. Check output swing under the intended load before finalizing the gain stage.
Place the power bypass capacitor close to the supply and ground pins, and route the amplifier outputs and feedback components away from noisy digital and switching paths. Because all four amplifier sections share package power connections, inadequate supply decoupling can affect every channel simultaneously. Use short ground returns and a quiet analog ground strategy where the board combines sensitive analog conditioning with digital or power-conversion circuitry.
Verify closed-loop stability when the LM324 drives a capacitive load or a long PCB trace. The 1.2 MHz gain-bandwidth product and 0.5 V/us slew rate are adequate for general-purpose signals, but high-frequency phase margin, output-capacitance tolerance, and load transients must be evaluated. Add an isolation resistor or redesign the output network if the measured circuit oscillates or exhibits excessive peaking.
For a single 5 V supply, the LM324ADRG4 cannot use the complete 0 V to 5 V output range. Set the target output below the positive rail with adequate margin for load and temperature, or choose a rail-to-rail amplifier when the signal must approach 5 V. The typical 0.8 mA supply-current drain is low, but total system current still includes load current and any biasing network.
규정 준수 정보
The supplied product records do not explicitly state the LM324ADRG4 compliance attributes. The ordering code does not identify an AEC-Q100-qualified automotive variant.