LM2902T14-13 - Quad 1.3MHz Op Amp, 14-TSSOP | Diodes Inc.
料号： LM2902T14-13 ✓ 量产中LM2902T14-13 概述
An operational amplifier, or op amp, is a high-gain analog building block used to amplify, buffer, compare, filter, and shape voltage signals. The quad configuration places four amplifiers in one package, reducing board area compared with four separate single or dual amplifier packages. The LM2902 family is therefore useful where designers need multiple general-purpose analog channels with consistent operation in a compact surface-mount footprint.
The principal performance characteristics are a 1.3 MHz gain-bandwidth product, 100 dB open-loop gain, and 375 uA supply current. The 14-TSSOP package has a stated width of 4.40 mm and is suitable for compact, surface-mounted PCB designs. Its four-channel architecture is particularly useful for sensor conditioning, multi-axis signal processing, analog measurement systems, and general buffer or amplifier networks.
The LM2902T14-13 operates as a voltage-feedback amplifier, allowing feedback networks to establish gain, filtering, and signal-shaping behavior. The 1.3 MHz gain-bandwidth product supports moderate-bandwidth closed-loop operations rather than high-speed signal chains. Its 100 dB open-loop gain provides high loop gain, while the low 375 uA supply current suits battery-operated and low-power equipment when system-level power consumption is a priority.
Typical uses include four-channel sensor interfaces, low-frequency active filters, differential signal conditioning, transducers requiring multiple buffers, instrumentation amplifiers using several amplifier stages, and general-purpose analog control boards. The quad organization also reduces component count and simplifies PCB routing when several independent amplifier functions are required.
A critical design consideration is maintaining adequate output swing and common-mode range for the signal being amplified. Feedback components should be selected to keep closed-loop bandwidth, offset error, and output loading within acceptable limits. Decoupling capacitors must be placed close to the supply pins to reduce supply-noise coupling into the amplifier.
This product page organizes the LM2902T14-13 technical characteristics, package information, application guidance, and verified source links into a practical engineering reference for general-purpose analog design.
直接替换替代料： LM2902T14-13 ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料LM2902T14-13 最大额定值与电气特性
| Amplifier Type | General-purpose operational amplifier |
| Number of Circuits | 4 circuits |
| Number of Amplifiers | 4 amplifiers |
| Gain-Bandwidth Product | 1.3 MHz |
| Open-Loop Gain | 100 dB |
| 电源电流 | 375 uA |
| 封装 | 14-pin TSSOP |
| Package Width | 4.40 mm |
| 安装类型 | Surface mount |
| Product Family | LM2902 |
LM2902T14-13 4.40 mm 引脚配置指南
LM2902T14-13（4.40 mm 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： LM2902T14-13.
请参阅 数据手册 以查看完整引脚配置。
典型应用
LM2902T14-13 适用于 6 应用s: Multichannel Sensor Conditioning, Low-Power Data Acquisition, Active Audio Filters, Industrial Control Signal Shaping, Precision Voltage Buffering, Portable Instrument Amplification.
Multichannel Sensor Conditioning
The LM2902T14-13 fits multichannel sensor-conditioning boards because it provides four independent general-purpose amplifiers in one 14-pin TSSOP package. The 1.3 MHz gain-bandwidth product accommodates low-bandwidth resistive, capacitive, and low-voltage sensor signals, while 375 uA supply current supports power-constrained portable instrumentation. Each channel can implement buffering, non-inverting gain, active filtering, or level conditioning using external feedback components. A practical design places the amplifier close to the sensor interface, uses short signal paths, and avoids routing high-current digital or switching signals beneath the analog inputs. The four-channel architecture reduces package count and PCB area while preserving consistent amplifier performance across multiple measurement channels.
推荐
Low-Power Data Acquisition
The LM2902T14-13 is appropriate for compact data-acquisition front ends that need several buffering or gain stages without introducing a high-power amplifier. Four amplifiers can condition inputs from resistive dividers, thermocouple interfaces, pressure sensors, or low-current transducers before conversion and processing. The 1.3 MHz gain-bandwidth product is well matched to slow sensor signals, and the 375 uA supply current helps preserve battery life in field instruments. Decouple each supply connection locally, keep feedback resistors close to their associated pins, and maintain the analog return path away from switching converters and digital clock lines.
推荐
Active Audio Filters
The LM2902T14-13 can implement low-frequency active filtering and channel equalization in audio boards using its four amplifier channels. Its 1.3 MHz gain-bandwidth product provides ample closed-loop bandwidth for common audio-band filter stages, while the 100 dB open-loop gain supports stable operation with conventional negative-feedback networks. A quad package allows four filters or gain stages to be placed in one compact footprint, reducing assembly cost compared with separate amplifier packages. Keep the input and feedback impedances within the recommended operating range, provide local supply bypassing, and maintain adequate output swing so the filter does not clip during program-level peaks.
推荐
Industrial Control Signal Shaping
The LM2902T14-13 fits industrial control boards that require multiple buffered reference, feedback, or sensed-control signals. Its four amplifiers may condition outputs from transducers, generate scaled control voltages, amplify error signals, or drive ADC inputs within the system’s permitted range. The 375 uA supply current is valuable in distributed instrumentation, while the 14-pin TSSOP supports compact controller modules. Designers should account for the amplifier’s input and output voltage limits, verify common-mode headroom under worst-case supply conditions, and isolate switching nodes from sensitive analog traces using careful grounding and layout practices.
推荐
Precision Voltage Buffering
The LM2902T14-13 can buffer voltage references and high-impedance sensor outputs when the required signal bandwidth is moderate. Four channels allow one package to serve reference isolation, voltage following, gain trimming, and output isolation. Its 100 dB open-loop gain helps reduce closed-loop error when driving moderate loads, and the 1.3 MHz gain-bandwidth product is sufficient for low-frequency precision applications. Keep input bias-current effects in mind with very high source impedances, use resistor values low enough to preserve required accuracy, and place decoupling capacitors adjacent to the supply pins to minimize disturbance from the surrounding analog system.
推荐
Portable Instrument Amplification
The LM2902T14-13 is useful in portable instrumentation requiring several general-purpose amplification channels while keeping supply consumption modest. Four channels can support current-to-voltage conversion, instrumentation stages, excitation buffering, or diagnostic signal paths in a compact circuit. The 375 uA operating current is particularly relevant for battery-powered probes and field meters, while the 14-pin TSSOP footprint reduces board area. Validate input offset, bias current, noise behavior, and output capability for the selected feedback network, because the nominal gain-bandwidth and open-loop gain values alone do not determine final precision.
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推荐产品汇总
工程参考数据： LM2902T14-13 ——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 |
|---|---|
| Brand | Diodes Incorporated |
| Package | 14-pin TSSOP, 4.40 mm width |
| Number of Amplifiers | 4 amplifiers |
| Amplifier Type | General-purpose operational amplifier |
| Gain-Bandwidth Product | 1.3 MHz |
| Open-Loop Gain | 100 dB |
| Supply Current | 375 uA |
| Mounting Type | Surface mount |
| Typical Application | Low-power multichannel analog signal conditioning |
设计说明
Place the input, output, feedback, and supply connections to minimize sensitive-node exposure. Keep feedback resistors close to their associated amplifier pins, route analog inputs away from switching-node copper, and place the supply bypass capacitor immediately between the supply and ground pins. For the 14-pin TSSOP, verify land pattern dimensions against the package drawing rather than relying solely on a generic TSSOP footprint.
Design the supply rail around the 375 uA nominal supply current while allowing additional load current from external feedback networks and driven outputs. Check the complete operating range rather than only the nominal point. Use local decoupling to suppress supply ripple, and confirm that the selected supply voltage remains within the amplifier’s allowed input range for every operating condition.
Do not assume that every LM2902-family order code is footprint- or pin-compatible. Confirm the 14-pin TSSOP package, exposed or no-connect positions, amplifier input assignments, temperature grade, and electrical limits in the datasheet. A device in a 14-pin SOIC or other package may require a different footprint even when its amplifier functions and headline specifications appear similar.
Keep high-impedance nodes as short as practical and protect them from moisture, contamination, and nearby switching signals. Use appropriately valued feedback resistors to limit the bandwidth and control sensitivity to parasitic capacitance. When driving a following stage, include an isolation resistor where appropriate to preserve amplifier stability and prevent capacitive loading from degrading phase margin.
合规信息
No explicit RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals statement is included in the product information. Confirm current compliance documents with Diodes Incorporated before release for regulated applications.
