LM2904S-13 - Dual 1.1MHz Op Amp, 100dB Gain | Diodes
料号： LM2904S-13 ✓ 量产中LM2904S-13 概述
An operational amplifier is a high-gain, differential-input analog amplification component used to compare or amplify voltage signals. Within the electronics hierarchy, the LM2904 belongs to the operational-amplifier family, which sits within analog amplifier ICs and broader semiconductor signal-conditioning products. Its two-channel configuration allows one device to implement two related analog functions while reducing the number of components required on a circuit board.
The manufacturer datasheet identifies the LM2902 and LM2904 series as low-input-offset-voltage amplifiers designed for single power-supply operation over a wide voltage range, with split-supply operation also possible. The operating-temperature characterization extends from -40°C to +125°C. The standard green mold compound, industry-standard pinout, and SO-8 packaging support use in conventional industrial, instrumentation, control, and signal-conditioning equipment.
The 1.1 MHz gain bandwidth product makes the device appropriate for low-frequency amplification rather than high-speed signal processing. Its 100 dB open-loop gain provides substantial nominal gain before feedback and saturation limits are considered. The 20 nA input bias-current listing is also relevant when the source impedance is high, because bias-current error can become significant relative to the input voltage being measured.
Typical uses include transducer-signal conditioning, feedback networks in control systems, active filtering, sensor amplification, and general-purpose analog signal conditioning. Two amplifiers in one package are useful when a design needs an inverting stage and a non-inverting stage, two sensor channels, or an amplifier paired with a comparator-like buffer function.
Designers should verify input common-mode range, output swing, output-current capability, offset voltage, and supply-current limits in the manufacturer datasheet before finalizing a new board. Decoupling capacitors should be placed close to the supply pins, and unused amplifier inputs must be biased so that both output stages remain in a defined operating state.
This product page combines the manufacturer family data with practical application guidance, a same-package family alternative, and engineering-focused selection criteria. It is intended to help engineers determine whether the LM2904S-13 is appropriate for a low-frequency, dual-amplifier design before moving to detailed electrical verification and PCB implementation.
直接替换替代料： LM2904S-13 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
LM2904S
✅ 直接替换📋 参考替代料（不在目录中）
LM2904S-13 最大额定值与电气特性
| Amplifier Type | Dual general-purpose operational amplifier |
| Number of Channels | 2 circuits |
| Gain Bandwidth Product | 1.1 MHz |
| Open-Loop Gain | 100 dB |
| Input Bias Current | 20 nA |
| Gain-Bandwidth Description | 700 kHz operational-amplifier bandwidth listing |
| Supply Type | Single supply or split supply |
| 工作温度范围 | -40°C to +125°C |
| 封装 | 8-pin SO package |
| 安装类型 | Surface mount |
| Mold Compound | Green mold compound |
LM2904S-13 8-pin so package 引脚配置指南
LM2904S-13（8-pin so package 封装）的引脚配置。 该功率器件具有栅极、漏极和源极端子。对于无极性封装，请参阅制造商数据手册以了解确切的引脚 1 方向和封装尺寸细节。常见应用包括电源设计、电机驱动和负载开关。
暂无详细引脚数据： LM2904S-13.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM2904S-13 适用于 6 应用s: Industrial Sensor Signal Conditioning, Active Audio and Control Filtering, Transducer Bridge Excitation, Process Control Feedback Networks, Data Acquisition Buffering, General-Purpose Analog Signal Conditioning.
Industrial Sensor Signal Conditioning
The LM2904S-13 fits low-frequency sensor conditioning because it combines two independent channels, 100 dB open-loop gain, and 20 nA input bias current in an 8-pin SO package. Each channel can amplify a sensor output before conversion or provide the gain stage in an active filter. According to the manufacturer datasheet, the family supports single or split supplies and operation from -40°C to +125°C. Confirm that the sensor output remains inside the amplifier input common-mode range and that the required gain can be achieved at the usable bandwidth.
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Active Audio and Control Filtering
The dual LM2904S-13 can implement two linked analog filter sections or a gain stage followed by an active feedback network. Its listed 1.1 MHz gain bandwidth product is appropriate for low-frequency audio, process-control, and instrumentation bandwidths rather than high-speed waveform work. The manufacturer describes the LM2902/LM2904 series as low-input-offset-voltage amplifiers, while the distributor listing identifies 100 dB open-loop gain. Confirm output swing, load capability, and stability with the selected external resistor and capacitor values.
推荐
Transducer Bridge Excitation
Two channels in the LM2904S-13 can amplify outputs from a resistive bridge or other differential transducer when the excitation and return signals fit the amplifier input range. The 100 dB open-loop gain supports high closed-loop gain when feedback resistors define the operating mode, and the 20 nA input bias-current specification helps assess high-impedance sensor errors. According to the manufacturer datasheet, the device supports single-supply and split-supply operation over a -40°C to +125°C characterized range.
推荐
Process Control Feedback Networks
The LM2904S-13 is suitable for error-amplifier and feedback stages in slow industrial control loops. Two channels allow a forward-path amplifier and a feedback or monitoring amplifier to share one package, reducing board area compared with two separate single amplifiers. The 1.1 MHz gain bandwidth product is ample for many temperature, pressure, and level loops, while the -40°C to +125°C characterization supports harsh operating environments. Validate phase margin, common-mode range, and output saturation for the final compensation network.
推荐
Data Acquisition Buffering
The LM2904S-13 can buffer sensor outputs before routing them into a higher-impedance acquisition chain or multiplexer. Its two channels allow adjacent signals to be conditioned consistently, while the 100 dB open-loop gain provides useful margin for closed-loop voltage-follower operation. The 20 nA input bias current is particularly relevant when source impedance is high enough to create appreciable offset. Check the source impedance, input bias-current error, common-mode voltage, output drive, and acquisition settling requirements.
推荐
General-Purpose Analog Signal Conditioning
The LM2904S-13 works as a general-purpose gain, summing, or impedance-conversion stage in laboratory and industrial electronics. Its low-frequency 1.1 MHz gain bandwidth product and 100 dB nominal open-loop gain support conventional feedback designs without the complexity of a high-speed operational amplifier. The manufacturer identifies industry-standard pinouts and green mold compound for the LM2904 family, making the device a practical choice for compact dual-stage analog boards. Validate each channel’s operating region and unused-input biasing in the final schematic.
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推荐产品汇总
工程参考数据： LM2904S-13 ——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 | LM2904S |
|---|---|---|
| Package | 8-pin SO package | 8-pin SO package |
| Brand | Diodes Incorporated | Diodes Incorporated |
| Amplifier Configuration | Dual, 2 circuits | Dual, 2 circuits |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C family range |
| Supply Support | Single supply or split supply | Single supply or split supply family support |
| Mold Compound | Green mold compound | Green mold compound family construction |
关键差异点
- Two amplifiers share one compact SO-8 package （对比 LM2904S)
- Gain bandwidth product suited to general-purpose low-frequency analog work （对比 LM2904S)
- Wide characterized temperature range （对比 LM2904S)
设计说明
Place the power-supply decoupling capacitor close to the LM2904S-13 supply pins and connect the ground return directly to the device ground pin. Keep the external feedback components and input components adjacent to their corresponding amplifier pins to minimize parasitic capacitance and feedback-loop length. Because the manufacturer describes industry-standard pinouts, verify the exact SO-8 symbol and pin numbering against the current package drawing before releasing the PCB.
Do not allow either input to float. An unused amplifier channel should have its non-inverting input tied to a defined reference potential, usually ground or another valid common-mode voltage, while preserving the feedback connection. Also verify the input common-mode range and output swing for the actual supply voltage; operation at a nominal rail does not guarantee linear output behavior near the limits.
The listed 1.1 MHz gain bandwidth product limits the useful closed-loop bandwidth and phase margin at higher gains. Avoid treating the 100 dB open-loop gain as a usable closed-loop gain without checking the amplifier's gain-bandwidth behavior, load, and feedback network. Keep sensor traces away from noisy switching nodes and use a quiet ground path to avoid converting common-mode disturbances into output errors.
合规信息
The manufacturer datasheet states that the LM2902/LM2904 series uses green mold compound as standard, but no explicit RoHS, REACH, lead-free, halogen-free, conflict-minerals, or AEC-Q100 declaration was identified. The schema field name is retained as specified; its status remains unknown.
