Dual, High Voltage

Current Shunt Monitor

AD8213

Rev. 0

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FEATURES

±4000 V 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

10-lead MSOP: −40°C to +125°C

Excellent ac and dc performance

3 μV/°C typical offset drift

−10 ppm/°C typical gain drift

120 dB typical CMRR at dc

APPLICATIONS

High-side current sensing

Motor controls

Transmission controls

Diesel injection controls

Engine management

Suspension controls

Vehicle dynamic controls

DC-to-DC converters

FUNCTIONAL BLOCK DIAGRAM

A2

G = +20

–IN2

+IN2

PROPRIETARY

OFFSET

CIRCUITRY

CF2

OUT2

A1

G = +20

–IN1

+IN1

PROPRIETARY

OFFSET

CIRCUITRY

CF1

GND

OUT1

V+

AD8213

Figure 1.

GENERAL DESCRIPTION

The AD8213 is a dual-channel, precision current sense amplifier. It

features a set gain of 20 V/V, with a maximum ±0.5% 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 AD8213 performs unidirectional current measure-

ments across a shunt resistor in a variety of industrial and

automotive applications, such as motor control, solenoid

control, 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 AD8213

also features additional pins that allow the user to low-pass filter

the input signal before amplifying, via an external capacitor to

ground. The AD8213 has an operating temperature range of

−40ºC to +125ºC and is offered in a small 10-lead MSOP package.