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,包罗有细密运算放大器和高度匹配的薄膜电阻网络,具有非常高的CMRR(97dB),极低的增益误差0.0035% (35ppm)和极低增益漂移(1ppm/℃),主要用在高边或低边电流检测,双向宽共模电流检测,高压/低压电平转换,细密差分放大器,工业数据收罗前端和绝缘电路替代件.本文先容了LT6375主要特点,框架图,多种应用电路,以及演示板DC2443评估电路,电路图,质料清单和PCB设计原理图。 The LT6375 is a unity-gain difference amplifier whichcombines excellent DC precision, a very high input commonmode range and a wide supply voltage range. It includes aprecision op amp and a highly-matched thin film resistornetwork. It features excellent CMRR, extremely low gainerror and extremely low gain drift. Comparing the LT6375 to existing difference amplifierswith high common mode voltage range, the selectableresistor divider ratios of the LT6375 offer superior systemperformance by allowing the user to achieve maximumSNR, precision and speed for a specific input commonmode voltage range. The op amp at the core of the LT6375 has Over-The-Top®protected inputs which allow for robust operation in environmentswith unpredictable voltage conditions. The LT6375 is specified over the C40℃ to 125℃ temperaturerange and is available in space-saving MSOP16and DFN14 packages. LT6375主要特点: ±270V Common Mode Voltage Range LT6375应用: High Side or Low Side Current Sensing 演示板DC2443 Demonstration Circuit 2443 is a Configurable High Voltage Amplifier featuring the LT®6375. This demo board translates a high common mode signal to an output related to a low voltage reference level. The demo circuit is equipped with jumpers to facilitate setting the pin-strapped internal divider ratio configuration. The LT6375 is unique in that it may be powered from a low voltage (down to 3.3V) while it accepts signals well outside the supply range. This device is also unusual in that it can operate with high supply voltages (up to 50V). Connection points are provided to wire the amplifier in other configurations besides the simple translator. |