LMP8640HV:Precision High Voltage Current Sense Amplifier

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.

产品特性
  • 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
  • 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
参数parametrics
参数LMP8640HVLMP8645HV
Common Mode Voltage (Max) (V)7676
Common Mode Voltage (Min) (V)-2-2
Input Offset (+/-) (Max) (uV)9001000
Input Offset Drift (+/-) (Typ) (uV/C)2.67
Gain (V/V)20 50 100Adjustable
Gain Error (%)0.252
CMRR (Min) (dB)6060
Bandwidth (kHz)950 450 230990
Supply Voltage (Max) (V)1212
Supply Voltage (Min) (V)2.72.7
Iq (Max) (mA)0.7220.61
Special FeaturesLow-side CapableLow-side Capable
RatingCatalogCatalog
Operating Temperature Range (C)-40 to 125-40 to 125
Package GroupSOTSOT
Package Size: mm2:W x L (PKG)6SOT: 8 mm2: 2.8 x 2.9(SOT)6SOT: 8 mm2: 2.8 x 2.9(SOT)
Approx. Price (US$)0.94 | 1ku0.94 | 1ku
数据表 (1)
标题类型大小 (KB)日期
LMP8640/-Q1/HV Precision High Voltage Current Sense AmplifiersPDF13932014年 11月 12日
应用手册 (3)
标题类型大小 (KB)日期
High-Side DC Motor Current ProtectionPDF1142016年 12月 1日
High-Side Drive, High-Side Solenoid Monitor With PWM RejectionPDF1192016年 12月 1日
Low-Drift, Precision, In-Line Motor Current Measurements with PWM RejectionPDF1502016年 12月 1日
选择与解决方案指南 (2)
标题类型大小 (KB)日期
模拟信号链路产品指南 (Rev. B)PDF55182013年 9月 3日
Motor Drive and Control SolutionsPDF64932016年 11月 16日
更多文献资料 (2)
标题类型大小 (KB)日期
TI 旋转电机-繁体字版本 (Rev. D)PDF44912012年 7月 2日
电机驱动与控制解决方案指南 (Rev. D)PDF32432012年 5月 30日
设计套件与评估板 (3)
培训内容型号类型
用于 LMP8640 的评估板LMP8640HV-TEVAL评估模块和开发板
用于 LMP8640 的评估板LMP8640HV-HEVAL评估模块和开发板
用于 LMP8640 的评估板LMP8640HV-FEVAL评估模块和开发板
开发工具 (1)
培训内容型号类型
基于 SPICE 的模拟仿真程序TINA-TI电路设计和仿真
订购型号
型号试生产 / 生产材料状态温度(oC)价格(美元) | Quantity封装 | 引脚器件标记封装数量 | 载体
LMP8640HVMK-F/NOPB生产ACTIVE-40 to 1250.94 | 1kuSOT (DDC)AD6A1000 | LARGE T&R
LMP8640HVMK-H/NOPB生产ACTIVE-40 to 1250.94 | 1kuSOT (DDC)AF6A1000 | LARGE T&R
LMP8640HVMK-T/NOPB生产ACTIVE-40 to 1250.94 | 1kuSOT (DDC)AB6A1000 | LARGE T&R
LMP8640HVMKE-F/NOPB生产ACTIVE-40 to 1251.08 | 1kuSOT (DDC)AD6A250
LMP8640HVMKE-H/NOPB生产ACTIVE-40 to 1251.08 | 1kuSOT (DDC)AF6A250
LMP8640HVMKE-T/NOPB生产ACTIVE-40 to 1251.08 | 1kuSOT (DDC)AB6A250
LMP8640HVMKX-F/NOPB生产ACTIVE-40 to 1250.94 | 1kuSOT (DDC)AD6A3000
LMP8640HVMKX-H/NOPB生产ACTIVE-40 to 1250.94 | 1kuSOT (DDC)AF6A3000
LMP8640HVMKX-T/NOPB生产ACTIVE-40 to 1250.94 | 1kuSOT (DDC)AB6A3000
LMP8640/-Q1/HV Precision High Voltage Current Sense Amplifiers LMP8640HV
High-Side DC Motor Current Protection LMP8640HV
High-Side Drive, High-Side Solenoid Monitor With PWM Rejection LMP8640HV
Low-Drift, Precision, In-Line Motor Current Measurements with PWM Rejection LMP8640HV
模拟信号链路产品指南 (Rev. B) BQ24392
Motor Drive and Control Solutions LMZ34002
TI 旋转电机-繁体字版本 (Rev. D) DRV8412-C2-KIT
电机驱动与控制解决方案指南 (Rev. D) DRV8412-C2-KIT
LMP8640HV