High Common-Mode Voltage,

Bidirectional Current Shunt Amplifier

Data Sheet

AD8206

Rev. B

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FEATURES

Ideal for current shunt applications

High common-mode voltage range

−2 V to +65 V operating

−25 V to +75 V survival

Gain = 20

Wide operating temperature range

−40°C to +125°C for Y grade and WY grade

−40°C to +150°C for WH grade

Bidirectional operation

Available in 8-lead SOIC

Qualified for automotive applications

EXCELLENT AC AND DC PERFORMANCE

15 µV/°C offset drift

30 ppm/°C gain drift

80 dB CMRR dc to 20 kHz

APPLICATIONS

High-side current sensing in

Motor controls

Transmission controls

Diesel-injection controls

Engine management

Suspension controls

Vehicle dynamic controls

DC-to-dc converters

FUNCTIONAL BLOCK DIAGRAM

AD8206

8

1

4

2

3

7

5

6

+IN

–IN

NC

NC = NO CONNECT

GND

V+

OUT

Figure 1.

GENERAL DESCRIPTION

The AD8206 is a single-supply difference amplifier for

amplifying small differential voltages in the presence of large

common-mode voltages. The operating input common-mode

voltage range extends from −2 V to +65 V. The typical single-

supply voltage is 5 V.

The AD8206 is offered in an 8-lead SOIC package. The Y grade

and WY grade models are rated for operation from −40°C to

+125°C. The WH grade is rated from −40°C to +150°C.

Excellent DC performance over temperature keeps errors in the

measurement loop to a minimum. Offset drift is typically less

than 15 µV/°C, and gain drift is typically below 30 ppm/°C.

The output offset can be adjusted from 0.08 V to 4.7 V with

the output is set at half scale. Attaching both pins to GND

causes the output to be unipolar, starting near ground.

Attaching both pins to V+ causes the output to be unipolar

starting near V+. Other offsets can be obtained by applying