PCM1794A-Q1: program DC voltage with PCM1794A-Q1

Hello Ken,

For this family of devices you should  send the IOUT to   a resistor to convert the current output  to Voltage and then to second stage  for filtering & conversion of of differential to single ended, if desired.

The value of this resistor , along with the full current output of the DAC is the max  voltage that will be available at the output before going to the filter and DIFF-to-SE  stage. To keep things simple I would use a gain of one for the next stage (Filter and Diff to SE) . 

You can read the detail of the I/V and filter sections for current DACs in the following app note.

https://www.ti.com/lit/an/sbaa333a/sbaa333a.pdf?ts=1758146611331&ref_url=https%253A%252F%252Fwww.google.com%252F

Regards,

Arash

Hi Ken,

For complementary signals I always use diff to SE, Keep in mind the voltage swing ( based on 750Ohm resistor) is b/w –7.575 V and  –1.725V for IOUT+ and IOUT- (Figure 24. Relationship Between Digital Input and Analog Output).

Regards,

Arash

You'r most welcome.

Regards,

Arash