GENERAL DESCRIPTION
●The AD8217 is a high voltage, high-resolution current shunt amplifier. It features a set gain of 20 V/V, with a maximum ±0.35% gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8217 offers excellent common-mode rejection from 4.5 V to 80 V, and includes an internal LDO, which directly powers the device from the high voltage rail. Therefore, no additional supply is necessary, provided that the input common-mode range is 4.5 V to 80 V. The AD8217 performs unidirectional current measurements across a shunt resistor in a variety of industrial and telecom applications including motor control, battery management, and base station power amplifier bias control.
●FEATURES
● High common-mode voltage range
● 4.5 V to 80 V operating
● 0 V to 85 V survival
● Buffered output voltage
● Wide operating temperature range: −40°C to +125°C
● Excellent ac and dc performance
● ±100 nV/°C typical offset drift
● ±100 µV/°C typical offset
● ±5 ppm/°C typical gain drift
● 100 dB typical CMRR at dc
●APPLICATIONS
● High side current sensing
● 48 V telecom
● Power management
● Base stations
● Unidirectional motor control
● Precision high voltage current sources
