AnsweredAssumed Answered

Start with AD8137

Question asked by norman on Feb 9, 2015
Latest reply on Feb 24, 2015 by norman

Hello,

 

I'm starting a board for an audio application with an AD8137 on each input analog input of an AD1938. AD8137.png

To start, in this case, IN_GND = VREF1 = GND. The problem is that i have VO- = almost +VS and VO+=almost -VS whatever i have on IN+/IN-. I've tried to pull up with a resistor |PD but nothing change. I've also tried to isolate this schematic from the AD1938.

VS+ = 5V, Vs- = -5V.

I checked my schematic and PCB, nothing seems to be wrong.

 

thank you for your time.

Outcomes