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TIPD170: INA333 wheatstone bridge

Part Number: TIPD170

We are using TIPD170: Single-Supply Strain Gauge in a Bridge Configuration Reference Design .

 

We started testing our strain gauge with this board but we could not get the desired results.

The output of the Amplifier swings (1V pk-pk).

 

We have Tested in following criteria

                Monitored input signal to amplifier – it is stable

                Monitored reference signal – stable

                Amplification process - it working correct but the output signal has oscillation.

 

schematic and PCB  @ http://www.ti.com/tool/TIPD170

CRO output attached

 

Parameters for the Output signal

Input Voltage : 5.26 V

Reference voltage : 2.49 V

V+ input : 2.462 V

V- input :2.33 V

Gain : 1

Vout :2.60 V

 Above voltage are measured in multimeter

 

Channel 1 – Vout (AC Coupling)

Channel 2 – V+ Input (DC Coupling)

 

Kindly help us to solve the problem.