A 20-bit 25-kHz delta-sigma A/D converter utilizing a frequency-shaped chopper stabilization scheme. - Chris Binan Wang (IEEE J. Solid State Circuits, 2001)

A 113-dB DSD audio ADC using a density-modulated dithering scheme. - Chris Binan Wang; Sonny Ishizuka; Bill Yang Liu (IEEE J. Solid State Circuits, 2003)