has anyone used ADV7123 video dac

[s3034585]

adv7123 application

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

 

[muralicrl]

adv7123

Hi,

See the attachment, on ADV7123. Whatever mentioned in the document follow them.

If you need more information, contact me.

Regards,
N.Muralidhara

 

[davidgrm]

how to use adv7123

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

 

[hcet]

@ s3034585

We use the ADV7123 in several applications. For example here:



It is a very stable DAC which never caused any trouble.

ep20k

 

[kib]

Download the application notes from here
**broken link removed**