LM324ADRG4 - 1.2MHz Quad Op Amp, 14-SOIC | Texas Instruments
MPN: LM324ADRG4 ✓ Hoạt độngLM324ADRG4 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho LM324ADRG4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với LM324ADRG4 (cùng hình factor và footprint) — khác nhau ở Slew Rate.
LM324AMX/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM324MX/NOPB
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM324ADR2G
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →LM324KADR
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
LM2902DR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →LM324ADRG4 Tỷ lệ tối đa & tính chất điện
| 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 |
| Hộp | 14-pin SOIC |
| Số chân | 14 pins |
| Kiểu lắp đặt | Surface mount |
Hướng dẫn cấu hình chân LM324ADRG4 14-pin soic
Cấu hình chân cho LM324ADRG4 (14-pin soic gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho LM324ADRG4.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LM324ADRG4 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM324ADRG4 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Four independent amplifiers in one 14-pin package (vsLM2904PW)
- Directly documented family comparison (vsLM324AMX/NOPB)
- Single-supply common-mode operation including ground (vsLM324MX/NOPB)
Ghi chú thiết kế
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.
Thông tin tuân thủ
The supplied product records do not explicitly state the LM324ADRG4 compliance attributes. The ordering code does not identify an AEC-Q100-qualified automotive variant.