mike_bihan
Full Member level 3
dynamic element matching dac
There are quite a few papers stated that they could shape the mismatch noise in DAC, by using special scrambling techniques.
However, I very much doubt it, since the error of DAC will not be sensed by circuit, it is impossible to shape it as sigma-delta modulator do. The best way of noise reduction is to randomly select elements and make the mismatch looks as white noise, and was pushed to high frequency range.
There are quite a few papers stated that they could shape the mismatch noise in DAC, by using special scrambling techniques.
However, I very much doubt it, since the error of DAC will not be sensed by circuit, it is impossible to shape it as sigma-delta modulator do. The best way of noise reduction is to randomly select elements and make the mismatch looks as white noise, and was pushed to high frequency range.