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ADC selection for single-ended source

Question asked by usaghi on May 12, 2014
Latest reply on May 23, 2014 by usaghi



I'm looking for ADC of 14 bit, with two channels simultaneous sampling. Sampling rate has to be over 100 until saveral handreds of ksps, and input signals are single-ended and unipolar voltage from 0 to 3.3V.  However, I could only find ADC with differential input among ADI products. I know single-ended-to-differential conversion circuitry can be placed between signal source and ADC, however at the same time, another manufacturer is making single-end input ADC along with above requirements.


So question is, is there any merit to place single-ended-to-differential ADC driver before differential input ADC, compare to be using single-ended input ADC directly from signal source ?

Please presume single-ended input ADC is allowed to be input range of 0 to 3.3V, so no need to level shift, and also in case there is basically no need to amplify or attenuate the source signal.


Any of your instructions/suggestions are always very much appreciated.


Best Regards,