DocumentCode :
3206833
Title :
A reconfigurable Continuous-Time ΔΣ-ADC using a digitally programmable gm-C array
Author :
Angele, Daniel ; Stein, Martin ; Kauffman, John G. ; Ortmanns, Maurits ; Becker, Joachim
Author_Institution :
Dept. of Microelectron., Ulm Univ., Ulm, Germany
fYear :
2012
fDate :
5-8 Aug. 2012
Firstpage :
810
Lastpage :
813
Abstract :
This work presents a reconfigurable continuous-time (CT) ΔΣ analog-to-digital converter (ADC) using a digitally programmable gm-C array. The respective modulator is implemented in a field programmable analog array (FPAA) architecture with an additional operational amplifier as the first stage and a 1-bit quantizer. The hexagonal structure of the FPAA allows up to 7th order lowpass (LP) and up to 3rd order bandpass (BP) ΔΣ structures. At first, the system is implemented as a LTI-model in MATLAB. The feasibility of the proposed design is shown by simulations at transistor-level in TSMC 90 nm CMOS technology.
Keywords :
CMOS integrated circuits; delta-sigma modulation; field programmable analogue arrays; integrated circuit design; mathematics computing; operational amplifiers; ΔΣ-ADC; 3rd order bandpass structures; 7th order lowpass structures; CMOS; FPAA; LTI-model; MATLAB; field programmable analog array architecture; hexagonal structure; modulator; operational amplifier; quantizer; reconfigurable continuous-time ΔΣ analog-to-digital converter; size 90 nm; transistor-level; word length 1 bit; Arrays; Band pass filters; Bandwidth; Field programmable analog arrays; Frequency modulation; Signal to noise ratio;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems (MWSCAS), 2012 IEEE 55th International Midwest Symposium on
Conference_Location :
Boise, ID
ISSN :
1548-3746
Print_ISBN :
978-1-4673-2526-4
Electronic_ISBN :
1548-3746
Type :
conf
DOI :
10.1109/MWSCAS.2012.6292144
Filename :
6292144
Link To Document :
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