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 die and packaged form. The operating temperature range for the die is 25°C higher (up to 150°C) than the packaged part to enable the user to apply the AD8206 in high temperature applications.

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 a 5 V supply by using the VREF1 and VREF2 pins. With VREF1 attached to the V+ pin, and VREF2 attached to the GND pin, 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 an external voltage to the VREF1 and VREF2 pins.

FEATURES

Ideal for current shunt applications

High common-mode voltage range

−2 V to +65 V operating

−5 V to +68 V survival

Gain = 20

Wide operating temperature range

Die: −40°C to +150°C

8-lead SOIC: −40°C to +125°C

Adjustable offset

Available in SOIC and die form

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