Zero-voltage switching in switched current circuits

Author

Nairn, D.G.

Author_Institution

Dept. of Electr. & Comput. Eng., Queen´´s Univ., Kingston, Ont., Canada

Volume

5

fYear

1994

fDate

30 May-2 Jun 1994

Firstpage

289

Abstract

Traditionally the accuracy of switched-current circuits has been much lower than that of switched-capacitor circuits. To address this problem, an accurate high-speed switched-current sample-and-hold technique based on zero-voltage switching is presented. The technique significantly reduces the signal dependent charge injection, leading to improved sampling accuracy. To demonstrate the proposed technique, a sample-and-hold has been implemented using a 1.2 μm CMOS process. The circuit is expected to achieve 14 bit linearity at sampling rates exceeding 50 M Samples/sec. While dissipating only 3.5 mW from a nominal 3.3 V supply

Keywords

CMOS analogue integrated circuits; analogue processing circuits; network analysis; sample and hold circuits; switched current circuits; switching; 1.2 micron; 3.3 V; 3.5 mW; CMOS process; ZVS; high-speed sample/hold technique; sampling accuracy improvement; signal dependent charge injection; switched current circuits; zero-voltage switching; CMOS process; Impedance; MOS capacitors; MOSFETs; Sampling methods; Signal sampling; Switches; Switching circuits; Transconductance; Zero voltage switching;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 1994. ISCAS '94., 1994 IEEE International Symposium on

Conference_Location

London

Print_ISBN

0-7803-1915-X

Type

conf

DOI

10.1109/ISCAS.1994.409364

Filename

409364