Title :
Low power, high performance switched-capacitor sigma-delta modulator suitable for battery operated audio signal processing applications
Author :
San, Yoon Ho ; Hasan, S. M Rezaul
Author_Institution :
School of Electr. & Electron. Eng., Univ. Sains Malaysia, Perak, Malaysia
Abstract :
A high performance, low power second order sigma delta modulator is proposed. The proposed convertor can be integrated along with other digital circuits to form a complete monolithic digital signal processor for DSP applications. The convertor is not sensitive to component mismatch and nonidealities of the process technology. The simulation result shows that the proposed convertor achieved virtually 13.9 bit resolution at a sampling frequency of 5.12 MHz for an input signal of 20 kHz bandwidth. It operates at ±2.5 V supply voltage with a single polarity reference voltage and dissipates only 4 mW
Keywords :
CMOS digital integrated circuits; audio signals; audio systems; digital signal processing chips; modulators; sigma-delta modulation; switched capacitor networks; 2.5 V; 20 kHz; 4 mW; 5.12 MHz; CMOS IC; DSP applications; bandwidth; convertor; digital circuits; high performance sigma delta modulator; input signal; low power sigma-delta modulator; monolithic digital signal processor; polarity reference voltage; process technology; resolution; sampling frequency; second order sigma delta modulator; supply voltage; switched-capacitor sigma-delta modulator; Circuit simulation; Converters; Delta modulation; Delta-sigma modulation; Digital circuits; Digital signal processing; Digital signal processors; Integrated circuit technology; Signal resolution; Voltage;
Conference_Titel :
TENCON '96. Proceedings., 1996 IEEE TENCON. Digital Signal Processing Applications
Conference_Location :
Perth, WA
Print_ISBN :
0-7803-3679-8
DOI :
10.1109/TENCON.1996.608434
