HI. I have bought a AD7655 ADC. And set pins like below:
CNVST => 0.4MHz
RD => GND
IMPULSE => GND
Vref => 2.5 v
and input1 of channel A is selected.(INA!)
RESET <= GND
But the Busy pin is always high. what is the problem with my configuration? If the Analog Input is floating, can ADC convert noise to the digital output?
in addition, How can I know that my ADC is working properly and has not failed?