Circuits, Communications and Systems, Pacific-Asia Conference on (2009)
May 16, 2009 to May 17, 2009
DOI Bookmark: http://doi.ieeecomputersociety.org/10.1109/PACCS.2009.97
This paper presents a novel low distortion CMOS bootstrapped switch that adopts a “source track” technique to track the real source terminal of the sampling switch. This technique improves nonlinear distortion due to variation of the gate overdrive and the threshold voltage in conventional switches, acquiring a precise sampling of signal. Based on the SMIC 0.18μm standard CMOS process, the proposed switch has been simulated at 200MSPS. The simulation results show the spurious-free dynamic range (SFDR) is 73.6 dB and total harmonic distortion (THD) is -79.8 dB.
component, source track, gate-source bootstrap, nonlinear distortion, sampling switch (keywords)
L. Qian, Z. Zhu and Y. Yang, "A Low Distortion CMOS Bootstrapped Switch," 2009 Pacific-Asia Conference on Circuits, Communications and Systems (PACCS 2009)(PACCS), Chengdu, 2009, pp. 261-264.