LMP8640HV
- Typical Values, TA = 25°C
- High Common-Mode Voltage Range
- LMP8640: –2 V to 42 V
- LMP8640-Q1: –2 V to 42 V, AEC-Q100
- LMP8640HV: –2 V to 76 V
- Supply Voltage Range: 2.7 V to 12 V
- Gain Options: 20 V/V; 50 V/V; 100 V/V
- Max Gain Error: 0.25%
- Low Offset Voltage: 900 µV
- Input Bias Current: 13 µA
- PSRR: 85 dB
- CMRR (2.1V to 42V): 103 dB
- Temperature Range: –40°C to 125°C
- 6-Pin Thin SOT-23 Package
The LMP8640, LMP8640-Q1 and the LMP8640HV are precision current sense amplifiers that detect small differential voltages across a sense resistor in the presence of high input common mode voltages with a supply voltage range from 2.7 V to 12 V.
The LMP8640 and LMP8640-Q1 accept input signals with common mode voltage range from –2 V to 42 V, while the LMP8640HV accepts input signal with common mode voltage range from –2 V to 76 V. The LMP8640 and LMP8640HV have fixed gain for applications that demand accuracy over temperature. The LMP8640 and LMP8640HV come out with three different fixed gains 20 V/V, 50 V/V, 100 V/V ensuring a gain accuracy as low as 0.25%. The output is buffered in order to provide low output impedance. This high side current sense amplifier is ideal for sensing and monitoring currents in DC or battery powered systems, excellent AC and DC specifications over temperature, and keeps errors in the current sense loop to a minimum. The LMP8640 and LMP8640HV are ideal choice for industrial and consumer applications, while the LMP8640-Q1 is an AEC-Q100 grade 1 qualified version of the LMP8640 for automotive applications. The LMP8640-x is available in SOT-23-6 package.
技术文档
| 顶层文档 | 类型 | 标题 | 格式选项 | 下载最新的英语版本 | 日期 | |
|---|---|---|---|---|---|---|
| * | 数据表 | LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers 数据表 (Rev. G) | PDF | HTML | 2014-11-12 | ||
| 应用手册 | 将印刷电路板覆铜迹线用作电流检测 分流电阻器 | PDF | HTML | PDF | HTML | 2026-5-6 | ||
| 应用手册 | 电流检测放大器的 ESD、EOS 和闩锁效应事件的风险和预防 | PDF | HTML | 英语版 | PDF | HTML | 2024-12-11 | |
| 电子书 | An Engineer's Guide to Current Sensing (Rev. B) | 2022-4-12 | ||||
| 电子书 | 电子书：工业机器人设计工程师指南 | 英语版 | 2020-3-25 | |||
| 电子书 | 简化电流感应 (Rev. A) | 2020-1-9 |
设计与开发
如需其他信息或资源，请点击以下任一标题进入详情页面查看（如有）。
LMP8640HV-FEVAL — LMP8640HV-F 50V/V 评估板
The LMP8640HV-F Current Sense Evaluation Board is designed to evaluate the LMP8640HV-F, Precision Current Sensing Amplifier with fixed gain of 50V/V. This board show a typical configuration of a bidirectional current sense with two LMP8640HV-F parts mounted on the PCB together with the required (...)
LMP8640HV-HEVAL — LMP8640HV-H 100V/V 评估板
The LMP8640HV-H Current Sense Evaluation Board is designed to evaluate the LMP8640HV-H, Precision Current Sensing Amplifier with fixed gain of 100V/V. This board show a typical configuration of a bidirectional current sense with two LMP8640HV-H parts mounted on the PCB together with the required (...)
LMP8640HV-TEVAL — LMP8640HV-T 20V/V 评估板
The LMP8640HV-T Current Sense Evaluation Board is designed to evaluate the LMP8640HV-T, Precision Current Sensing Amplifier with fixed gain of 20V/V. This board show a typical configuration of a bidirectional current sense with two LMP8640HV-T parts mounted on the PCB together with the required (...)
CS-AMPLIFIER-ERROR-TOOL — Current Sense Amplifier Comparison and Error Tool
TIDA-00302 — 具有瞬态稳定性的电流分流监控器参考设计
这种高压侧电流分流监测器用于测量电流通过电流传感电阻器时电流传感电阻器两端产生的电压。
此外，还采用了外部保护电路来提供浪涌和快速瞬态保护，并展示 IEC61000-4-4 和 IEC61000-4-5 的不同抗扰度等级。
| 封装 | 引脚 | CAD 符号、封装和 3D 模型 |
|---|---|---|
| SOT-23-THN (DDC) | 6 | Ultra Librarian |