Title :
Bulk-driven flipped voltage follower
Author :
Haga, Yasutaka ; Kale, Izzet
Author_Institution :
Sch. of Electron. & Comput. Sci., Univ. of Westminster, London, UK
Abstract :
A voltage buffer so-called the bulk-driven flipped voltage follower is presented. This proposal is based on the flipped voltage follower (FVF) technique, but a bulk-driven MOSFET with the replica-biased scheme is utilized for the input device to eliminate the DC level shift. The proposed buffer has been designed and simulated with a 0.35 mum CMOS technology. The input current and capacitance of our proposal are 1.5 pA and 9.3 fF respectively, and with 0.8 V peak-to-peak 500 kHz input, the total harmonic distortion is 0.5% for a 10 pF load. This circuit can operate from a single 1.2 V power supply and consumes only 2.5 muA.
Keywords :
CMOS integrated circuits; buffer circuits; driver circuits; operational amplifiers; CMOS technology; FVF technique; MOSFET; bulk-driven flipped voltage follower; capacitance 10 pF; capacitance 9.3 fF; current 1.5 pA; current 2.5 muA; frequency 500 kHz; replica-biased scheme; size 0.35 mum; voltage 0.8 V; voltage 1.2 V; voltage buffer; CMOS technology; Differential amplifiers; Energy consumption; MOSFET circuits; Operational amplifiers; Proposals; Rail to rail amplifiers; Rail to rail operation; Transconductance; Voltage;
Conference_Titel :
Circuits and Systems, 2009. ISCAS 2009. IEEE International Symposium on
Conference_Location :
Taipei
Print_ISBN :
978-1-4244-3827-3
Electronic_ISBN :
978-1-4244-3828-0
DOI :
10.1109/ISCAS.2009.5118363
