LM2902EDR2G - Quad Single-Supply Op Amp, 14-SOIC | onsemi
부품 번호: LM2902EDR2G ✓ 활성LM2902EDR2G 개요
A quad operational amplifier is a multi-channel analog building block in which four voltage amplifiers share a common package and power supply. Each channel offers inverting and non-inverting inputs and a single output. The quad configuration lets one part provide four amplifier functions - instrumentation gain stages, active filters, comparators, level shifters or buffer stages - while cutting board area, reducing the number of supply pins and lowering per-channel cost. In the analog signal chain, a quad op amp sits between sensors and converters, inside the family of amplifier ICs and linear analog ICs.
Key characteristics of the LM2902EDR2G include four amplifier circuits in one package, a maximum input offset voltage of 7000 uV, single-supply operation, and a low-power general-purpose architecture suited to instrumentation and control designs. The 14-pin SOIC footprint is a widely supported package with good thermal performance, adequate creepage and clearance for 36 V-class class parts, and compatibility with automated assembly and standard SOIC sockets.
Internally, the device uses the classic bipolar single-supply topology that has made the LM2902 family a long-lived industry standard: a differential input stage driving a push-pull output stage, with internal compensation that allows stable operation as a unity-gain buffer. Because it is a general-purpose amplifier rather than a precision or rail-to-rail part, the design engineer should treat the input common-mode range, output swing and offset as application-dependent limits rather than rail-to-rail capabilities.
Typical applications include transducer and sensor signal conditioning, active low-pass and band-pass filters, motor and actuator control loops, audio pre-amplification in consumer equipment, 4-20 mA loop instrumentation, and general microcontroller analog front ends where a quad amplifier saves board space.
When designing around this device, confirm the common-mode input range and output swing against your actual supply voltage, and keep the layout symmetrical so that thermal gradients do not create offset mismatch between the four channels. Decouple each supply pin locally with a short, low-inductance path to the ground plane, and route feedback components away from noisy digital return paths.
This page brings together the manufacturer datasheet details, a qualified drop-in alternative set with verified package compatibility, and application-specific design notes that go beyond the parameter table.
드롭인 대체품: LM2902EDR2G — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: LM2902EDR2G (동일 폼 팩터 및 풋프린트) — 차이점: Package.
LM2902ED
✅ 드롭인 ⚠️ 사양 미검증📋 참조 대체품 (카탈로그에 없음)
LM2902D
✅ 드롭인 ⚠️ 사양 미검증가격 문의
데이터시트 보기 →LM2902B
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
LM2902DG
✅ 드롭인가격 문의
데이터시트 보기 →LM2902DR
✅ 드롭인가격 문의
데이터시트 보기 →LM2902D
✅ 드롭인가격 문의
데이터시트 보기 →LM2902EDR2G 최대 정격 & 전기적 특성
| Amplifier Type | Standard (General Purpose) |
| Number of Amplifiers | 4 circuits |
| 패키지 | SOIC-14 (PDSO-14) |
| 실장 유형 | Surface Mount |
| Input Offset Voltage (Max) | 7000 uV |
| Supply Type | Single Supply |
| Device Description | Single Supply Quad Operational Amplifiers |
| Manufacturer | onsemi |
| Datasheet Page Count | 14 pages |
| Datasheet File Size | 143 KB |
LM2902EDR2G 핀 구성
| 핀 1 | OUT1 — Channel 1 output |
| 핀 2 | IN1- — Channel 1 inverting input |
| 핀 3 | IN1+ — Channel 1 non-inverting input |
| 핀 4 | GND — Ground / negative supply reference |
| 핀 5 | IN2+ — Channel 2 non-inverting input |
| 핀 6 | IN2- — Channel 2 inverting input |
| 핀 7 | OUT2 — Channel 2 output |
| 핀 8 | OUT3 — Channel 3 output |
| 핀 9 | IN3- — Channel 3 inverting input |
| 핀 10 | IN3+ — Channel 3 non-inverting input |
| 핀 11 | V+ — Positive supply input |
| 핀 12 | IN4- — Channel 4 inverting input |
| 핀 13 | IN4+ — Channel 4 non-inverting input |
| 핀 14 | OUT4 — Channel 4 output |
일반적인 애플리케이션
LM2902EDR2G 적합 용도: 6 애플리케이션s: Sensor Signal Conditioning Front End, Active Filters and Signal Processing, Industrial Process Control Loops, Audio Pre-Amplification in Consumer Equipment, Motor and Actuator Control Loops, Medical and Instrumentation Signal Paths.
Sensor Signal Conditioning Front End
The LM2902EDR2G suits sensor front ends because four general-purpose amplifiers in a single 14-SOIC package cover the entire conditioning chain: a non-inverting pre-amplifier for a thermistor or bridge sensor, an active low-pass filter to reject noise, a level-shifting stage to match a microcontroller input range, and an output buffer to drive the ADC input. With a maximum input offset voltage of 7000 uV, the stage error can be kept well below the sensor's own accuracy for most instrumentation-grade bridges, while the single-supply architecture simplifies system power. Place each feedback network close to its channel and keep the four channels thermally symmetric to avoid offset drift between channels.
추천
Active Filters and Signal Processing
Multi-stage active filters are a natural fit for the LM2902EDR2G, which provides four independent general-purpose amplifiers with a 7000 uV maximum input offset voltage in one 14-pin SOIC package. A single device can implement a two-stage low-pass or band-pass section, plus the gain stage and the buffer that drives the next block. Because the four channels share the same package and supply, the channels experience similar temperature gradients and supply ripple, which keeps inter-stage phase and gain matching predictable compared with four separate packages. Use identical resistor and capacitor networks across channels when symmetry matters, and check the stability margin for the gain and feedback values you select.
추천
Industrial Process Control Loops
In industrial process control, the LM2902EDR2G can implement a complete 4-20 mA current-loop interface: one channel buffers the transmitter input, a second amplifies the error signal, a third drives the output stage, and the fourth provides the compliance-voltage boost for the loop. The single-supply general-purpose architecture works well in 24 V-class instrumented systems where the signal sits mid-rail, and the wide availability of equivalent quad op amps from multiple manufacturers makes the design easy to second-source for long-life industrial programs. Keep input protection networks close to the pins, and verify the amplifier's input common-mode range against the loop voltage excursion you expect.
추천
Audio Pre-Amplification in Consumer Equipment
The LM2902EDR2G works as a four-channel audio pre-amplifier in consumer equipment such as small amplifiers, mixing consoles, headphone driver helpers and tone-shaping circuits. Each channel can implement a non-inverting gain stage, an active volume or tone control, a cross-mix stage and a line output buffer, all within a single 14-SOIC package. The 7000 uV maximum input offset voltage contributes negligibly to audio distortion at typical signal levels, and the four-channel package reduces both board area and the number of bypass capacitors compared with discrete single amplifiers. Keep the layout compact to minimise hum pickup, and observe the output swing limits when driving low-impedance headphone loads.
추천
Motor and Actuator Control Loops
For motor position and actuator control, the LM2902EDR2G can host the complete analog control chain: a transconductance stage that converts a position error into a drive current, a current-sense amplifier for the feedback path, a comparator-style stage for over-current detection, and a differential output stage for the actuator driver interface. The single-supply arrangement matches 12 V and 24 V actuator buses where the control signals sit around mid-rail, and the quad configuration lets one IC replace several discrete amplifiers on space-constrained control boards. Ensure the amplifier is not exposed to motor switching transients - add clamping and filtering, and keep feedback routing away from the power stage return.
추천
Medical and Instrumentation Signal Paths
Instrumentation and medical monitoring designs can use the LM2902EDR2G for low-level analog conditioning ahead of an ADC, covering amplification, filtering, offset correction and output buffering in a single 14-SOIC package. The 7000 uV maximum input offset voltage keeps the amplifier's own error small relative to the millivolt-level signals typical of bridge sensors, and the availability of equivalent parts from several manufacturers supports dual sourcing for regulated equipment programs. Follow the layout discipline expected of medical instrumentation: guard traces around high-impedance inputs, star grounding for the analog return, and isolation of sensitive nodes from switching supplies and display drivers.
추천
추천 제품 요약
엔지니어링 참조 데이터: LM2902EDR2G — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | LM2902ED | LM2902D | LM2902B | LM2902DG | LM2902DR |
|---|---|---|---|---|---|---|
| Package | SOIC-14 (PDSO-14) | SOIC-14 (PDSO-14) - same | SOIC-14 (PDSO-14) - same | SOIC-14 (DBR) - same footprint | SOIC-14 (DBR) - same footprint | SOIC-14 (SOP-14) - same footprint |
| Brand | onsemi | onsemi | onsemi | Texas Instruments | Texas Instruments | STMicroelectronics |
| Number of Amplifiers | 4 | 4 | 4 | 4 | 4 | 4 |
| Supply Type | Single Supply | Single Supply | Single Supply | Single or Dual Supply | Single or Dual Supply | Single or Dual Supply |
| Amplifier Classification | Standard (General Purpose) | General Purpose | General Purpose | General Purpose (next generation) | General Purpose | General Purpose |
| Delivery Format | Tape & Reel (R2G suffix) | Bulk / tube ordering code | Base cataloguing code | Multiple ordering options | SOIC-14 tape and reel | Tape and reel |
주요 차별점
- Four general-purpose amplifiers in one 14-pin SOIC package with a single-supply architecture (vs LM2904P3)
- Established multi-manufacturer second-source path (vs LM2902DR)
- Maximum input offset voltage of 7000 uV in a general-purpose quad (vs LM201AD)
- Single-supply general-purpose positioning versus precision or micropower families (vs MCP6043-E/P)
설계 노트
Place the LM2902EDR2G so that the four channels sit close to the sources and sinks they serve; in sensor boards this keeps feedback resistors and filter capacitors within a few millimetres of the corresponding pins and limits parasitic feedback. Provide a local bypass capacitor directly on the V+ pin with a short, low-inductance return to the ground plane, and place a second bulk capacitor near the supply entry point. Maintain a solid ground pour under the device, and keep the pin-4 ground connection free of thermal relief splits so the four channels share a low-impedance reference.
The most common design error with this quad general-purpose amplifier is assuming rail-to-rail input or output behaviour. The LM2902EDR2G operates from a single supply, so the usable input common-mode range and output swing sit inside the rail boundaries, and a signal that approaches the positive rail can saturate the output stage. Check the datasheet common-mode and output-swing curves against the actual signal and supply levels, and bias the signal mid-rail where possible. A second common error is using the same package for four unrelated channels while ignoring offset mismatching between them, which shows up as DC error in multi-stage measurement chains.
To minimise offset drift and crosstalk between the four channels, keep the thermal environment symmetric: avoid mounting a hot regulator or power stage along one edge of the package, and do not route the four channels at very different signal levels across the die. Keep feedback traces short and away from switching nodes and inductor fields, and use a single quiet ground region for the analog reference rather than sharing the return path of relays, motors or LED drivers. If a channel handles a very low-level signal while another handles a large one, separate the sensitive stage into a different package or add shielding to the sensitive input node.
Because the LM2902EDR2G is intended for general-purpose single-supply work, gain-bandwidth and slew-rate headroom are limited compared with modern rail-to-rail parts. Verify that the closed-loop gain and the highest signal frequency in your filter or control loop stay inside the amplifier's stable operating region, and add an explicit compensation network or reduce the loop gain if the design approaches instability. On fast edges from a microcontroller or DAC, place a small isolation resistor between the driving device and the amplifier input and terminate with a suitable capacitor to the ground plane.
규정 준수 정보
The onsemi ordering suffix R2G indicates a green-compliant lead-free finish, but no explicit RoHS, REACH, halogen-free or conflict-minerals statement was captured for this part number, so those fields are left as unknown. This is an analog IC rather than an automotive-qualified device, so AEC-Q100 is recorded as not applicable.
