AnsweredAssumed Answered

AD9106 Questions

Question asked by yorkpa on Jun 10, 2015
Latest reply on Jun 11, 2015 by yorkpa

Hi, I'm working on getting the AD9106 up and running and have a couple questions:

 

1) What is "xDAC INPUT CODE"? Is it a register value or something internal to the chip? It appears on pg. 22 of Rev. A of the datasheet in the section "DAC TRANSFER FUNCTION". I couldn't find it explained on the datasheet, but maybe I missed it.

 

2) Right now I'm using a single-ended 10.5 MHz clock from a microcontroller (Arduino  Due). I am taking CLKN to ground via a 0.1uF cap and 39K resistor. How bad of a setup is this? I'm seeing a lot of jitter in my analog outputs (sine waves at 1 kHz). Are there other places the jitter could come from besides a jittery clock, or is the clock the likely culprit?

 

Thanks,

Pete

Outcomes