Recently im working on a AD7732 ADC.
I have some problems in "Reading the input Voltage"
The Registers are set like this:
24 bit , Channel 0 , +-5 V , Mode : ADC Zero Scale Self Calibration. And Bias0- Bias0+ are connected to ref +2.5 V .
ZS , FS, Channel ZS , Channel FS all are at their Default Values.
then i change the mode to single conversion. and it works.
now i dont know why i read this values:
for example for 0 volt input, i read about 8388608 (FFFFFF/2)
for 1.2 volt input, i read about 8600000.(Why??)
I Previously Read Datasheets and Appnotes , but i didnt understand why!