A novel low distortion high linearity CMOS bootstrapped switch |
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| Authors: | Zhang Zhang Song Mingxin Wu Chubin Xie Guangjun |
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| Affiliation: | 1. School of Electronic Science & Applied Physics, Hefei University of Technology, Hefei 230009, China;School of Information Science and Technology, Fudan University, Shanghai 200433, China
2. School of Electronic Science & Applied Physics, Hefei University of Technology, Hefei 230009, China |
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| Abstract: | This paper proposes a novel low distortion high linearity CMOS bootstrapped switch, and the proposed switch can alleviate the nonlinear distortion of the on-resistance by eliminating first order signal-dependent variation of the overdrive voltage. Based on a 0.18 m μ standard CMOS process, the simulation results show that at 100 MHz sampling clock frequency and 49 MHz input signal with 2V pp, the proposed switch in differential mode has a Spurious-Free Dynamic Range (SFDR) of 90.1 dB. |
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| Keywords: | Bootstrapped switch Threshold voltage Nonlinear distortion |
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