Title :
A 14-bit oversampled delta-sigma modulator for silicon condenser microphones
Author :
Cheng-Ta Chiang ; Yu-Chung Huang
Author_Institution :
Microsyst. Technol. Center, Ind. Technol. Res. Inst., Hsinchu, Taiwan
Abstract :
In this paper, a 14-bit oversampled delta-sigma modulator for silicon condenser microphones is newly proposed. The proposed oversampled delta-sigma modulator is attractive due to that the requirements of silicon condenser microphones are successfully matched. Based upon the device parameters of 0.35 μm 2P4M CMOS technology with 3.0 V power supply, all the functions and performance of the proposed delta-sigma modulator for silicon condenser microphones are successfully tested and proven through MATLAB in the behavior simulations and SPICE in the circuit simulations. The area of this fabricated chip is 1327 × 944 μm2 and the simulated power consumption is 5.25 mW. The proposed delta-sigma modulator is suitable for silicon condenser microphones applied on mobile phones, laptops, PDAs, and hearing aids, etc.
Keywords :
CMOS integrated circuits; SPICE; delta-sigma modulation; integrated circuit testing; microphones; silicon; 2P4M CMOS technology; MATLAB; SPICE simulation; chip fabrication; mobile phone; oversampled delta-sigma modulator; power 5.25 mW; silicon condenser microphone; size 0.35 mum; voltage 3 V; word length 14 bit; CMOS technology; Circuit simulation; Circuit testing; Delta modulation; Energy consumption; MATLAB; Microphones; Power supplies; SPICE; Silicon; ADC; delta-sigma modulator; silicon condenser microphones;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 2009. I2MTC '09. IEEE
Conference_Location :
Singapore
Print_ISBN :
978-1-4244-3352-0
DOI :
10.1109/IMTC.2009.5168609
