about the +15V, -15V power supply design for the AD5755-1 AVDD and AVSS supply pins, especially the required power supply current capability.
Could someone please check/confirm my understanding:
The AVDD supply current (AIDD) is not really affected by the D/A channel output load (for all output modes).
The AVSS supply current (AISS) is not really affected by the D/A channel output load for positive output voltages or current mode. However, for negative output voltages the load current adds to the AD5755-1 AISS supply current.
Is this basically correct? The AD5755-1 DC/DC circuitry is used as the VBOOST supply.