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Sunday, September 03, 2006

Interfacing Pressure Transducer Circuit

AD620 useful in many bridge applications
the AD620 is especially suitable for higher resistance pressure
Transducer powered at lower voltages where small size and low
Power become more significant.

Picture shows a 3 kΩ pressure transducer bridge powered from 5 V.
In such a circuit, the bridge consumes only 1.7 mA. Adding the
AD620 and a buffered voltage divider allows the signal to be
conditioned for only 3.8 mA of total supply current. Small size and
low cost make the AD620 especially attractive for voltage output
pressure transducers.

Since it delivers low noise and drift, it will also serve applications

such as diagnostic noninvasive blood pressure measurement.

AD620 datasheet pdf