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Design >> Mixed-Signal Design >> Question on a calibration method
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Message started by steven on Feb 14^th, 2006, 6:36pm

Title: Question on a calibration method
Post by steven on Feb 14^th, 2006, 6:36pm

Hi,

I have a question on calibrating ADC. Some calibration method requires RAM to store calibrated codes. How is this RAM built? I think this method would reqire off-chip circuitries.

Thanks

Title: Re: Question on a calibration method
Post by Paul on Feb 16^th, 2006, 12:41pm

Hi Steven,

frequently ADCs are integrated with a microcontroller, which can take care of eventual calculations required for calibration and which certainly has RAM where it can store the coefficients. If you are designing a pure ADC product, you certainly prefer using custom logic for calibration processing and storage of the coefficients (i.e. registers).

Does this answer your question?

Paul

Title: Re: Question on a calibration method
Post by steven on Feb 16^th, 2006, 6:25pm

Paul wrote on Feb 16^th, 2006, 12:41pm:

Hi Paul,

Yes, your answer makes sense. I was confused by the digital calibration method on ADC and the others using microprocessor methods. Thank you.

Regards,
Steven