LM2902VDR2 - Quad 26V Op Amp in SOIC-14 | onsemi
料号： LM2902VDR2 ✗ 停产LM2902VDR2 概述
An operational amplifier is a high-gain, differential-input amplifier whose external feedback network determines the closed-loop gain and signal behavior. The quad LM2902 family places four amplifiers in one package, reducing component count and simplifying layouts requiring several low-cost, general-purpose amplification channels. It is a voltage-feedback amplifier intended for tasks such as signal amplification, impedance buffering, active filtering, differential sensing, and basic analog control.
Key characteristics include four amplifiers in one package, a 3 V to 26 V supply range, approximately 1.2 MHz gain-bandwidth product, and approximately 2 mV input offset voltage. The 14-pin SOIC format supports conventional surface-mount assembly and provides a practical option for through-hole-compatible board layouts. Because the device is a general-purpose amplifier rather than a precision or high-speed part, its performance should be evaluated against noise, offset, slew rate, output-current capability, input-bias current, and stability requirements in the target circuit.
The four internal channels share common supply pins but otherwise provide independent amplifier inputs and outputs. This makes the LM2902VDR2 especially useful where several channels perform related low-frequency tasks, such as sensing and actuator conditioning, instrumentation buffering, or active-filter stages. Designers should avoid assuming that all analog functions can safely drive heavy loads, particularly when operating near the supply rails.
For stable operation, follow the manufacturer datasheet for input and output voltage limits, common-mode behavior, output swing, load capability, compensation requirements, and bypass-capacitor recommendations. Power-supply bypassing should be placed close to the supply pins, while input and feedback components should be positioned to minimize parasitic coupling and preserve the intended gain bandwidth.
Typical uses include industrial sensor interfaces, audio and communications signal conditioning, active filters, data-acquisition front ends, and embedded control systems. This page organizes the LM2902VDR2 specifications, verified source links, package information, practical design guidance, and verified drop-in alternatives into one engineering-oriented resource for component selection and PCB planning.
直接替换替代料： LM2902VDR2 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LM2902VDR2 （相同外形与封装尺寸） ——差异在于 Amplifier Type, Gain-Bandwidth Product, Supply Voltage Range.
LM2902VDG
✅ 直接替换📋 参考替代料（不在目录中）
LM2902VDR2 最大额定值与电气特性
| Amplifier Type | General-purpose quad operational amplifier |
| Number of Channels | 4 channels |
| Supply Configuration | Single supply |
| Supply Voltage Range | 3 V to 26 V |
| Gain-Bandwidth Product | 1.2 MHz |
| Input Offset Voltage | 2 mV |
| Package Type | 14-pin SOIC |
| 引脚数 | 14 pins |
| 安装类型 | Surface mount |
LM2902VDR2 引脚配置
| 引脚 1 | OUT1 — Amplifier 1 output |
| 引脚 2 | IN1- — Amplifier 1 inverting input |
| 引脚 3 | IN1+ — Amplifier 1 non-inverting input |
| 引脚 4 | V- — Negative supply or ground connection |
| 引脚 5 | IN2+ — Amplifier 2 non-inverting input |
| 引脚 6 | IN2- — Amplifier 2 inverting input |
| 引脚 7 | OUT2 — Amplifier 2 output |
| 引脚 8 | OUT3 — Amplifier 3 output |
| 引脚 9 | IN3- — Amplifier 3 inverting input |
| 引脚 10 | IN3+ — Amplifier 3 non-inverting input |
| 引脚 11 | V+ — Positive supply connection |
| 引脚 12 | IN4+ — Amplifier 4 non-inverting input |
| 引脚 13 | IN4- — Amplifier 4 inverting input |
| 引脚 14 | OUT4 — Amplifier 4 output |
典型应用
LM2902VDR2 适用于 6 应用s: Industrial Sensor Signal Conditioning, Active Filtering and Signal Conditioning, Data Acquisition Front End, Audio and Communications Conditioning, Embedded Control and Actuator Interface, Test and Measurement Buffering.
Industrial Sensor Signal Conditioning
The LM2902VDR2 is suitable for buffering and scaling signals from industrial sensors when the design requires four general-purpose amplifier channels and a listed 3 V to 26 V supply range. Its approximately 1.2 MHz gain-bandwidth product is adequate for many low-frequency process-control signals, while the approximately 2 mV input offset should be checked against the sensor resolution. Each channel can provide impedance isolation or closed-loop amplification around the sensor, reducing loading on the transducer. The onsemi manufacturer datasheet remains essential for confirming input common-mode range, output swing, bias-current effects, and stability with the selected sensor impedance.
推荐
Active Filtering and Signal Conditioning
The four internal amplifiers in the LM2902VDR2 can implement active-filter stages without requiring four separate packages, making it useful for modest-bandwidth measurement and control systems. Its listed 1.2 MHz gain-bandwidth product provides useful loop bandwidth for audio-range and low-frequency industrial signals. Component tolerances, noise, and the op amp's gain-bandwidth interaction determine the achievable filter response. Keep each filter section close to its resistor and capacitor network, and verify stability with the onsemi manufacturer datasheet before handling high-Q stages or demanding source and load impedances.
推荐
Data Acquisition Front End
The LM2902VDR2 can provide input buffering, channel scaling, and level shifting ahead of an ADC in a low-cost data-acquisition design. Four independent amplifier channels allow several analog inputs to share one IC, while the 3 V to 26 V supply range accommodates common embedded rails. The approximately 2 mV offset can create a meaningful conversion error for high-resolution measurements, so the system should include offset calibration or choose a lower-offset amplifier when necessary. The manufacturer datasheet should define the usable input range, output swing, settling behavior, and decoupling requirements.
推荐
Audio and Communications Conditioning
The LM2902VDR2 is appropriate for general-purpose audio or communications signal-conditioning paths that do not require low-noise or high-speed performance beyond the listed approximately 1.2 MHz gain-bandwidth product. Its four channels can perform input buffering, gain adjustment, active gain control, or output-interface functions. Designers must observe the output-voltage swing and load limitations, particularly for headphone-like loads, because this is a general-purpose amplifier rather than a dedicated audio output device. Place bypass capacitors near the supply pins and use short feedback paths to reduce distortion and susceptibility to interference.
推荐
Embedded Control and Actuator Interface
The LM2902VDR2 can provide analog gain and buffering between an embedded controller and low-power actuator or sensor interfaces. Four channels provide a practical way to scale multiple control signals while operating from the same supply as common embedded systems. The 3 V minimum supply supports lower-voltage designs, and the 14-pin SOIC is easy to route on conventional mixed-signal boards. Output-current limits must be checked before driving relays, valves, or other actuators directly; use an appropriate driver when the load exceeds the amplifier's capability. The onsemi manufacturer datasheet defines the safe output load and common-mode limits.
推荐
Test and Measurement Buffering
The LM2902VDR2 can buffer sensor outputs, reference nodes, and low-current test points in general-purpose instrumentation. Its four channels allow multiple measurements to be isolated without loading the source, while the 3 V to 26 V supply range supports laboratory and industrial rails. Measurement accuracy still depends on input bias current, offset, drift, noise, and output loading, so these characteristics must be reviewed for precision test equipment. Use short PCB traces, clean grounding, and stable bypass capacitors, and ensure every measured node remains within the datasheet input common-mode range.
推荐
推荐产品汇总
工程参考数据： LM2902VDR2 ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | LM2902VDG | LM2902DT | LM2902DR |
|---|---|---|---|---|
| Brand | onsemi | onsemi | onsemi | Texas Instruments |
| Package | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC | 14-pin SOIC |
| Amplifier Channels | 4 | 4 | 4 | 4 |
| Supply Configuration | Single supply | Single supply | Single supply | Single supply |
关键差异点
- Four general-purpose amplifier channels in one 14-pin SOIC （对比 LM2902DR)
- Direct same-manufacturer ordering variants （对比 LM2902DT)
- Closest onsemi suffix-level alternative （对比 LM2902VDG)
设计说明
Place the supply-bypass network immediately adjacent to pins 11 and 4, with the shortest possible ground return. The four amplifier channels share these supply connections, so additional trace length can couple supply impedance into every output. Keep input, feedback, and compensation components close to their associated pins, and avoid routing high-current or switching-node traces beneath the SOIC footprint.
Estimate total dissipation from the average supply current across all four channels, the supply voltage, and the fraction of time each channel operates at that current. Use the onsemi manufacturer datasheet supply-current characteristic and thermal information for the calculation. Because the SOIC has limited heat-spreading capability, verify the worst-case ambient temperature and adjacent-board copper before allowing continuous operation near maximum output loading.
Do not assume that all input and output voltages are acceptable at every supply level. Check the input common-mode range, output swing, output-current limit, and differential-input limits in the manufacturer datasheet. In single-supply systems, bias the signal into the usable input range, and account for the approximately 2 mV input offset when high-resolution measurements are required.
For AC feedback networks, keep component loops compact and use low-capacitance PCB routing to limit parasitic capacitance that can reduce stability margin. Avoid long exposed inputs and use grounded guard or shielding techniques for very high-impedance sources. Verify closed-loop gain and phase margin using the datasheet's stability guidance, particularly for capacitive loads, high gain, or source impedances close to the amplifier input resistance.
合规信息
The catalog snippets do not state the exact ordering code's RoHS, REACH, lead-free, halogen-free, or conflict-minerals status. AEC-Q100 is not applicable to the identified general-purpose commercial amplifier category, but this does not substitute for an exact manufacturer compliance declaration.