Title :
A 110 dB, 3-mW fourth-order Σ-Δ modulator for atmospheric pressure sensor
Author :
Kim, Taeyoon ; Park, Wonki ; Ahn, Heesun ; Min, Kyongwon ; Lee, Sangyong ; Choi, Jongchan ; Kim, Chulwoo ; Kim, Kynnyun ; Lee, Sungchul
Author_Institution :
Dept. of Electron. & Comput. Eng., Korea Univ., Seoul
Abstract :
In this paper, a 110 dB, 1.024 MHz fourth-order single-loop sigma-delta modulator has been presented with an over-sampling ratio of 128 and an overload factor of -6 dB for a bandwidth of 4 kHz. In particular, this Sigma-Delta modulator is well suited for atmospheric pressure sensor. The whole modulator consumes only 3-mW from a single 3.3 V supply in a 0.35-mum CMOS technology and chip size is 1.68 mm2.
Keywords :
CMOS integrated circuits; atmospheric pressure; pressure sensors; sigma-delta modulation; CMOS technology; atmospheric pressure sensor; fourth-order Sigma-Delta modulator; fourth-order single-loop sigma-delta modulator; frequency 1.024 MHz; Bandwidth; CMOS technology; Circuit noise; Circuit topology; Delta-sigma modulation; Digital modulation; Quantization; Signal resolution; Signal to noise ratio; Switches;
Conference_Titel :
System-on-Chip, 2008. SOC 2008. International Symposium on
Conference_Location :
Tampere
Print_ISBN :
978-1-4244-2541-9
Electronic_ISBN :
978-1-4244-2542-6
DOI :
10.1109/ISSOC.2008.4694888
