Looking at the forum for hints on an issue I am having with a design, I found this message:
I am troubleshooting a board where AD9707 is used and the designer supplied AVDD wit 3.3V…
The AD9706 matches the precision and DAC update rate you desire, and is probably the closest we have to what you need. Its interface is a parallel CMOS interface.
I'm obviously missing something fundamental with figure 89 of the AD970x data sheet - if REFIO is driving 1V to the noninverting input of the op amp, it appears V_iouta will always be >1V; isn't this outside of its compliance range?
Hi Andre -
Series terminators are a good idea for the AD9706 data input signals. Ideally they should be close to the signal source and have a value of 25 ohms.
I’m using AD9707 with AVDD=1.8V, CLKVDD=2.5V and DVDD=3.3V power supply according to data sheet that, at pag. 30, states:
“The analog and digital sections of the AD9704/AD9705/AD9706/AD9707 have separate power supply inputs (AVDD and DVDD) that can…
Some high speed DAC have options for auto-calibration. Why and when should I use this option?