Dual, High Voltage
Current Shunt Monitor
Data Sheet
AD8213
Rev. C
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FEATURES
?000 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
40癈 to +125癈 for Y grade
40癈 to +150癈 for H grade
Excellent ac and dc performance
3 礦/癈 typical offset drift
10 ppm/癈 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
UT2
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 ?.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
40癈 to +125癈 for the Y grade, 40癈 to +150癈 for the H grade
and is offered in a small 10-lead MSOP package.