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
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.