LM2902QDRG4Q1 - Quad 1.2MHz Op Amp | Texas Instruments
料号： LM2902QDRG4Q1 ✓ 量产中LM2902QDRG4Q1 概述
An operational amplifier is a voltage-controlled, high-gain analog building block used to amplify, buffer, compare, or sum signals. The LM2902 belongs to the broader operational-amplifier family within analog and amplifier ICs. Its four independent channels let one package provide several conditioning functions while conserving board area and simplifying power distribution in industrial, automotive, and control systems.
Key operating characteristics include four amplifier circuits, a 1.2 MHz gain-bandwidth product, a 0.5 V/µs slew rate, and an operating-temperature range from -40 °C to 125 °C. The automotive-qualified variant is identified as AEC-Q100 compliant in the product listing. Typical common-mode rejection is listed at 80 dB, while input-bias current is listed at -0.5 µA for the cited conditions.
The device uses conventional internally compensated operational-amplifier architecture. Its gain-bandwidth product determines the approximate small-signal bandwidth at a given closed-loop gain, while slew rate limits how quickly the output can follow a large voltage step. For low-frequency precision, sensing, or conditioning functions, the relatively wide common-mode-rejection specification helps reduce output offset caused by common-mode input variation.
Typical uses include industrial sensor conditioning, actuator and control-loop signal processing, automotive interface circuits, buffered analog measurement paths, and general low-frequency amplifier stages. Each channel can implement a noninverting or inverting amplifier, voltage follower, comparator-style interface, or summing function when operated within its electrical limits.
A key design consideration is supply and output-range verification. Single-supply operation is specified from a 5 V supply in the cited product information, and applications using lower or higher rails must be checked against the manufacturer datasheet. Decoupling capacitors should be placed close to the supply pins, with care taken to maintain stability in capacitive-feedback networks.
This product record combines package, electrical, environmental, and automotive attributes with verified substitute references, application guidance, and a parameter-by-parameter comparison. It is intended to accelerate component selection and PCB planning for engineers evaluating a genuine 14-SOIC quad operational amplifier.
直接替换替代料： LM2902QDRG4Q1 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： LM2902QDRG4Q1 （相同外形与封装尺寸） ——差异在于 Package, Automotive Qualification, Amplifier Type, Number of Amplifier Channels, Number of Amplifiers.
LM2902QDRQ1
✅ 直接替换联系询价
查看数据手册 →LM2902DRG4
✅ 直接替换联系询价
查看数据手册 →LM2902KVQDRQ1
✅ 直接替换联系询价
查看数据手册 →LM2902QDRG4
✅ 直接替换📋 参考替代料（不在目录中）
LM2902QDRG4Q1 最大额定值与电气特性
| Amplifier Type | General Purpose |
| Number of Circuits | 4 circuits |
| Number of Amplifiers | 4 amplifiers |
| Gain-Bandwidth Product | 1.2 MHz |
| Slew Rate | 0.5 V/µs |
| 电源电压 | 5 V |
| Input Bias Current | -0.5 µA |
| Common-Mode Rejection Ratio | 80 dB |
| 工作温度 | -40 °C to 125 °C |
| 封装 | 14-SOIC, 3.90 mm width |
| 安装类型 | Surface Mount |
| Packaging | Tape and Reel |
| Automotive Qualification | AEC-Q100 compliant |
| RoHS 状态 | Compliant |
| Human Body Model ESD | >2 kV |
| Machine Model ESD | >200 V |
| Charged Device Model ESD | 2 kV |
| Single-Supply Operation | 5 V |
LM2902QDRG4Q1 14-soic, 3.90 mm width 引脚配置指南
LM2902QDRG4Q1（14-soic, 3.90 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： LM2902QDRG4Q1.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM2902QDRG4Q1 适用于 6 应用s: Automotive Sensor Signal Conditioning, Industrial Control Signal Conditioning, Precision Analog Measurement Front End, Actuator Drive Interface, Automotive Interface Circuit, Buffering and Distribution.
Automotive Sensor Signal Conditioning
The LM2902QDRG4Q1 fits low-frequency automotive sensor interfaces because it combines four general-purpose amplifier channels, a 1.2 MHz gain-bandwidth product, and operation from -40 °C to 125 °C. According to the manufacturer datasheet, the -Q1 device is AEC-Q100 compliant and provides enhanced manufacturing sourcing. Place the device between sensor outputs and higher-level control electronics, then check common-mode voltage, output swing, and supply limits against the datasheet. Its 0.5 V/µs slew rate is appropriate for moderate-bandwidth sensing signals, while four channels can condition more than one sensor or provide buffering within one 14-SOIC package.
推荐
Industrial Control Signal Conditioning
The LM2902QDRG4Q1 is suitable for industrial control paths that amplify or buffer low-bandwidth transducer signals before conversion or processing. Its 1.2 MHz gain-bandwidth product provides useful closed-loop bandwidth for moderate-frequency control signals, while 80 dB common-mode rejection reduces output errors from common-mode input variation. According to the manufacturer datasheet, four independent channels allow the same SOIC-14 footprint to implement noninverting stages, inverters, followers, or summed functions. Validate output swing at the intended supply and place supply bypassing close to the device. The extended -40 °C to 125 °C range also permits use in temperature-controlled industrial equipment.
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Precision Analog Measurement Front End
The LM2902QDRG4Q1 can form the first amplification stage of a low-frequency analog measurement chain when the source impedance and required bandwidth are moderate. According to the manufacturer datasheet, its 80 dB common-mode rejection helps isolate small signals riding on a larger common-mode voltage, and its four channels can support buffering, differential conversion, gain, and reference conditioning. A 1.2 MHz gain-bandwidth product supports closed-loop operation below that limit at higher gains, although the exact bandwidth decreases as noise gain rises. Keep input and feedback layouts compact, avoid long high-impedance traces, and verify offset, bias-current, and common-mode limits against the manufacturer datasheet.
推荐
Actuator Drive Interface
The LM2902QDRG4Q1 is appropriate for low-frequency actuator interfaces where a control voltage must be buffered or translated into a drive command. Its 0.5 V/µs slew rate defines the available large-signal response, while the 1.2 MHz gain-bandwidth product supports substantially faster small-signal operation at low closed-loop gain. According to the manufacturer datasheet, the four-channel arrangement can buffer a command and condition feedback, reference, or monitoring signals within one package. Use a suitable output buffer when driving a capacitive or high-current load, because the output-current limit is not established in the available product listing. Check the output-voltage swing and load behavior in the manufacturer datasheet before finalizing the drive stage.
推荐
Automotive Interface Circuit
The LM2902QDRG4Q1 is designed for general-purpose automotive signal-interface tasks where four channels and a 14-SOIC footprint simplify board allocation. According to the manufacturer datasheet, it supports single-supply operation from 5 V, split-supply operation where permitted, and extended-temperature operation from -40 °C to 125 °C. The four channels can implement buffer, gain, comparison, and summing functions around low-bandwidth vehicle sensors or control signals. AEC-Q100 compliance supports automotive design review when the full ordering code and production requirements are accepted. Transient protection, grounding, and connector-level surge protection remain separate system requirements and should not be assumed to be provided by the amplifier itself.
推荐
Buffering and Distribution
The LM2902QDRG4Q1 works well when several low-frequency analog nodes need buffering or distribution without occupying four separate packages. According to the manufacturer datasheet, it contains four independent, high-gain, frequency-compensated operational amplifiers with a 1.2 MHz gain-bandwidth product. Voltage-follower connections reduce source-loading effects, while inverting and summing networks can distribute conditioned signals among downstream stages. The 0.5 V/µs slew rate is suitable for gradual control waveforms rather than high-speed edges. Keep each feedback loop compact and observe the stability guidance for capacitive loads in the manufacturer datasheet. A shared 14-SOIC footprint also simplifies pin assignment across repeated channels.
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推荐产品汇总
工程参考数据： LM2902QDRG4Q1 ——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 | LM2902QDRQ1 | LM2902DRG4 | LM2902KVQDRQ1 | LM2902QDRG4 | LM2902D |
|---|---|---|---|---|---|---|
| Package | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC | 14-SOIC |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Number of Circuits | 4 | 4 | 4 | 4 | 4 | 4 |
| Amplifier Type | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose | General Purpose |
关键差异点
- Four general-purpose channels in one automotive-qualified package （对比 LM2903DR)
- Extended automotive temperature capability （对比 LM2902DRG4)
- Automotive sourcing and qualification position （对比 LM2902D)
- Directly comparable 14-SOIC family alternative （对比 LM2902QDRQ1)
设计说明
Do not treat the 5 V supply specification as permission to bypass the complete operating range. According to the manufacturer datasheet, the LM2902-Q1 family supports single- and split-supply arrangements under specified conditions. Verify minimum supply, output swing, common-mode range, and channel-to-channel behavior at the actual rail voltage. The four channels share one package, so a supply-layout mistake can affect every amplifier simultaneously.
Place the supply-bypass capacitor immediately between the package supply pins and the ground reference. Keep input, feedback, and output traces short, especially when the source impedance is high. The 1.2 MHz gain-bandwidth product is sufficient for low-frequency conditioning but does not remove the need for disciplined analog layout. Follow the manufacturer datasheet’s recommended application circuit and decoupling guidance.
Estimate the required closed-loop bandwidth at the selected noise gain rather than using the 1.2 MHz gain-bandwidth product directly. The maximum operating frequency generally falls as closed-loop gain increases, and large signals are separately constrained by the 0.5 V/µs slew rate. For capacitive loads, use the stability guidance and isolation-resistor methods in the manufacturer datasheet rather than assuming the output can drive the load directly.
Estimate the power dissipation from the actual supply voltage, quiescent current, and load current before placing the device in a temperature-sensitive design. According to the manufacturer datasheet, the LM2902-Q1 family operates up to 125 °C, but ambient temperature and copper exposure still affect junction temperature. Use the package thermal information and the manufacturer’s maximum supply and current limits for the final thermal calculation.
合规信息
The product listing identifies the LM2902QDRG4Q1 as AEC-Q100 compliant and RoHS compliant. Reach, lead-free, halogen-free, and conflict-minerals status are not stated in the cited product information.