ANALOG DEVICES AD8218BCPZ-WP 电流检测放大器, 零漂移, 1个放大器, 130 µA, LFCSP, 8 引脚, -40 °C, 125 °C
Product Details
The AD8218 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 AD8218 offers excellent input common-mode rejection from 4 V to 80 V. The AD8218 performs bidirectional 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 AD8218 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 range and the 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. The AD8218 also includes an internal 80 mV reference that can be enabled for optimal dynamic range in unidirectional current sense applications. The typical input offset voltage is ±50 μV.
The AD8218 is offered in an 8-lead MSOP package.
**Applications**
High-side current sensing
Precision high voltage current sources
### Features and Benefits
\-- 4 V to 80 V operating
\-- -0.3 V to 85 V survival
−40°C to +125°C
\-- ±100 nV/°C typical offset drift
\-- ±50 μV typical offset
\-- ±5 ppm/°C typical gain drift
\-- 110 dB typical CMRR at dc