A Low-Leakage Body-Guarded Analog Switch in 0.35- $\mu\mbox{m}$ BiCMOS and Its Applications in Low-Speed Switched-Capacitor Circuits

A low-leakage body-guarded analog switch (BGswitch) for slow switched-capacitor (SC) circuits is presented. The improvement of accuracy in SC circuits employing BG-switches is demonstrated by comparing their performance with counterparts employing conventionally biased CMOS switches in three applications: sample-and-hold (S/H) amplifier, SC amplifier, and… (More)