SAR ADC V reference limits | Cypress Semiconductor
SAR ADC V reference limits
Can anybody tell me the minimum external voltage reference that can be used with PSoC4 SAR ADC?
I am trying to to measure small signals +/-20mV pk. I could amplify them, but that would limit the bandwidth. The internal amps have a maximum GBW of 6MHz and I need a bandwidth of at least 200kHz which limits the gain to a maximum of 30.
A (hopefully!) simple solution would be to use a lower V ref, but I can't find any data which states the minimum value that the ADC will reliably work at.
Any help would be appreciated.