I'm using an ADV7391 on my development design to produce a Genlock (Black Burst) signal from DAC 1 that the system requires. The datasheet for the part recommends an output buffer and an optional reconstruction (anti-imaging) low pass filter in various forms for SD, ED, and HD. Do I require any special requirements if I want to use the DAC1 output for Genlock?
I don't think the requirements would be any different that the corresponding normal outputs for the format you are generating. It would be specific to your application needs.
Thanks for the reply. The datasheet is not clear on the use of the device for Genlock, either in SD (Black Burst) or HD (Tri-Level Sync). Are there any application notes for this device available from Analog that might contain information regarding the usage for Genlock?
Not that I have been able to find-- I don't see any specific requirements or recommendations for Genlock. The recommendations for output filters on page 69 that I think you are referring to are it.