LM2902PWRG4 - Quad 26V 1.2MHz Op Amp | Texas Instruments
MPN: LM2902PWRG4 ✓ Hoạt độngLM2902PWRG4 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho LM2902PWRG4 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
LM2902PWR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LM2902KVQPWR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
LM2902PWRG4 Tỷ lệ tối đa & tính chất điện
| Product Type | Quad general-purpose operational amplifier |
| Number of Amplifiers | 4 circuits |
| Supply Voltage Rating | 26 V |
| Gain-Bandwidth Product | 1.2 MHz |
| Hộp | 14-TSSOP |
| Kiểu lắp đặt | Surface mount |
| Operating Supply Configuration | Single supply or dual supply |
| Trạng thái vòng đời | Active |
Hướng dẫn cấu hình chân LM2902PWRG4 14-tssop
Cấu hình chân cho LM2902PWRG4 (14-tssop 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 LM2902PWRG4.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
LM2902PWRG4 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho LM2902PWRG4 — 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 | 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 |
Bảo phân biệt quan trọng
- Four amplifiers in one compact package (vsLM2902PWR)
- Exact approved order suffix for the target design (vsLM2902KVQPWR)
- Single-supply usability with ground included in the common-mode range (vsLM2902PWR)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.