DocumentCode
3414165
Title
A 2GS/s 3b ΔΣ-modulated DAC with a tunable switched-capacitor bandpass DAC mismatch shaper
Author
Jensen, J.F. ; Fields, C.H. ; Chang, M.F.
fYear
2004
fDate
15-19 Feb. 2004
Firstpage
366
Abstract
A 3b ΔΣ-modulated mismatch-shaped DAC is presented. The mismatch shaper uses 7 tunable 1.5b switched-capacitor bandpass ΔΣ modulators to dynamically route the digital signals to the DACs. The DAC can generate narrowband signals from 250 to 750MHz with ≥68dB SNR, ≥74dB SFDR, and -80dBc intermodulation distortion.
Keywords
band-pass filters; bipolar integrated circuits; delta-sigma modulation; intermodulation distortion; switched capacitor filters; 250 to 750 MHz; Gilbert cell; HBT process; delta-sigma-modulated DAC; intermodulation distortion; mismatch-shaped DAC; narrowband signals; router architecture; switched-capacitor bandpass modulator; tunable mismatch shaper; Decoding; Delay; Digital modulation; Frequency; Shape control; Signal generators; Switches; Transconductors; Tunable circuits and devices; Voltage;
fLanguage
English
Publisher
ieee
Conference_Titel
Solid-State Circuits Conference, 2004. Digest of Technical Papers. ISSCC. 2004 IEEE International
ISSN
0193-6530
Print_ISBN
0-7803-8267-6
Type
conf
DOI
10.1109/ISSCC.2004.1332746
Filename
1332746
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