Title :
A 0.7V MOSFET-only switched-opamp /spl Sigma//spl Delta/ modulator
Author :
Sauerbrey, J. ; Tille, T. ; Schmitt-Landsiedel, D. ; Thewes, R.
Author_Institution :
Corporate Res., Infineon Technol. AG, Munich, Germany
Abstract :
A 0.7V MOSFET-only switched-opamp /spl Sigma//spl Delta/ modulator for speech applications achieves 67dB SNDR, and 75dB dynamic range. The circuit, occupying 0.08mm/sup 2/ in 0.18/spl mu/m CMOS, does not use voltage boosting or low-V/sub T/ devices. All capacitors are compensated MOS devices.
Keywords :
CMOS integrated circuits; operational amplifiers; sigma-delta modulation; speech processing; switched networks; 0.18 micron; 0.7 V; CMOS circuit; MOSFET-only switched-opamp /spl Sigma//spl Delta/ modulator; SNDR; compensated MOS capacitor; dynamic range; speech processing; Amplitude modulation; CMOS process; Capacitance; Delay effects; Delta modulation; Linearity; MOS capacitors; MOSFET circuits; Switching circuits; Threshold voltage;
Conference_Titel :
Solid-State Circuits Conference, 2002. Digest of Technical Papers. ISSCC. 2002 IEEE International
Conference_Location :
San Francisco, CA, USA
Print_ISBN :
0-7803-7335-9
DOI :
10.1109/ISSCC.2002.993056
