New 12-bit source-follower track-and-hold circuit suitable for high-speed applications

Author

Campos, Marcel Veloso ; Fortunato, André Luís ; Filho, Carlos Alberto dos Reis

fYear

2011

fDate

3-5 Oct. 2011

Firstpage

82

Lastpage

85

Abstract

An analysis of a cascode source-follower with all transistors operating in saturation mode is presented. The new structure provides means to mitigate the effects of nonlinearities caused by transistor capacitances. It is also studied the effects of adding a sampling switch at the output of the source-follower. Performance results of 0.35μm CMOS implementation and dimensioning methodology of the resulting source sampling circuit is presented along the text. The circuit achieves more than 12 bits of linearity in the frequencies from 0 to 100MHz while consuming 10mW.

Keywords

CMOS analogue integrated circuits; MOSFET; sample and hold circuits; CMOS implementation; cascode source-follower analysis; frequency 0 MHz to 100 MHz; high-speed application; power 10 muW; sampling circuit; sampling switch; saturation mode; size 0.35 mum; source-follower track-and-hold circuit; transistor capacitance; word length 12 bit; Bandwidth; CMOS integrated circuits; Capacitance; Integrated circuit modeling; Linearity; Threshold voltage; Transistors; harmonic distortion; source sampling; source-follower; voltage buffer;

fLanguage

English

Publisher

ieee

Conference_Titel

VLSI and System-on-Chip (VLSI-SoC), 2011 IEEE/IFIP 19th International Conference on

Conference_Location

Hong Kong

Print_ISBN

978-1-4577-0171-9

Electronic_ISBN

978-1-4577-0169-6

Type

conf

DOI

10.1109/VLSISoC.2011.6081655

Filename

6081655