A 10-MHz low-power always valid sample-and-hold circuit with low-droop rate

Author

Harb, Adnan ; Assi, Ali

Author_Institution

United Arab Emirates Univ., Al-Ain

fYear

2007

fDate

5-8 Aug. 2007

Firstpage

156

Lastpage

158

Abstract

A 10 MHz, low-power, high-accuracy fully- differential always-valid sample-and-hold (AVSH) circuit is described. The circuit is based on the high dc gain Miller compensation operational amplifier. Its low- power make it suitable for biomedical application such that implantable smart medical devices (SMDs). The proposed circuit has been designed with CMOS 0.13 mum technology. The simulation shows that at 1.2 V supply voltage and 10 MHz of sampling frequency, the harmonic distortion is less than -52 dB for an input swing of 800 mV @ 2 MHz. The power dissipation is 1.26 mW.

Keywords

CMOS analogue integrated circuits; biomedical equipment; harmonic distortion; operational amplifiers; sample and hold circuits; frequency 10 MHz; harmonic distortion; high dc gain Miller compensation; implantable smart medical devices; low-droop rate; operational amplifier; power dissipation; sample-and-hold circuit; sampling frequency; size 0.13 mum; CMOS technology; Capacitors; Circuit simulation; Clocks; Differential amplifiers; Frequency; Operational amplifiers; Sampling methods; Switches; Voltage;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems, 2007. MWSCAS 2007. 50th Midwest Symposium on

Conference_Location

Montreal, Que.

ISSN

1548-3746

Print_ISBN

978-1-4244-1175-7

Electronic_ISBN

1548-3746

Type

conf

DOI

10.1109/MWSCAS.2007.4488560

Filename

4488560