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 VREF1 pin and the VREF2 pin. With the VREF1 pin attached to the V+ pin and the VREF2 pin attached to the GND pin, the output is set at half scale. Attaching both VREF1 and VREF2 to GND causes the output to be unipolar, starting near ground. Attaching both VREF1 and VREF2 to V+ causes the output to be unipolar, starting near V+. Other offsets can be obtained by applying an external voltage to VREF1 and VREF2.

Applications

* Current sensing

Motor controls

Transmission controls

Diesel injection controls

Engine management

Suspension controls

Vehicle dynamic controls

DC-to-dc converters

* ±4000 V HBM ESD

* High common-mode voltage range

−2 V to +65 V operating

−5 V to +68 V survival

* Buffered output voltage

* 5 mA output drive capability

* Wide operating temperature range:

−40°C to +125°C

* Ratiometric half-scale output offset

* Excellent ac and dc performance

1 μV/°C typical offset drift

10 ppm/°C typical gain drift

120 dB typical CMRR at dc

80 dB typical CMRR at 100 kHz

* Available in 8-lead SOIC