AD8210:  High Voltage, Bidirectional Current Shunt Monitor

The AD8210 is a single-supply, difference amplifier ideal 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 supply voltage is 5 V.

The AD8210 is offered in a SOIC package. The operating temperature range is −40°C to +125°C.

Excellent ac and dc performance over temperature keep errors in the measurement loop to a minimum. Offset drift and gain drift are guaranteed to a maximum of 8 μV/°C and 20 ppm/°C, respectively.

The output offset can be adjusted from 0.05 V to 4.9 V with a 5 V supply by using the V_REF1 pin and the V_REF2 pin. With the V_REF1 pin attached to the V+ pin and the V_REF2 pin attached to the GND pin, the output is set at half scale. Attaching both V_REF1 and V_REF2 to GND causes the output to be unipolar, starting near ground. Attaching both V_REF1 and V_REF2 to V+ causes the output to be unipolar, starting near V+. Other offsets can be obtained by applying an external voltage to V_REF1 and V_REF2.

Applications

• Current sensing
Motor controls
Transmission controls
Diesel injection controls
Engine management
Suspension controls
Vehicle dynamic controls
DC-to-dc converters