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ADC Definitions Query in Cadence Model Writer

ksnf3000

 Hi,

 I am new to Cadence forums so please forgive me if I am in the wrong forum ( and please tell me the correct one also!! )

My query is that I am using Cadence Modelwriter for making an ADC (using veriloga). I am just not sure about the definitions which have been generated by the code. As a result i am not able to correctly parametrize the ADC for the required specifications. 

I would like to know what is "tconv", and "slack" in the code.  I am trying to build a 3-bit ADC and  the input clock frequency should be 2.5 GHz and more.

 Regards,

ksnf3000 

Parents

  • Hi,

    Without seeing the actual VerilogA produced by the Modelwriter it is difficult to comment, and I haven't got the time to run it to see what it might produce.  Aren't the parameters documented in the produced code?  However, I would think that 'tconv' would be the time taken for the conversion from Analogue to Digital.  Actually, never mind, I typed "tconv slack ADC" into a Google search box, and lo and behold I found this in the first few results returned:

    
// PARAMETERS:
// slack = The smallest time interval considered negligible for
// cross event on clock [S]
// tconv = Delay from threshold crossing to output change [S]

    I was right on both counts.  By the way, you are in the correct forum for this sort of question.  Hope this helps you.

    Regards,

    Lawrence.

Reply

  • Hi,

    Without seeing the actual VerilogA produced by the Modelwriter it is difficult to comment, and I haven't got the time to run it to see what it might produce.  Aren't the parameters documented in the produced code?  However, I would think that 'tconv' would be the time taken for the conversion from Analogue to Digital.  Actually, never mind, I typed "tconv slack ADC" into a Google search box, and lo and behold I found this in the first few results returned:

    
// PARAMETERS:
// slack = The smallest time interval considered negligible for
// cross event on clock [S]
// tconv = Delay from threshold crossing to output change [S]

    I was right on both counts.  By the way, you are in the correct forum for this sort of question.  Hope this helps you.

    Regards,

    Lawrence.

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