High Voltage,
Data Sheet
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 registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 ©2007–2016 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
FEATURES
Qualified for automotive applications
±4000 V human body model (HBM) electrostatic discharge (ESD)
High common-mode input voltage range: −2 V to +65 V
Continuous input voltage range: −3 V to +68 V
Buffered output voltage
Wide operating temperature range
5-lead SOT: −40°C to +125°C
Excellent ac and dc performance
5 µV/°C typical offset drift
−13 ppm/°C typical gain vs. temperature
120 dB typical common-mode rejection ratio (CMRR) at dc
APPLICATIONS
High-side current sensing
Motor controls
Transmission controls
Engine management
Suspension controls
Vehicle dynamic controls
DC-to-dc converters
FUNCTIONAL BLOCK DIAGRAM
06824-001
V
IN+
V+
OUT
G = +20
AD821
1
A1
PROPRIE
TA
RY
OFFSET
CIRCUIT
RY
V
IN–
GND
Figure 1.
GENERAL DESCRIPTION
The AD8211 is a high voltage, precision current shunt amplifier. It
features a set gain of 20 V/V, with a typical ±0.35% 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 AD8211 performs unidirectional current measurements
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 m V,
regardless of the common-mode voltage present. The AD8211
has an operating temperature range of −40°C to +125°C and is
offered in a small 5-lead SOT package.
