文档介绍：Linear LT6375±270V 共模电压差分放大器解决方案
Linear公司的LT6375是 ±270V是共模电压差分放大器,具有极好的DC精度,非常高的(±270V)输入共模电压和很宽电源电压范围,包括有精密运算放大器和高度匹配的ust operation in environmentswith unpredictable voltage conditions. 
The LT6375 is specified over the –40℃ to 125℃ temperaturerange and is available in space-saving MSOP16and DFN14 packages.
LT6375主要特性:
±270V Common Mode Voltage Range
97dB Minimum CMRR (LT6375A)
% (35ppm) Maximum Gain Error (LT6375A)
1ppm/℃ Maximum Gain Error Drift
2ppm Maximum Gain Nonlinearity
Wide Supply Voltage Range: to 50V
Rail-to-Rail Output
350μA Supply Current
Selectable Internal Resistor Divider Ratio
300μV Maximum Offset Voltage (LT6375A)
575kHz –3dB Bandwidth (Resistor Divider = 7)
375kHz –3dB Bandwidth (Resistor Divider = 20)
–40
℃ to 125℃ Specified Temperature Range
Low Power Shutdown: 20μA (DFN Package Only)
Space-Saving MSOP and DFN Packages
LT6375应用:
High Side or Low Side Current Sensing
Bidirectional Wide Common Mode Range Current Sensing
High Voltage to Low Voltage Level Translation
Precision Difference Amplifier
Industrial Data-Acquisition Front-Ends
Replacement for Isolation Circuits
2阶巴特沃斯滤波器输出滤波器图
27dB音频增益电路图
图7. LT6375 +/-5mAhowland(差分电压/电流转换电路)电流源电流源
图8. LT6375精密基准电压分压器/缓冲器电路
演示板DC2443
Demonstration