Title :
Body effect compensated switch for low voltage switched-capacitor circuits
Author :
Kim, Sangwook ; Greeneich, Edwin
Author_Institution :
Dept. of Electr. Eng., Arizona State Univ., Tempe, AZ, USA
Abstract :
In order to reduce distortion due to the threshold voltage variations of an NMOS switch by the input signal, a novel low-voltage switch that compensates the body effect is proposed. The linearity performance of the proposed circuit is confirmed by simulation with a 0.5 μm standard CMOS technology (Vtn0=0.7 V, Vtp0=1.0 V). Simulations with HSPICE indicate better performance of the total harmonic distortion (THD) is achieved using the proposed circuit in a first-order non-inverting switched-capacitor (SC) low pass filter operating with a single 1.5-V power supply.
Keywords :
CMOS analogue integrated circuits; SPICE; circuit simulation; error compensation; harmonic distortion; low-power electronics; switched capacitor filters; 0.5 micron; 1.5 V; CMOS technology; HSPICE simulation; NMOS switch; body effect compensated switch; distortion reduction; first-order noninverting switched-capacitor low pass filter; linearity performance; low voltage switched-capacitor circuits; single 1.5-V power supply; threshold voltage variations; total harmonic distortion; CMOS technology; Circuit simulation; Distortion; Linearity; Low voltage; MOS devices; Switched capacitor circuits; Switches; Switching circuits; Threshold voltage;
Conference_Titel :
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN :
0-7803-7448-7
DOI :
10.1109/ISCAS.2002.1010485
