Linear LT6375±270V 共模电压差分放大器解决方案.docx

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薄膜电阻网络, 具有非常高的 CMRR(97dB), 极低的增益误差 % (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, 精密差分放大器, 工业数据采集前端和绝缘电路替代件. 本文介绍了 LT6375 主要特性, 框图, 多种应用电路, 以及演示板 DC2443 评估电路, 电路图, 材料清单和 PCB 设计图。 The LT6375 isa unity-gain difference amplifier bines excellent DC precision, a very high monmode range and a wide supply voltage range. It includes aprecision op amp and a highly-matched thin film work. It features excellent CMRR, extremely low gainerror and extremely low gain drift. Comparing the LT6375 to existing difference amplifierswith mon 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 monmode 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 – 40 ℃ to 125 ℃ temperaturerange and is available in space-saving MSOP16and DFN14 packages. LT6375 主要特性:± mon 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-Rai