80 MHz bandpass delta-sigma modulator using switched-capacitor resonator structure

Authors
Salo, T Lindfors, S Halonen, K
Citation
T. Salo et al., 80 MHz bandpass delta-sigma modulator using switched-capacitor resonator structure, ELECTR LETT, 37(14), 2001, pp. 877-878
Citations number
4
Categorie Soggetti
Eletrical & Eletronics Engineeing
Journal title
ELECTRONICS LETTERS
ISSN journal
00135194 → ACNP
Volume
37
Issue
14
Year of publication
2001
Pages
877 - 878
Database
ISI
SICI code
0013-5194(20010705)37:14<877:8MBDMU>2.0.ZU;2-4
Abstract
A fully differential 80 MHz fourth-order bandpass Delta Sigma modulator, me ant for a 100 MHz GSM/WCDMA multimode IF receiver, is presented. The modula tor is based on a double-delay single opamp SC-resonator structure which is well suited for low supply voltages. Furthermore, the centre frequency of the topology is insensitive to different component variances. The measured peak SNR is 78 dB and 43.3 dB for 270 kHz (GSM) and 3.84 MHz (WCDMA) bandwi dths, respectively.