Title :
A low power and low voltage continuous time ΣΔ modulator
Author :
Samid, Lourans ; Manoli, Yiannos
Author_Institution :
IMTEK, Albert-Ludwigs-Univ., Freiburg, Germany
Abstract :
This paper discuses the design strategy and implementation of a very low power and low voltage oversampling A/D converter based on a continuous time ΣΔ modulation. The influence of several design parameters like RC-tolerance, clock jitter and implicit anti-aliasing filter are treated. Measurement results of a 1.5 V single bit third order continuous time ΣΔ modulator show a 61 dB SNDR in 50 kHz signal bandwidth and a sampling frequency equal to 3.2 MHz with a power consumption of 78 μW.
Keywords :
continuous time filters; low-power electronics; modulators; sigma-delta modulation; signal sampling; tolerance analysis; 1.5 V; 3.2 MHz; 50 kHz; 78 muW; RC-tolerance; clock jitter; continuous time ΣΔ modulator; implicit anti-aliasing filter; low power ΣΔ modulator; low voltage ΣΔ modulator; oversampling A/D converter; single bit ΣΔ modulator; Bandwidth; Clocks; Energy consumption; Filters; Frequency measurement; Jitter; Low voltage; Power measurement; Sampling methods; Time measurement;
Conference_Titel :
Circuits and Systems, 2005. ISCAS 2005. IEEE International Symposium on
Print_ISBN :
0-7803-8834-8
DOI :
10.1109/ISCAS.2005.1465524
