Title :
A 1.8 V, 5.4 mW, digital-audio /spl Sigma//spl Delta/ modulator in 1.2 /spl mu/m CMOS
Author :
Rabii, S. ; Wooley, B.A.
Author_Institution :
Center for Integrated Syst., Stanford Univ., CA, USA
Abstract :
This experimental switched-capacitor /spl Sigma//spl Delta/ modulator achieves 92 dB dynamic range for a signal bandwidth of dc to 25 kHz while operating from 1.8 V supply. The supply voltage is consistent with the end-of-life of two battery cells in series. The fully-differential circuit has been integrated in a 5 V, 1.2 /spl mu/m CMOS technology with poly-n/sup +/ capacitors.
Keywords :
CMOS integrated circuits; audio equipment; sigma-delta modulation; switched capacitor networks; 1.2 micron; 1.8 V; 5.4 mW; CMOS technology; digital audio; dynamic range; fully-differential circuit; poly-n/sup +/ capacitors; signal bandwidth; supply voltage; switched-capacitor /spl Sigma//spl Delta/ modulator; CMOS technology; Capacitors; Circuits; Delta modulation; Digital modulation; Power amplifiers; Power dissipation; Sampling methods; Switches; Voltage;
Conference_Titel :
Solid-State Circuits Conference, 1996. Digest of Technical Papers. 42nd ISSCC., 1996 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-3136-2
DOI :
10.1109/ISSCC.1996.488582
