I’m currently building a PCB with the AD5420AREZ and starting to evaluate it, but I’m concerned that the delivery time for the AD5420 is getting longer.
So I’m also considering the AD5422AREZ, which is a similar product, and I'm thinking of mounting it on the same PCB.
I’m not use the voltage output of the AD5422. I have some questions about the replacement.
5pin: CLEAR SELECT
The 5pin of the AD5420 PCB is connected to GND, so CLEAR SELECT is connected to GND when mounted. The voltage output is not used, any problem?
Since the 17pin of the PCB is OPEN, Ccomp will be OPEN. Is there any problem?
21pin: VOUT, 22pin: +Vsense
The 21pin and the 22pin of the PCB are connected to AVdd through a capacitor.
Is it safe to connect +Vout and +Vsense to AVdd through the capacitor as well? Is it better to remove the capacitor? (Vout and +Vsense are OPEN)
The 23pin of the PCB is OPEN so –Vsense will also be OPEN. Is there a problem?
Are there any other points I should be aware of when replacing the AD5422?