LMP8481-Q1:LMP848x-Q1 汽车类、76V、高侧、高速电流感测放大器

The automotive qualified LMP8480-Q1 and LMP8481-Q1 are precision high-side current sense amplifiers that amplify a small differential voltage developed across a current sense resistor in the presence of high input common-mode voltages. These amplifiers are designed for bidirectional (LMP8481-Q1 device) or unidirectional (LMP8480-Q1 device) current applications and accept input signals with common-mode voltage range from 4 V to 76 V with a bandwidth of 270 kHz. Because the operating power supply range overlaps the input common-mode voltage range, the LMP848x device may be powered by the same voltage that is being monitored. This benefit eliminates the need for an intermediate supply voltage to be routed to the point of load where the current is being monitored, resulting in reduced component count and board space.

The LMP848x-Q1 family consists of fixed gains of 20, 60, and 100 for applications that demand high accuracy over temperature. The low-input offset voltage allows the use of smaller sense resistors without sacrificing system error. The LMP8480-Q1 and LMP8481-Q1 devices are pin-for-pin replacements for the MAX4080 and MAX4081 devices, offering improved offset voltage, wider reference adjust range and higher output drive capabilities. The LMP8480-Q1 and LMP8481-Q1 devices are available in a 8-pin VSSOP package.

产品特性
  • Qualified for Automotive Applications
  • AEC-Q100 Qualified With the Following Results:
    • Device Temperature Grade 1: –40°C to
      +125°C Ambient Operating Temperature
    • Device HBM ESD Classification Level 2
    • Device CDM ESD Classification Level C6
  • Device Temperature Grade 1: –40°C to
    +125°C Ambient Operating Temperature
  • Device HBM ESD Classification Level 2
  • Device CDM ESD Classification Level C6
  • Bidirectional or Unidirectional Sensing
  • Common Mode Voltage Range: 4.0 V to 76 V
  • Supply Voltage Range: 4.5 V to 76 V
  • Fixed Gains: 20, 60, and 100 V/V
  • Gain Accuracy: ±0.1%
  • Offset: ±80 µV
  • Bandwidth (–3 dB): 270 kHz
  • Quiescent Current: < 100 µA
  • Buffered High-Current Output: > 5 mA
  • Input Bias Current: 7 µA
  • PSRR (DC): 122 dB
  • CMRR (DC): 124 dB
  • 8-Pin VSSOP Package
参数parametrics
参数LMP8481-Q1LMP8480-Q1
Common Mode Voltage (Max) (V)7676
Common Mode Voltage (Min) (V)44
Input Offset (+/-) (Max) (uV)265265
Input Offset Drift (+/-) (Typ) (uV/C)66
Gain (V/V)20 60 10020 60 100
Gain Error (%)0.60.6
CMRR (Min) (dB)100100
Bandwidth (kHz)270270
Supply Voltage (Max) (V)767.6
Supply Voltage (Min) (V)4.54.5
Iq (Max) (mA)0.1550.155
Special FeaturesBi-directional
RatingAutomotiveAutomotive
Operating Temperature Range (C)-40 to 125-40 to 125
Package GroupVSSOPVSSOP
Package Size: mm2:W x L (PKG)8VSSOP: 15 mm2: 4.9 x 3(VSSOP)8VSSOP: 15 mm2: 4.9 x 3(VSSOP)
数据表 (1)
标题类型大小 (KB)日期
LMP848x-Q1 Automotive, 76-V, High-Side, High-Speed, Current Sense AmplifierPDF25022016年 4月 27日
应用手册 (5)
标题类型大小 (KB)日期
高压电源轨的精密电流测量PDF2342016年 11月 28日
Precision Current Measurements on High Voltage Power Supply RailsPDF1002016年 12月 2日
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
用户指南 (1)
标题类型大小 (KB)日期
LMP8480EVM Current Shunt Monitors GuidePDF5322013年 3月 19日
模型 (3)
标题种类类型大小 (KB)日期
LMP8481 PSpice ModelPSpice ModelZIP63 KB2013年 3月 25日
LMP8481 TINA-TI Reference DesignTINA-TI Reference DesignTSC4028 KB2013年 3月 25日
LMP8481 TINA-TI Spice ModelTINA-TI Spice ModelZIP39 KB2013年 3月 25日
设计套件与评估板 (1)
培训内容型号类型
LMP8480 和 LMP8481 评估工具LMP848XMMEVM-X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 | 引脚封装数量 | 载体
LMP8481AHQDGKRQ1生产PREVIEW-40 to 125联系BDTICVSSOP (DGK)3500 | LARGE T&R
LMP8481ASQDGKRQ1生产PREVIEW-40 to 125联系BDTICVSSOP (DGK)3500 | LARGE T&R
LMP8481ATQDGKRQ1生产PREVIEW-40 to 125联系BDTICVSSOP (DGK)3500 | LARGE T&R
LMP848x-Q1 Automotive, 76-V, High-Side, High-Speed, Current Sense Amplifier LMP8481-Q1
高压电源轨的精密电流测量 INA282-Q1
Precision Current Measurements on High Voltage Power Supply Rails INA282-Q1
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
LMP8480EVM Current Shunt Monitors Guide LMP8481-Q1
LMP8481 PSpice Model LMP8481-Q1
LMP8481 TINA-TI Reference Design LMP8481-Q1
LMP8481 TINA-TI Spice Model LMP8481-Q1