LM2902PWRG4 - Quad 26V 1.2MHz Op Amp | Texas Instruments
部品番号: LM2902PWRG4 ✓ 生産中LM2902PWRG4 概要
An operational amplifier is an amplifier IC that uses very high open-loop gain to amplify small differential signals while rejecting common-mode noise and voltage variation. The LM2902 family belongs to the amplifier IC hierarchy, where a quad operational amplifier combines four amplifiers in one package for applications needing several gain stages or multiple independent signal paths. The integrated quad arrangement reduces board area and simplifies system partitioning compared with four separate single or dual amplifier packages.
The device is identified as a 4-circuit, 1.2 MHz operational amplifier in a 14-TSSOP package. The LM2902 family is specified for operation from single or dual supplies, with the LM2902 supply rating listed as 26 V. The manufacturer describes the family as an industry-standard, general-purpose platform, and its product information identifies low offset voltage and common-mode input range extending to ground. These characteristics make the device suitable for DC and low-frequency signal paths that do not require the low-noise performance of a precision amplifier.
The LM2902 can be used in sensor-interface conditioning, current-voltage conversion, audio and communication signal amplification, active filtering, comparator-style thresholding, and general industrial control. Each amplifier operates independently, allowing four different signal chains to share one package. The wide supply-voltage capability is useful when the signal source operates from a higher rail than the system logic, while the common-mode input range including ground supports sensor interfaces whose signals remain near 0 V.
The primary design consideration is supply bypassing and input/output stability. Place the required bypass capacitor close to the supply pins and route high-current return paths carefully to minimize ground displacement. Inputs must remain within the specified common-mode and absolute-maximum limits. Because the LM2902 is a general-purpose amplifier rather than a precision part, offset, bias current, output swing, noise, and slew-rate requirements should be checked against the actual signal chain before precision measurements are attempted. Use the manufacturer datasheet pin-description table and recommended application circuit when assigning PCB tracks.
This page provides a practical engineering overview of the LM2902PWRG4, including package identification, functional context, application guidance, verified alternatives, and design considerations for selecting and integrating a quad high-voltage general-purpose operational amplifier.
ドロップイン代替品: LM2902PWRG4 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
LM2902PWR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM2902KVQPWR
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LM2902PWRG4 最大定格＆電気的特性
| Product Type | Quad general-purpose operational amplifier |
| Number of Amplifiers | 4 circuits |
| Supply Voltage Rating | 26 V |
| Gain-Bandwidth Product | 1.2 MHz |
| パッケージ | 14-TSSOP |
| 実装タイプ | Surface mount |
| Operating Supply Configuration | Single supply or dual supply |
| ライフサイクル状態 | Active |
LM2902PWRG4 14-tssop ピン配置ガイド
LM2902PWRG4 (14-tssop パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: LM2902PWRG4.
詳細は データシート をご参照ください。
主な用途
LM2902PWRG4 の用途: 6 件s: Industrial Sensor Signal Conditioning, Current-to-Voltage Conversion, Active Audio and Control Filters, Power-Supply Feedback and Monitoring, Communications Interface Buffering, Data Acquisition Front End.
Industrial Sensor Signal Conditioning
The LM2902PWRG4 fits four-channel industrial sensor conditioning because each section can buffer or amplify a low-level sensor signal while the common-mode input range includes ground. Its four independent amplifiers can condition current outputs, resistive sensors, and low-side voltage signals in one 14-TSSOP package. The 26 V supply rating accommodates industrial rails above conventional low-voltage op-amp limits, while the 1.2 MHz bandwidth is appropriate for many process-control signals rather than high-frequency instrumentation. Confirm sensor excitation, input range, required accuracy, output swing, and operating-temperature limits in the manufacturer datasheet.
おすすめ
Current-to-Voltage Conversion
The LM2902PWRG4 can implement current-to-voltage conversion with one of its four amplifier sections while preserving three additional amplifier channels for buffer, filter, or gain stages. Its common-mode input range including ground makes it useful with low-side current sensing and source-grounded transducers. The 1.2 MHz gain-bandwidth product provides ample closed-loop bandwidth for many slow-to-moderate-speed current measurements. Design the sense resistor for the intended current range and verify input offset, bias current, output swing, and load capability against the required measurement accuracy.
おすすめ
Active Audio and Control Filters
The LM2902PWRG4 is appropriate for basic active filtering and gain stages in audio and industrial control circuits because it provides four amplifiers and a 1.2 MHz gain-bandwidth product in one package. Multiple sections can form low-pass, high-pass, or buffering stages without requiring four separate ICs. The device's general-purpose characteristics favor economical signal conditioning rather than audiophile or precision filtering. Select external resistor and capacitor values for the target frequency and gain, then check noise, slew rate, output loading, and stability using the manufacturer application guidance.
おすすめ
Power-Supply Feedback and Monitoring
The LM2902PWRG4 can supervise and condition feedback signals in higher-voltage power-supply systems because the device supports supplies rated to 26 V and includes ground in its common-mode input range. Four channels can monitor a supply rail, amplify a remote sense line, and provide threshold or buffering functions. This use does not make the device a dedicated protection controller, so safety functions still require careful design review. Verify the maximum differential input voltage, supply limits, output-swing behavior, and fault response before connecting it to high-energy circuitry.
おすすめ
Communications Interface Buffering
The LM2902PWRG4 can provide impedance buffering and gain for moderate-speed communications interfaces because it combines four 1.2 MHz amplifier sections with a 26 V supply rating. Separate channels can buffer a receive signal, level-shift within the common-mode range, and drive another interface stage. The general-purpose architecture is suitable for industrial control links and legacy communications circuits rather than high-speed line drivers. Confirm differential-input limits, output drive, slew rate, and channel-to-channel behavior for the selected protocol and cable environment.
おすすめ
Data Acquisition Front End
The LM2902PWRG4 can form the gain and buffer stages of a moderate-speed data-acquisition front end using its four independent amplifiers. The 1.2 MHz bandwidth supports many sensor and instrumentation signals, while the common-mode range including ground is useful for signals referenced to the system ground. The device is best suited to general-purpose acquisition channels rather than precision measurements with demanding offset or noise requirements. Evaluate the complete signal chain for source impedance, settling behavior, output swing, ADC input range, and required sampling accuracy.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LM2902PWRG4 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LM2902PWR | LM2902KVQPWR |
|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 14-TSSOP | 14-TSSOP | 14-TSSOP |
| Amplifier Count | 4 circuits | 4 circuits | 4 circuits |
| Gain-Bandwidth Product | 1.2 MHz | 1.2 MHz | 1.2 MHz |
| Product Category | Standard general-purpose operational amplifier | Standard general-purpose operational amplifier | General-purpose operational amplifier |
| Order Code | LM2902PWRG4 | LM2902PWR | LM2902KVQPWR |
主な差別化要因
- Four amplifiers in one compact package （vs LM2902PWR)
- Exact approved order suffix for the target design （vs LM2902KVQPWR)
- Single-supply usability with ground included in the common-mode range （vs LM2902PWR)
設計ノート
Use the 14-TSSOP footprint rather than a 14-pin SOIC footprint. Place the manufacturer-recommended bypass capacitor beside the supply pins, provide a short ground return, and follow the package drawing for exposed-pad or lead-frame grounding. Confirm pin-one orientation against the manufacturer pin-configuration diagram before routing amplifier inputs and outputs.
Keep each amplifier's input route short and away from switching nodes and high-current return paths. When one device handles several channels, maintain consistent grounding and avoid routing a sensitive input beside another channel's output. Stable feedback-network placement is particularly important because the LM2902 is a general-purpose amplifier whose final noise and settling behavior depend on the complete gain configuration.
Do not treat the LM2902 as a rail-to-rail precision amplifier. Verify that common-mode input voltage, differential input voltage, output swing, and supply limits remain valid under worst-case conditions. The common-mode input range includes ground, but this does not guarantee rail-to-rail output operation or unlimited input range, especially near the positive supply rail.
Decouple each supply connection as shown in the manufacturer recommended application circuit and calculate the amplifier's dissipation from the actual supply voltage, output voltage, and load current. The 26 V rating defines the device limit; it is not a recommended operating margin. Use adequate copper area and keep nearby heat sources from raising the junction temperature above the device rating.
コンプライアンス情報
Compliance attributes were not confirmed in the manufacturer or distributor excerpts. The TI product information describes ESD ratings for the LM2902B versions, but those ratings should not be attributed to LM2902PWRG4 without confirming the exact ordering table.