Hello, I have a question about single ended measurement with ADS1257 . I know this ADC is very fresh, maybe this is the reason it has a basic pdf datasheet. 1) Which input pin is supposed to be used as a 'ground' reference for single ended measurement ? AIN3 ? In ADS1256 you have been advising to use AINCOM for this purpose. 2) Can the differential method can be used with one input pin shorted to ground ? (AIN0 - input , AIN1 - ground |||| AIN2 - input, AIN3 - ground). Will it influence the measurement's accuracy ? I assume all the digital communication and registers are the same as in ADS1256 , am I right? I'm forced to use QFN because of the limited space on board. Thank you in advance, Best regards, Peter
↧