AD9726_Iout equation error

Document created by analog-archivist Employee on Feb 23, 2016
Version 1Show Document
  • View in full screen mode

I have a question about the relationship between IOUA and IOUB of AD9726.
For IOUTA, 0 mA output is expected when the inputs are all 0s. For IOUTB, 0 mA
output is expected when all inputs are set to 1.
But the equations as shown in page 19, IOUTA = IOUTFS × DB[15:0]/65536   IOUTB
= IOUTFS × (1 − DB[15:0])/65536 are not corresponding to the results.

 

The equation in the AD9726 data sheet is incorrect.
They should be:
IOUTA = IOUTFS * DAC_CODE/65536
IOUTB = IOUTFS * ((65536 – 1) – DAC_CODE)/65536

Attachments

    Outcomes