Title :
A 23mW, 73dB dynamic range, 80MHz BW continuous-time delta-sigma modulator in 20nm CMOS
Author :
Ho, Shen-Shyang ; Chi-Lun Lo ; Zhiyu Ru ; Jialin Zhao
Author_Institution :
MediaTek USA, Woburn, MA, USA
Abstract :
A 23mW, 80MHz BW, 73dB dynamic range continuous-time ΔΣ modulator in 20nm CMOS is presented. The modulator operates from 1.0/1.2/1.5V supplies. Power is minimized by combining a low OSR, fast digital excess loop delay compensation scheme, and several techniques to minimize delay in the feedback path. The result is a highly power efficient modulator that achieves an FOM(DR) of 168dB.
Keywords :
CMOS digital integrated circuits; circuit feedback; compensation; continuous time filters; delta-sigma modulation; CMOS process; FOM; bandwidth 80 MHz; continuous-time delta-sigma modulator; dynamic range continuous-time ΔΣ modulator; fast digital excess loop delay compensation scheme; feedback path; low OSR; power 23 mW; power efficient modulator; size 20 nm; voltage 1.0 V; voltage 1.2 V; voltage 1.5 V; CMOS integrated circuits; Clocks; Computed tomography; Delays; Dynamic range; Logic gates; Modulation;
Conference_Titel :
VLSI Circuits Digest of Technical Papers, 2014 Symposium on
Conference_Location :
Honolulu, HI
Print_ISBN :
978-1-4799-3327-3
DOI :
10.1109/VLSIC.2014.6858396
