Title :
99-dB High-Performance Delta-Sigma Modulator for 20-kHz Bandwidth
Author :
Choi, Youngkil ; Roh, Hyungdong ; Nam, Hyunseok ; Roh, Jeongjin
Author_Institution :
Hanyang Univ., Ansan
Abstract :
In this paper, we present a fourth-order single-bit delta-sigma modulator with wide dynamic range. This modulator is suitable for distributed sensor and audio codec applications. This chip was fabricated in a 0.18- mum one-poly, four-metal CMOS technology, and occupies 1.22-mm2 active area. The circuit is clocked at 3.2 MHz and the overall power consumption is 5.6 mW from a 3.0 V power supply. Experimental results show a maximum dynamic range of 99 dB within a 20- kHz bandwidth.
Keywords :
CMOS integrated circuits; clocks; delta-sigma modulation; low-power electronics; audio codec; bandwidth 20 kHz; chip fabrication; clock circuit; distributed sensor; four-metal CMOS technology; fourth-order single-bit delta-sigma modulator; frequency 3.2 MHz; power 5.6 mW; power consumption; size 0.18 mum; voltage 3.0 V; Bandwidth; CMOS technology; Circuits; Clocks; Codecs; Delta modulation; Dynamic range; Energy consumption; Modulation coding; Power supplies; analogue-to-digital converter; delta-sigma modulator; switched-capacitor circuit;
Conference_Titel :
Electronic Design, Test and Applications, 2008. DELTA 2008. 4th IEEE International Symposium on
Conference_Location :
Hong Kong
Print_ISBN :
978-0-7695-3110-6
DOI :
10.1109/DELTA.2008.54
