High Voltage,

Current Shunt Monitor

Data Sheet

AD8215

Rev. B

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FEATURES

±4000 V human body model (HBM) ESD

High common-mode voltage range

−2 V to +65 V operating

−3 V to +68 V survival

Buffered output voltage

Wide operating temperature range

8-Lead SOIC: −40°C to +125°C

Excellent ac and dc performance

6 μV/°C typical offset drift

−8 ppm/°C typical gain drift

120 dB typical CMRR at dc

Qualified for automotive applications

APPLICATIONS

High-side current sensing

Motor controls

Transmission controls

Engine management

Suspension controls

Vehicle dynamic controls

DC to dc converters

FUNCTIONAL BLOCK DIAGRAM

IN+

V+

OUT

G = +20

AD8215

A1

PROPRIETARY

OFFSET

CIRCUITRY

IN–

GND

Figure 1.

GENERAL DESCRIPTION

The AD8215 is a high voltage, precision current shunt monitor.

It features a set gain of 20 V/V, with a maximum ±0.3% gain

error over the entire temperature range. The buffered output

voltage directly interfaces with any typical converter. Excellent

common-mode rejection from −2 V to +65 V is independent of

the 5 V supply. The AD8215 performs unidirectional current

measurements across a shunt resistor in a variety of industrial

and automotive applications, such as motor controls, solenoid

controls, or battery management.

Special circuitry 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. The AD8215

has an operating temperature range of −40°C to +125°C and is

offered in a small 8-lead SOIC package.