Hi Guys
Has anyone used a adv7123 Video dac. I have a dought in its application circuit.
Pin 36 is Vref and it is connect to VAA using a 0.1uF cap. Why is it so. I couldnt understand the reason behind it. Similar is the case with pin35 COMP.
Can any one pls let me know about it.
Thanks in advance
tama
I have not looked at the data sheets provided by muralicrl. But I have used similar Ic's and the vref has a dual function. It can output the internal voltage reference or it can supply a different external reference. If you do not use it they suggest connecting the cap to it for decoupling purposes. The cap on the comp pin is purely for decoupling purposes