Title :
Dual-channel bootstrapped switch for high-speed high-resolution sampling
Author :
Wang, L. ; Yin, W.J. ; Xu, J. ; Ren, J.Y.
Author_Institution :
Dept. of Microelectron. & Solid State Electron., Fudan Univ., Shanghai
Abstract :
A novel low-voltage CMOS bootstrapped switch has been designed. In this switch, a PMOS-type bootstrapped circuit combining with an NMOS-type one forms a dual-channel sampling switch that transmits the input signals to the output. Because of this parallel structure, the variation of on-resistance, owing to the variation of the gate overdrive and the threshold voltage, is greatly reduced, exhibiting gain in the sample-and-hold accuracy and linearity. The design was realised in an SMIC 0.18 mum CMOS process and its greatly improved dynamic performance was measured
Keywords :
CMOS integrated circuits; bootstrap circuits; integrated circuit design; low-power electronics; sample and hold circuits; semiconductor switches; 0.18 micron; CMOS bootstrapped switch; CMOS integrated circuit; PMOS-type bootstrapped circuit; dual-channel bootstrapped switch; integrated circuit design; sample-and-hold accuracy; sample-and-hold linearity;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20062344
