The customer would like to know pin connection when there are unused DACs at schematic.
1) When DAC2 and DAC3 are unused, what should do to +/-OUT2 and +/-OUT3? (No connect or connect to GND?)
2) Relationship between PVDD12, CVDD12, AVDD33 and DAC#.
On EVM, some PVDD12 and these power are connected to GND.
But not clear which DAC# related with each power pins in Datasheet.
or basically customer should connect all power pins to appropriate powers with regardless whether DAC user ether unused.
Thank you for your help as always.
1, the unused DAC output should be kept by No Connect.
2, there is no separated supply of different DAC in AD9144. there is control bits in register 0x11 to power down corresponding DACs.
Thank you very much for your response!
I understand that.