Wide swing signal amplification by SC voltage doubling

Author

Höppner, Sebastian ; Schüffny, René ; Tsai, Zuo-Min ; Wang, Huei

Author_Institution

Fac. of Electr. Eng. & Inf. Technol., Tech. Univ. Dresden, Dresden, Germany

fYear

2010

fDate

May 30 2010-June 2 2010

Firstpage

761

Lastpage

764

Abstract

This paper presents a switched capacitor voltage doubler as analog signal amplifier to increase the swing in low voltage electronics like PLLs. A signal is doubled with respect to a reference voltage which results in a wide signal swing exceeding the supply rails. An analytical expression of the transfer function, from which design equations for circuit parameters can be obtained, is derived including the effect of incomplete voltage settling due to finite switch resistances. The theory is validated by measurements of a voltage doubler as part of a PLL charge pump in 90nm CMOS technology.

Keywords

CMOS integrated circuits; charge pump circuits; low-power electronics; phase locked loops; switched capacitor networks; transfer functions; voltage multipliers; CMOS technology; PLL charge pump; SC voltage doubling; analog signal amplifier; design equations; finite switch resistance; low voltage electronics; reference voltage; size 90 nm; switched capacitor voltage doubler; transfer function; wide swing signal amplification; CMOS technology; Current measurement; Electrical resistance measurement; Equations; Low voltage; Rails; Supercapacitors; Switches; Switching circuits; Transfer functions; charge pump; phase-locked loop (PLL); switched capacitor; voltage doubler;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (ISCAS), Proceedings of 2010 IEEE International Symposium on

Conference_Location

Paris

Print_ISBN

978-1-4244-5308-5

Electronic_ISBN

978-1-4244-5309-2

Type

conf

DOI

10.1109/ISCAS.2010.5537461

Filename

5537461