GENERAL DESCRIPTION

The AD8417 is a high voltage, high resolution current shunt amplifier. It features an initial gain of 60 V/V, with a maximum ±0.3 gain error over the entire temperature range. The buffered output voltage directly interfaces with any typical converter. The AD8417 offers excellent input common-mode rejection from −2 V to +70 V. The AD8417 performs bidirectional current measurements across a shunt resistor in a variety of automotive and industrial applications, including motor control, power management, and solenoid control.

FEATURES

Typical 0.1 µV/°C offset drift

Maximum ±400 µV voltage offset over full temperature range

2.7 V to 5.5 V power supply operating range

Electromagnetic interference (EMI) filters Included

High common-mode input voltage range

−2 V to +70 V continuous

−4 V to +85 V survival

Initial gain = 60 V/V

Wide operating temperature range: −40°C to +125°C

Bidirectional operation

Available in 8-lead SOIC and 8-lead MSOP

Common-mode rejection ratio (CMRR): 86 dB, dc to 10 kHz

Qualified for automotive applications

APPLICATIONS

High-side current sensing in

Motor controls

Solenoid controls

Power management

Low-side current sensing

Diagnostic protection