ACCURATE SI FILTERS USING RGC INTEGRATORS

Authors
GOLDENBERG M CROMAN R FIEZ TS
Citation
M. Goldenberg et al., ACCURATE SI FILTERS USING RGC INTEGRATORS, IEEE journal of solid-state circuits, 29(11), 1994, pp. 1388-1395
Citations number
15
Categorie Soggetti
Engineering, Eletrical & Electronic
Journal title
IEEE journal of solid-state circuits → ACNP
ISSN journal
00189200
Volume
29
Issue
11
Year of publication
1994
Pages
1388 - 1395
Database
ISI
SICI code
0018-9200(1994)29:11<1388:ASFURI>2.0.ZU;2-U
Abstract
The design and implementation of single-ended and fully-differential s witched current (SI) biquadratic high-Q band-pass filters to meet the specifications of the dual-tone multiple-frequency (DTMF) system are p resented. Both designs use the regulated-gate cascode (RGC) dynamic cu rrent mirror to obtain center frequency accuracy of 0.1% and a quality factor of 24. Compared to the equivalent switched capacitor (SC) impl ementation of these filters, the single-ended SI filter requires 30% l ess area for the same minimum-sized capacitance, power dissipation and performance.