Current mode track and hold circuit with 50MS/sec speed and 8-bit resolution

Author

Wong, Oi-Ying ; Tam, Wing-Shan ; Kok, Chi-Wah ; Wong, Hei

Author_Institution

Dept. of Electron. Eng., City Univ. of Hong Kong, Hong Kong

fYear

2008

fDate

Nov. 30 2008-Dec. 3 2008

Firstpage

1168

Lastpage

1171

Abstract

A current-based close loop track-and-hold circuit with a speed of 50 MS/s and 8-bit resolution for plusmn0.8 V input range is implemented using a voltage-control current source and a current switch. The proposed circuit has the advantage of high input impedance and stable output. SPICE simulation using 0.35 mum SMIC CMOS technology with plusmn1.65 V supply showed that the proposed track-and-hold circuit has good input tracking capability, small linear gain error, and can work at high sampling rate.

Keywords

CMOS integrated circuits; SPICE; sample and hold circuits; voltage control; SMIC CMOS technology; SPICE simulation; current mode track and hold circuit; current switch; high input impedance; high sampling rate; input tracking capability; linear gain error; size 0.35 mum; stable output; voltage control current source; CMOS technology; Circuit simulation; Gain; Impedance; SPICE; Sampling methods; Switches; Switching circuits; Tracking loops; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2008. APCCAS 2008. IEEE Asia Pacific Conference on

Conference_Location

Macao

Print_ISBN

978-1-4244-2341-5

Electronic_ISBN

978-1-4244-2342-2

Type

conf

DOI

10.1109/APCCAS.2008.4746233

Filename

4746233