pbs681
Joined: 19 Aug 2004
Posts: 154
Helped: 11
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 27 Aug 2008 14:28 pipelined ADC |
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Hi all,
In pipelined ADC, we know that after quantization at the first stage, we convert back the digital signla to analog signal. And depending on the decision from comparator (ADC), if the output for that particular stage is 1, we will substract the re-converted analog signal with our sampled input. After that this residue will be amplified with gain of 2 (for 1.5 bit/perstage ADC). So, my question is that, why do we need to amplify the residue??
Thanks
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