Hi guys
I have an ADS8887 (18 bit) which will read data from an accelerometer. The accelerometer measures acceleration with a full scale range of -3g to +3g and the sensitivity is 1.2V/g. It has a POS and NEG output.
The signal from the accelerometer is amplified about 1000 times (which is needed for this particular project) using INA163. The output of INA163 is then connected to AINP of ADS8887. I have connected AINN to the ground since that pin is not being used, because INA163 has built in differential amplifier.
For the Reference voltage to the ADC, I am using a REF5020, providing 2.048V.
Now, my question is whether I would be able to measure the negative voltage from the accelerometer?
Or should I use different ADC and Voltage reference? Any suggestion?
Regards
OB