A Simple Flip-Around Switch with Reduced Charge Injection for High Precision Single-Ended Switched-Capacitor Circuits

Abstract

This paper presents a architecture to reduce charge injection in single-ended switched capacitor networks where high precision is inevitable. The key advantage of this architecture in switched capacitor network is that without any additional circuitry, the switch non-idealities like charge injection and clock feedthrough can be improved significantly. The design is done in 0.18µm TSMC process. The results shows that the proposed switching scheme is 50% more accurate compared to all other conventional techniques in handling charge injection modeling inaccuracies in CMOS switches.