I'm using the AMC7812's DACs to margin some Voltage regulators. I have a series resitor connected between the AMC DAC output and the VR's feedback.
While the DAC is not configured the internal resistor ~10K affects my feedback voltage. How do you recomend to use the AMC to margin VRs?
I do not believe that the internal 10k pull down resistor can be disabled. Could you send a schematic of your output to show what you are doing.
Thank you Tony.
Attached you'll find a simplified diagram of our margining interface
The 10K internal to the AMC7812 cannot be disabled - have you considered using an analog switch to isolate your regulator? Perhaps something like the MAX4954 would be useful as a means to isolate/open the circuit.
Thank you Tom.
That's what we will do for Rev B but i was looking for a software solution for Rev A.
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