High Voltage

Current Shunt Monitor

Preliminary Technical Data

AD8212

Rev. PrA

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other

rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.

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

©2006 Analog Devices, Inc. All rights reserved.

FEATURES

High common-mode voltage range

7 V to +65 V operating (no outside pass transistor)

7 V to >500 V survival (with outside pass transistor)

Adjustable gain

Bidirectional current measurement

Wide operating temperature range

Die: −40°C to +150°C

8-lead SOIC: −40°C to +125°C

Available in SOIC and die form

APPLICATIONS

High-side current sensing

Motor controls

Battery monitoring

Hybrid vehicle control

Diesel injection controls

Vehicle dynamic controls

Dc-to-dc converters

FUNCTIONAL BLOCK DIAGRAM

LOAD

AD8212

IOUT

OFFSET

ALPHA

+IN

–IN

+

–

99kΩ

COM

BIAS

Figure 1.

GENERAL DESCRIPTION

The AD8212 is a self-biased current sense amplifier for level

shifting and amplifying small differential voltages in the

AD8212 offers excellent accuracy and programmable gain

which can be set with a single resistor, making it ideal to use in

industrial, automotive , and consumer applications.

The AD8212 is offered in die and packaged form. The operating

temperature range for the die is 25°C higher (up to 150°C) than

that of the packaged part to enable the user to apply the

AD8212 in high temperature applications.

Excellent AC and DC performance over temperature keep

errors in the measurement loop to a minimum. Offset drift is

typically below 5 uV/ °C, and the gain drift is typically below

50 ppm/°C.