Title :
A 0.6V 70dB SNR 0.3MHz BW Multibit Switched-Opamp ΣΔ Modulator
Author :
Sauerbrey, Jens ; Thewes, Roland
Author_Institution :
Infineon Technol. AG, Munich
Abstract :
A 0.6V switched-opamp multibit ΣΔ modulator achieves 65dB SNDR and 70dB SNR at 0.31 MHz signal bandwidth. A 5-b internal SC network based quantizer enables multibit operation under sub 1V conditions. The circuit is realized in a 90nm CMOS process using digital transistors and does not use voltage boosting techniques.
Keywords :
CMOS digital integrated circuits; operational amplifiers; sigma-delta modulation; switched capacitor networks; 0.31 MHz; 0.6 V; 1 V; 5 bit; 90 nm; CMOS process; SC network based quantizer; SigmaDelta modulator; digital transistors; multibit operation; multibit switched-opamp; operational amplifiers; voltage boosting technique; Bandwidth; CMOS process; Capacitors; Circuit topology; Clocks; Delay effects; Dynamic voltage scaling; Operational amplifiers; Switching circuits; Transfer functions;
Conference_Titel :
Solid-State Circuits Conference, 2006. ESSCIRC 2006. Proceedings of the 32nd European
Conference_Location :
Montreux
Print_ISBN :
1-4244-0303-0
DOI :
10.1109/ESSCIR.2006.307497
