CMOS analog front-end circuits for silicon condenser microphones

Author

Cheng-Ta Chiang ; Wen-Chieh Chou ; Yu-Chun Hsu

Author_Institution

Microsyst. Technol. Center, Ind. Technol. Res. Inst., Hsinchu, Taiwan

fYear

2009

fDate

5-7 May 2009

Firstpage

193

Lastpage

196

Abstract

In this paper, CMOS analog front-end circuits for silicon condenser microphones are newly proposed. The proposed analog front-end circuits are attractive due to that all the analog block circuits for silicon condenser microphones are robust and compact to be integrated. Based upon the device parameters of 0.35 μm 2P4M CMOS technology with 3 V power supply, all the functions and performance of the proposed analog front-end circuits for silicon condenser microphones are successfully tested and proven through SPICE simulations. The area of the analog front-end circuits is 739 × 493 μm² and the simulated power consumption is 835 μW. The proposed analog front-end circuits are suitable for silicon condenser microphones applied on mobile phones, laptops, PDAs, and hearing aids, etc.

Keywords

CMOS analogue integrated circuits; SPICE; capacitive sensors; elemental semiconductors; microphones; silicon; CMOS analog front-end circuits; PDAs; SPICE simulation; condenser microphone; hearing aids; laptops; mobile phones; power 835 muW; power consumption; power supply; size 0.35 mum; voltage 3 V; CMOS analog integrated circuits; CMOS technology; Circuit simulation; Circuit testing; Integrated circuit technology; Microphones; Power supplies; Robustness; SPICE; Silicon; analog front-end circuits; delta-sigma modulator; silicon condenser microphones;

fLanguage

English

Publisher

ieee

Conference_Titel

Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE

Conference_Location

Singapore

ISSN

1091-5281

Print_ISBN

978-1-4244-3352-0

Type

conf

DOI

10.1109/IMTC.2009.5168441

Filename

5168441