what i know about dummt switch is elliminate clock feedtrough and charge injection error.but i really want to know more in detail..the operation,calculation and effect when been applied with opamp.
is there any good reference that anyone know that can be share
C. Eichenburger, W. Guggenbuhl, “On charge injection in analog MOS switches and dummy switch compensation techniques,” IEEE Trans. on Circuits & Systems, vol. 37, no. 2, Feb. 1990, p. 256-264.
Added after 18 minutes:
C. Eichenberger, W. Guggenbuhl, “Charge injection of analogue CMOS switches,” IEE Proc. G: Circuits, Devices & Systems, vol. 138, no. 2, April 1991, p.155-159.