[SOLVED] VCO-Based ADC

[Ahmad24A]

Hi everyone,
I am working on VCO based delta sigma ADC. I want to know how to convert two outputs of VCO based quantizer into just one for feedback DAC.
I will tell you the basic structure is that i am using a 9 stages VCO and then connect two DFFs one after the other and then connect the output of these two DFFs to one XOR which gives one output. And similar procedure is performed in negative end which mean that circuit is differential. Now finally we get two different output of two different XOR (positive and negative end). I want to combine these two outputs and make just one to give feedback to DAC.
kindly need Help .

 

[Ans5671]

Hi, a couple of questions to understand the system better. You have mentioned that the circuit is differential so, is the input differential? and if its differential then wouldn't the feedback path need a differential DAC?

 

[Ahmad24A]

nderstand the system better. You have mentioned th

Hi, a couple of questions to understand the system better. You have mentioned that the circuit is differential so, is the input differential? and if its differential then wouldn't the feedback path need a differential DAC?

yeah input are differential and feedback DAC is also differential.

 

[Ans5671]

So can you clarify why do you need to convert differential to single?