Part Number: DAC60096
Hello E2E Experts,
Good day.
I would like to seek help to troubleshoot our PCB with DAC60096. Our board contains six DAC60096 with each analog output connecting to an amplifier configured as a voltage follower. When we applied only the +- 12V analog power, it draws about 300mA from both voltage souce. It's already a bit high considering no load is attached. But when we then turn on the 3.3V digital power, the analog power seem to be shorted somehow, as the bench power turns into current limit mode (over 1A) for both analog power source. The digital supply seems normal and draws about 20mA current.
Could you think of any possible cause of this problem? The schematics of the DAC and amplifier circuits are attached here. There is no power regulator on board. The power is draw directly from a bench power supply. Thanks in advance!
SCH_dac_conn_2-P2_2025-10-24.pdf
One more thing, if no digital power is supplied, all DAC chips feel warm. But once on, all DAC chips quickly get very hot.
Regards,
TICSC
