Title :
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
fDate :
May 30 2010-June 2 2010
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;
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
DOI :
10.1109/ISCAS.2010.5537461
