Dual, High Voltage
Current Shunt Monitor
AD8213
FEATURES
FUNCTIONAL BLOCK DIAGRAM
–IN2
+IN2 +IN1
–IN1
4000 V HBM ESD
High common-mode voltage range
−2 V to +65 V operating
−3 V to +68 V survival
Buffered output voltage
A2
A1
V+
PROPRIETARY
OFFSET
PROPRIETARY
OFFSET
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
CIRCUITRY
CIRCUITRY
OUT2
OUT1
G = +20
G = +20
AD8213
CF2
GND
CF1
APPLICATIONS
Figure 1.
High-side current sensing
Motor controls
Transmission controls
Diesel injection controls
Engine management
Suspension controls
Vehicle dynamic controls
DC-to-DC converters
GENERAL DESCRIPTION
Special circuitry is devoted to output linearity being maintained
throughout the input differential voltage range of 0 mV to 2ꢀ0 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 +12ꢀºC and is offered in a small 10-lead MSOP package.
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 +6ꢀ V, is independent of the ꢀ 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.
Rev. A
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registeredtrademarks arethe property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113 ©2007–2009 Analog Devices, Inc. All rights reserved.