LM2902PWRG3 - 26V Quad 1.2MHz Op Amp | Texas Instruments
料号： LM2902PWRG3 ✓ 量产中LM2902PWRG3 概述
An operational amplifier is an analog integrated circuit that uses high open-loop gain to amplify the difference between two input voltages. A quad operational amplifier combines four amplifiers in one package, allowing a design to process four signals while reducing board area and package count. The LM2902 belongs to the operational-amplifier hierarchy within analog and mixed-signal semiconductors, and its wide supply range makes it useful in industrial systems operating above conventional low-voltage analog rails.
The four channels operate from a single supply or from split supplies, allowing different system reference arrangements. Key characteristics include a 1.2 MHz gain-bandwidth product, a 0.5 V/µs slew rate, and a typical supply-current drain of 0.8 mA per amplifier. The input-offset voltage is specified at 2 mV, while the maximum operating supply voltage is 26 V. These characteristics support moderate-bandwidth signal conditioning rather than high-speed precision applications.
The LM2902 architecture provides internally frequency-compensated amplifiers, simplifying closed-loop use without an external compensation network. Each amplifier can operate as an inverter, non-inverting gain stage, comparator, buffer, or active filter element when operated within its common-mode and output-swing limits. The 14-lead TSSOP package provides a compact surface-mount format, but its narrow lead pitch requires careful PCB routing and adequate copper area for reliable assembly.
Typical uses include industrial sensor interfaces, low-frequency active filters, control-loop error amplifiers, transducer signal conditioning, and four-channel instrumentation systems. Split-supply operation is useful when signals remain bipolar around ground, while single-supply operation fits battery-powered or process-control systems where a mid-supply reference can establish the signal center point.
For reliable operation, verify the input common-mode range, output swing, supply current, and channel stability at the intended temperature before finalizing the PCB. Place bypass capacitors close to the supply pins, keep feedback components compact, and avoid routing sensitive input traces beside switching nodes or high-current output paths.
This product page combines the manufacturer device specifications with application-focused design guidance, package information, and same-family replacement analysis to support component selection, PCB planning, and sourcing decisions.
直接替换替代料： LM2902PWRG3 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LM2902KPWR
✅ 直接替换📋 参考替代料（不在目录中）
LM2902KAVQPWR
✅ 直接替换联系询价
查看数据手册 →LM2902PWRG3 最大额定值与电气特性
| Number of Amplifiers | 4 amplifiers |
| Amplifier Type | General-purpose |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 1.2 MHz |
| Input Offset Voltage | 2 mV |
| Slew Rate | 0.5 V/µs |
| Supply Current Drain | 0.8 mA typical |
| Supply Configuration | Single supply or split supply |
| 封装 | 14-pin TSSOP (PW), 4.40 mm width |
| Packaging | Tape and reel (TR) |
| 安装类型 | Surface mount |
| Lead Pitch | 0.65 mm |
| RoHS 状态 | unknown |
| REACH Status | unknown |
| AEC-Q100 Qualification | not_applicable |
LM2902PWRG3 14-pin tssop (pw), 4.40 mm width 引脚配置指南
LM2902PWRG3（14-pin tssop (pw), 4.40 mm width 封装）的引脚配置。 该模拟元件具有输入、输出和电源引脚。请参阅制造商数据手册以了解失调调零、补偿和使能引脚配置。适用于信号调理和放大器电路。
暂无详细引脚数据： LM2902PWRG3.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM2902PWRG3 适用于 6 应用s: Industrial Sensor Signal Conditioning, Low-Frequency Active Filters, Audio and Instrumentation Buffering, Control-System Error Amplification, Battery-Powered Monitoring, Transducer and Bridge Readouts.
Industrial Sensor Signal Conditioning
The LM2902PWRG3 suits four-channel industrial sensor conditioning because it combines four independent amplifiers with a 26 V maximum supply rating and 0.8 mA typical supply-current drain per channel. Place the device between low-level transducer signals and a controller input, using each channel for buffering, gain, or active filtering. Its 1.2 MHz gain-bandwidth product is more than adequate for many process-control signals, while the 0.5 V/µs slew rate supports moderate transients. Verify that each sensor voltage remains inside the input common-mode range and that the selected gain does not amplify offset error into an unacceptable system error.
推荐
Low-Frequency Active Filters
The LM2902PWRG3 can implement multiple low-frequency active-filter sections because every channel is internally frequency compensated and supports single- or split-supply operation. Its 1.2 MHz gain-bandwidth product provides useful bandwidth margin for filters centered well below the megahertz range, and the 0.5 V/µs slew rate limits large-signal distortion during transients. Four channels allow a state-variable or multi-stage filter to be consolidated into one package. Keep resistor and capacitor networks close to the corresponding pins, confirm loop-gain stability at the actual supply voltage, and check the output swing against the filter waveform.
推荐
Audio and Instrumentation Buffering
The LM2902PWRG3 provides four general-purpose amplifier channels for audio and instrumentation paths that operate at moderate bandwidth. A 1.2 MHz gain-bandwidth product is suitable for buffering many low-frequency audio sources, and the 0.5 V/µs slew rate offers a defined limit for large output transitions. Split-supply operation allows direct handling of signals centered around ground, while single-supply designs require an appropriate mid-supply reference. The 2 mV input-offset voltage should be checked against the smallest signal level, and the output must remain within the device's specified swing near either supply rail.
推荐
Control-System Error Amplification
The LM2902PWRG3 fits feedback and error-amplifier positions in industrial control systems because four independent channels can support multiple loops within one package. The 26 V maximum supply capability accommodates higher-voltage analog control sections, while single- or split-supply operation allows use with common industrial signal-reference arrangements. Its 0.5 V/µs slew rate supports ordinary control-loop corrections but not very fast saturation recovery. Confirm output-current demand, load capacitance, stability with the selected feedback network, and output swing during startup and saturation.
推荐
Battery-Powered Monitoring
The LM2902PWRG3 can support low-frequency battery-powered monitoring when each channel's 0.8 mA typical supply-current drain is acceptable for the complete four-channel package. Its internally compensated architecture simplifies analog supervision, threshold, and filtering functions that operate below the 1.2 MHz gain-bandwidth limit. A single supply can be used with a mid-supply reference for biased signals, although the input and output ranges must remain valid. For designs where every milliamp matters, compare lower-power amplifier families; the four-channel topology remains useful when board area and part count dominate.
推荐
Transducer and Bridge Readouts
The LM2902PWRG3 can amplify low-level transducer and bridge-sensor readouts when four channels are needed for excitation, sensing, filtering, or output conditioning. The 2 mV input-offset rating establishes the device's nominal offset class and must be compared with the smallest bridge imbalance that the system must resolve. Its 1.2 MHz bandwidth is more than adequate for many slow force, pressure, and position sensors, while the 0.5 V/µs slew rate handles ordinary sensor transients. Use a stable reference for single-supply operation and protect sensitive inputs from common-mode and ESD transients exceeding the device ratings.
推荐
推荐产品汇总
工程参考数据： LM2902PWRG3 ——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 | LM2902KPWR | LM2902KAVQPWR |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | TSSOP-14 (PW) | TSSOP-14 (PW) | TSSOP-14 (PW) |
| Number of Amplifiers | 4 amplifiers | 4 amplifiers | 4 amplifiers |
| Supply Configuration | Single supply or split supply | Single supply or split supply | Single supply or split supply |
| Amplifier Type | General-purpose | General-purpose | General-purpose |
关键差异点
- Four independent channels in one compact package （对比 LM2902KPWR)
- Established general-purpose electrical performance （对比 LM2902KAVQPWR)
- Matches the original TSSOP land pattern （对比 NCV2902DTBR2G)
设计说明
Route the LM2902PWRG3 power and ground connections directly to the relevant pins, place a 0.1 µF ceramic bypass capacitor close to the device, and add bulk capacitance near the supply entry point as required by the source impedance. Keep feedback resistors and compensation components close to their associated amplifier pins. The 14-pin TSSOP uses a 0.65 mm lead pitch, so inspect the completed assembly for bridging and confirm that the PCB land pattern matches the PW package drawing.
Preserve the usable signal range by checking input common-mode voltage, output swing, load current, and capacitive loading at every supply condition. In single-supply circuits, establish a stable mid-supply reference and ensure it remains inside the input range during startup. Keep sensitive input and feedback nodes compact and physically separated from switching nodes, power inductors, and motor return paths. The 1.2 MHz gain-bandwidth product is appropriate for moderate-frequency signals, not high-speed edge-heavy workloads.
Do not treat every LM2902 orderable code as an automatic substitute: package, offset, bandwidth, supply current, temperature grade, qualification, and marking can differ between order codes. Confirm that LM2902KPWR or LM2902KAVQPWR meets the complete electrical specification before replacing LM2902PWRG3. Also verify that the 26 V maximum supply rating is never interpreted as an operating target; higher rails increase stress and can exceed the device's safe operating conditions.
Estimated: four amplifiers operating at 0.8 mA each from a 5 V rail consume approximately 16 mA total, corresponding to about 80 mW of device dissipation before considering external load current. This is modest compared with the TSSOP package's thermal capability, but actual temperature rise still depends on board copper, airflow, ambient temperature, and neighboring heat sources. Use the manufacturer thermal information for final junction-temperature calculations rather than treating the estimate as a guaranteed rating.
合规信息
The general-purpose LM2902 orderable device is not identified as an AEC-Q100-qualified variant. Specific environmental and material compliance statements for LM2902PWRG3 were not located and remain unclassified.
