LM2902M - Quad 26 V 1.2 MHz Operational Amplifier | onsemi
MPN： LM2902M ✓ 啟用中LM2902M 概覽
An operational amplifier is an amplifier IC that uses high open-loop gain and negative feedback to control gain accurately. A quad device integrates four amplifiers, reducing package count and simplifying layouts requiring several channels. The LM2902 family belongs to the operational-amplifier hierarchy and supports common analog functions such as signal amplification, buffering, active filtering, comparisons, transducers, and low-frequency closed-loop control.
The key headline characteristics are four amplifier circuits, a 26 V supply rating, 1.2 MHz gain-bandwidth product, 2 mV typical offset voltage, and a 14-pin SOIC package. Internal frequency compensation makes each channel suitable for many unity-gain or moderate-gain applications without an external compensation network. On-chip capacitors in each amplifier support stable operation as a general-purpose voltage-feedback amplifier.
The architecture follows the classic high-voltage, internally compensated operational-amplifier approach. Four independent amplifiers share one monolithic substrate but do not share internal signal paths. This allows the same device to implement four separate channels, such as a dual-sensor front end or two complete analog-processing chains. The verified data does not provide exact input bias current, output-current capability, slew rate, or common-mode limits, so those specifications require confirmation from the selected manufacturer's datasheet.
Typical uses include industrial sensor interfaces, low-frequency active filters, audio preamplifier stages, process-control modules, instrumentation, and general buffer or gain stages. The quad organization is particularly useful when four similar analog functions must fit on a PCB. Actual circuit suitability depends on supply voltage, source impedance, load impedance, signal frequency, output swing, stability, and thermal conditions.
For PCB design, place the device so sensitive analog inputs remain short and route outputs away from switching nodes and high-current paths. Bypass each supply connection near the package with suitable decoupling, maintain a common ground reference, and verify unused-channel inputs are biased so they do not float. The SOIC package also requires a thermal strategy when nearby circuitry drives substantial channel dissipation.
This page consolidates the verified distributor and manufacturer product information, identifies where identical MPNs come from different manufacturers, and separates confirmed LM2902M characteristics from parameters that still require manufacturer-specific datasheet review before design release.
直接替換替代品，適用於 LM2902M — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： LM2902M （相同外形與佔位） — 差異在於 Package.
此產品無可直接替換的替代品。
申請替代品LM2902M 最大額定值與電氣特性
| Product Type | Quad operational amplifier |
| Number of Amplifier Circuits | 4 circuits |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 1.2 MHz |
| Typical Input Offset Voltage | 2 mV |
| Amplifier Class | Standard general-purpose amplifier |
| Compensation | Internal frequency compensation |
| Channel Architecture | 4 independent amplifiers |
| 封裝 | 14-pin SOP |
| 安裝類型 | Surface mount |
| 工作溫度範圍 | -40 °C to +85 °C |
| Supplier Availability Listing | DigiKey result states buy now and ships today |
LM2902M 14-pin sop 腳位配置指南
LM2902M（14-pin sop 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： LM2902M.
請參閱 資料表 以查看完整腳位配置。
典型應用
LM2902M 適用於 6 應用s: Industrial Sensor Signal Conditioning, Low-Frequency Active Filters, Audio Preamplifier and Mixer Stages, Process-Control Interface Module, Instrumentation Buffering, Low-Frequency Comparator Circuits.
Industrial Sensor Signal Conditioning
LM2902M fits industrial sensor-conditioning blocks requiring four general-purpose amplifier channels on one board. Its verified 26 V maximum supply is relevant to higher-voltage industrial interfaces, while the 1.2 MHz gain-bandwidth product covers many low- and moderate-bandwidth transducer signals. Four channels can amplify, scale, and buffer sensor outputs without using four separate amplifier packages. Place each input path close to its source, reference a clean analog ground, and avoid routing high-current switching traces beside sensitive inputs. Because input bias current, common-mode range, output swing, and exact slew rate are not supplied, validate those limits for the selected manufacturer before defining sensor excitation, gain, and loading.
推薦
Low-Frequency Active Filters
The four internally compensated channels in LM2902M can implement cascaded or parallel low-frequency active-filter stages such as low-pass, high-pass, and notch sections. The verified 1.2 MHz gain-bandwidth product provides useful bandwidth for low-frequency conditioning, while integrating four circuits reduces package count and keeps related analog stages together. Filter design must account for the exact open-loop response, closed-loop noise gain, gain-bandwidth behavior, output loading, and component tolerances. Check phase margin in simulation and test the completed board with the intended source impedance. The missing slew-rate and output-swing values must be obtained from the selected source datasheet before selecting amplitudes and cutoff slopes.
推薦
Audio Preamplifier and Mixer Stages
LM2902M can provide multiple preamplifier or summing-amplifier sections in a low-frequency audio board. The verified 26 V class of supply capability supports dual-rail-style headroom when operated within the exact manufacturer limits, and the 1.2 MHz gain-bandwidth product is generally well above the audio band. Four channels allow a compact design for source conditioning, gain staging, or balanced input sections. Keep input and feedback impedances high enough to avoid loading the preceding stage, observe the selected manufacturer's input bias and offset limits, and verify output swing against peak signal levels. Supply bypassing and quiet ground routing are essential because four audio stages sharing one package can exchange noise and heat.
推薦
Process-Control Interface Module
LM2902M is applicable to process-control modules that condition pressure, level, temperature, or analog-current signals across several channels. The four-circuit architecture reduces board area in PLC, transmitter, and data-acquisition interfaces, while the 26 V maximum supply offers useful compatibility with industrial signal ranges. Each channel can serve a buffer, amplifier, comparator, or active-filter function. Robust design requires input protection, accurate grounding, stable references, and compliance with the module's isolation strategy. Verify common-mode input voltage, differential input handling, output swing, and supply-current behavior because those values are not present in the verified search data. Do not assume a particular channel may reach either supply rail.
推薦
Instrumentation Buffering
LM2902M can implement four unity-gain buffers around sensor, reference, or test-instrumentation nodes. Internal frequency compensation supports general closed-loop buffering, and the quad organization minimizes package count when several isolated analog paths require similar conditioning. Buffer performance depends on source and load impedance, input bias current, offset voltage, output swing, and stability with capacitive loading. The verified value of 2 mV typical offset is a useful baseline but does not establish worst-case accuracy. For precision instrumentation, compare the maximum offset, temperature coefficient, input-current error, and long-term stability from the exact manufacturer datasheet before treating these buffers as high-accuracy devices.
推薦
Low-Frequency Comparator Circuits
LM2902M can provide open-loop comparison functions for slow analog control and protection signals when operated from a suitable single or dual supply. Four amplifier channels allow multiple threshold comparisons without four packages, although noise, propagation delay, input offset, and output behavior must be included in threshold design. The verified 1.2 MHz gain-bandwidth product supports general-purpose amplification but does not by itself specify comparator response time. Add input filtering or hysteresis as appropriate, verify logic-level compatibility, and confirm output high and low voltage margins. The selected manufacturer's common-mode range and output-drive specifications must be checked because they are absent from the supplied data.
推薦
工程參考資料，適用於 LM2902M — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 |
|---|---|
| Package | 14-pin SOP |
| Brand | onsemi |
| Amplifier Circuits | 4 circuits |
| Maximum Supply Voltage | 26 V |
| Gain-Bandwidth Product | 1.2 MHz |
| Typical Input Offset Voltage | 2 mV |
| Operating Temperature | -40 °C to +85 °C |
| Compensation | Internal frequency compensation |
| Mounting Type | Surface mount |
主要差異化特點
- Four integrated amplifier channels (對比LM2902M/NOPB)
- Family-level bandwidth and offset values (對比onsemi LM2902M)
- Ordering-code clarity (對比Texas Instruments LM2902M/NOPB)
設計說明
Place LM2902M close to the circuits using its four channels and keep each non-inverting input and feedback path short. Sensitive analog traces should avoid switching-node copper, inductors, high-current returns, and connectors that can inject noise. Use a continuous ground reference where possible, because splitting analog and power-current paths without a deliberate ground strategy can create larger offsets than the verified 2 mV typical input offset.
Decouple the supply pins locally and follow the selected manufacturer datasheet for capacitance, ESR, and stability requirements. The verified family-level maximum is 26 V, but LM2902M is cataloged by several manufacturers whose exact operating ranges and conditions may differ. Do not substitute a nominally similar LM324 family part without checking supply voltage, common-mode input range, output swing, input bias current, and load-drive limits for the full production temperature range.
Do not leave an unused amplifier input floating. Bias each unused channel into its valid operating region and avoid configurations that make the output contend with a large external voltage. Also confirm that capacitive loading, output swing, and source resistance remain compatible with the selected manufacturer's stability requirements. These checks are necessary because the supplied data does not provide slew rate, output-current capability, or maximum capacitive load.
Estimate worst-case dissipation from the selected datasheet's supply current and output current after those parameters are verified. Because four amplifiers share one 14-pin package, aggregate channel loading can raise the package temperature even when each channel appears modest. Preserve copper around the device, avoid placing it beside a major heat source without airflow analysis, and qualify the board across maximum ambient temperature and the actual worst-case signal load.
合規資訊
The supplied search snippets do not provide manufacturer-specific environmental or material-compliance declarations for onsemi LM2902M. Values remain unknown rather than assumed.
