Category: Hardware
Product Number: ADXL354
Hello,
I am designing an accelerometer to detect earthquake using ADXL354, and AD7768-4. As ADXL354 has 32kOhm resistor inside I use voltage follower and then input single-ended signal to FDA.
I set Rg=299Ohm, Rf=499Ohm, as shown in attached circuit, but the gain is not exactly equal to 499/299 or 1.66.
Also I tried to connect white noise input, but common mode noise is higher 800mV at the output (OUT).
Please tell me steps to make gain as ratio of Rf/Rg, and reduce common mode noise.
Thank you,
Lhagva
