DocumentCode
1807970
Title
A novel double sampled chopper stabilised integrator for switched capacitor ΣΔ modulators
Author
O´Connell, I.J. ; Lyden, Colin
Author_Institution
Dept. of Microelectron., Univ. Coll. Cork, Ireland
Volume
4
fYear
2002
fDate
2002
Abstract
A fully floating double sampled chopper stabilised integrator is proposed, with redundant switches removed. The fully floating arrangement moving sums the input to the switched capacitor integrator. The ΣΔ modulator loop is modified to counteract the moving sum effect on the feedback signal such that the noise shaping performance remains unchanged.
Keywords
choppers (circuits); circuit feedback; circuit stability; integrating circuits; modulators; sigma-delta modulation; switched capacitor networks; ΣΔ modulator loop modification; SC sigma-delta modulator; chopper stabilised integrator; double sampled integrator; feedback signal; fully floating arrangement; moving sum effect; noise shaping performance; switched capacitor integrator; Capacitors; Choppers; Circuits; Feedback loop; Frequency; Low-frequency noise; Noise shaping; Operational amplifiers; Sampling methods; Switches;
fLanguage
English
Publisher
ieee
Conference_Titel
Circuits and Systems, 2002. ISCAS 2002. IEEE International Symposium on
Print_ISBN
0-7803-7448-7
Type
conf
DOI
10.1109/ISCAS.2002.1010532
Filename
1010532
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