ADI AD8217BRMZ-RL

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. The AD8217 offers breakthrough performance throughout the -40°C to +125°C temperature range. It features a zero-drift core, which leads to a typical offset drift of ±100 nV/°C throughout the operating temperature and common-mode voltage range. Special attention is devoted to output linearity being maintained throughout the input differential voltage range of 0 mV to 250 mV, regardless of the common-mode voltage present, and the typical input offset voltage is ±100 μV. The AD8217 is offered in a 8-lead MSOP package and is specified from -40°C to +125°C.

• 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 typical offset ±5 ppm/°C typical gain drift 100 dB typical CMRR at dc

• High side current sensing
• 48 V telecom
• Power management
• Base stations
• Unidirectional motor control
• Precision high voltage current sources