Hi. I have schem with few AD7606 ICs. When temperature about -37 to -40 Celsius, one of ADCs is not start. States of Data outputs, Busy and Firstdata signals what IC same as in reset state. PCB topology is same as in evaluation board.
In upper temperature all good.
I think that the reason is incorrect initialization sequence. What state of SCLK, CS, CONV and other signals need to be during reset pulse?
What is the reset signal dependence on temperature?