I am looking for 16 bit dac & 16 channel with 0-5V.
Also application is battery powered, so I need DAC to put in sleep when not required.

I had found this octal dac;low power from TI DAC8568 with SPI interface.

Its 8 channel so I need to use two dacs in parallel. But I didn't find CS pin there.
Is there any other alternative to use 2 dacs in parallel . I have only one SPI in my MCU.

 

It is done with a serial command, see page 39.