Hi Team,
I am using AD7655ASTZ. It has five ground pins: INGND, REFGND, AGND, DGND, and OGND.
As per the datasheet of AD7655,
DGND must be tied to the analog or digital ground plane depending on the configuration.
In the reference schematic of the AD7655, DGND is connected to AGND with an RC circuit.
What would be the best approach for connections of AGND and DGND? Should I connect both to the same GND or separate both grounds (AGND and DGND) with a resistor between them?
Is consideration of AGND and DGND important for any ADC, just like for a DAC?