A 1.5-V, 300-nW, continuous-time allpass filter With 67 dB dynamic range

Author

Sawigun, Chutham ; Pawarangkoon, Prajuab

Author_Institution

Centre for Bioelectronics Integrated Syst. & Dept. of Electron. Eng., Mahanakorn Univ. of Technol., Bangkok, Thailand

fYear

2014

fDate

14-17 May 2014

Firstpage

1

Lastpage

4

Abstract

A compact 1^st-order analog allpass filter operating from a 1.5 V DC supply is presented. The proposed circuit is formed by a handful of subthreshold pMOS transistors, two capacitors and one current source. Verified by circuit simulations using RF Spectre and the AMS 0.35-micron CMOS parameters, the proposed filter consumes 300 nW quiescent power and contributes output noise voltage of 0.03 mV_rms while providing a 90-degree phase-shift frequency of 22 kHz. The differential input signal voltage swing and dynamic range are 0.1 V_p and 67.7 dB, respectively.

Keywords

MOSFET; all-pass filters; continuous time filters; phase shifters; radiofrequency spectra; AMS CMOS parameters; RF spectre; analog allpass filter; continuous-time allpass filter; dynamic range; frequency 22 kHz; phase-shift frequency; power 300 nW; quiescent power; signal voltage swing; size 0.35 micron; subthreshold pMOS transistors; voltage 1.5 V; Band-pass filters; Capacitors; Gain; MOSFET; Noise; CMOS circuit; allpass filter; analog filter; nanopower; ultra low-power;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on

Conference_Location

Nakhon Ratchasima

Type

conf

DOI

10.1109/ECTICon.2014.6839818

Filename

6839818