Effect of DAC Deglitching on Frequency Response

Bristow-Johnson R. Effect of DAC Deglitching on Frequency Response. J Audio Eng Soc. 1988;36(11):895-903. Available from: https://aes.org/publications/elibrary-page/?id=5122

@article{BristowJohnson1988_5122,
  author = {Bristow-Johnson, Robert},
  title = {{Effect of DAC Deglitching on Frequency Response}},
  journal = {Journal of the Audio Engineering Society},
  volume = {36},
  number = {11},
  pages = {895--903},
  year = {1988},
  month = nov,
  publisher = {Audio Engineering Society},
  url = {https://aes.org/publications/elibrary-page/?id=5122}
}

TY  - JOUR
TI  - Effect of DAC Deglitching on Frequency Response
AU  - Bristow-Johnson, Robert
T2  - Journal of the Audio Engineering Society
J2  - J. Audio Eng. Soc.
VL  - 36
IS  - 11
SP  - 895
EP  - 903
PY  - 1988
DA  - 1988/11/06
UR  - https://aes.org/publications/elibrary-page/?id=5122
PB  - Audio Engineering Society
LA  - en
AB  - Sample-and-hold circuits used in deglitching state changes of digital-to-analog converters should normally be time-constant limited during the sample or tracking period to prevent the buffer amplifier input from saturating, which results in undesirable slewing and distortion. This time-constant limiting keeps the sample-and-hold circuit operating linearly but adversely affects the frequency response, particularly when the sample period is small compared to the sampling period (sample + hold) as in multichannel multiplexing audio systems. The equivalent transfer function of the deglitching process is derived and the corresponding frequency response is plotted in a typical application. A method of frequency compensation of this effect is proposed.
ER  -