A SWITCHED-CAPACITOR DELTA-SIGMA MODULATOR WITH REDUCED SENSITIVITY TO OP-AMP GAIN

Authors
HURST PJ LEVINSON RA BLOCK DJ
Citation
Pj. Hurst et al., A SWITCHED-CAPACITOR DELTA-SIGMA MODULATOR WITH REDUCED SENSITIVITY TO OP-AMP GAIN, IEEE journal of solid-state circuits, 28(6), 1993, pp. 691-696
Citations number
12
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE journal of solid-state circuits → ACNP
ISSN journal
00189200
Volume
28
Issue
6
Year of publication
1993
Pages
691 - 696
Database
ISI
SICI code
0018-9200(1993)28:6<691:ASDMWR>2.0.ZU;2-W
Abstract
Low op-amp gain can degrade the performance of a switched-capacitor de lta-sigma modulator (DELTASIGMAM). A DELTASIGMAM that incorporates a n ew gain-compensated switched-capacitor integrator is described. The re sulting DELTASIGMAM topology has reduced sensitivity to op-amp gain. S imulation and measured results for an experimental DELTASIGMAM are pre sented that demonstrate the advantages of the new architecture.