Forum Post: RE: Lowest Vref for DAC 8564

Hi Kevin,

Thanks for the information.

One question.Won't I be loosing out on the step size resolution If I go for a higher reference.

What about going for a higher resolution DAC. But I am not finding a quad channel higher resolution DAC.Is there a possibility of sending all the channel data sequentially and demuxing the analog out put.

For example If I go for  9881(18 bit),I could give 1.2V reference for getting the needed step size,but how can I support 4 channels.Each of my channel is 32 KSPS and I want the output to be updated as simultaneous as possible.Also I couldn't find the maximum update rate for 9881 from the data sheet.

Thanks & Regards

Aravind