Other Parts Discussed in Thread: ADS8661, ADS8665, OPA328, OPA206
Tool/software:
Hi, I would like to use the ADC121S021 with the STM32F446 microcontroller as an external ADC.
The signal is coming from a vibration sensor (PCB 353B03) via a signal conditioner (PCB 480C02). The signal conditioner outputs a ±5 VAC signal, which cannot be fed directly to the ADC. Therefore, I need to convert this bipolar signal into a unipolar signal. I am using ±12 VDC rail-to-rail supplies.
While researching bipolar-to-unipolar conversion, I came across a TI application note:
https://www.ti.com/lit/an/sbaa604/sbaa604.pdf
Could you please confirm whether I can follow the approach outlined in this document for use with my vibration sensor? Also, is the ADC121S021 a suitable choice for this application, or would you recommend a different ADC?
Thank you,
Fahad