A 14b 20mW 640MHz CMOS CT /spl Delta//spl Sigma/ ADC with 20MHz Signal Bandwidth and 12b ENOB

A 3rd-order single-loop CT ΔΣmodulator with a 4b internal quantizer operating at 640MHz achieves 76dB SNR, -78dB THD, and 74dB SINAD in a 20MHz signal bandwidth with an OSR of 16. The modulator operates between 20 to 40MS/S output data rate and dissipates 20mW from a 1.2V supply at 40MS/S. The degra...

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Main Authors: Mitteregger, G., Ebner, C., Mechnig, S., Blon, T., Holuigue, C., Romani, E., Melodia, A., Melini, V.
Format: Conference Proceeding
Language:English
Subjects:
Bandwidth
Clocks
CMOS technology
Computed tomography
Delay
Feedback
Resonator filters
Sampling methods
Stability
Switches
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container_start_page 131
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creator Mitteregger, G.
Ebner, C.
Mechnig, S.
Blon, T.
Holuigue, C.
Romani, E.
Melodia, A.
Melini, V.
description A 3rd-order single-loop CT ΔΣmodulator with a 4b internal quantizer operating at 640MHz achieves 76dB SNR, -78dB THD, and 74dB SINAD in a 20MHz signal bandwidth with an OSR of 16. The modulator operates between 20 to 40MS/S output data rate and dissipates 20mW from a 1.2V supply at 40MS/S. The degradation of stability due to excess loop delay is solved with a quantizer feedback architecture
doi_str_mv 10.1109/ISSCC.2006.1696042
format conference_proceeding
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source IEEE Electronic Library (IEL) Conference Proceedings
subjects Bandwidth
Clocks
CMOS technology
Computed tomography
Delay
Feedback
Resonator filters
Sampling methods
Stability
Switches
title A 14b 20mW 640MHz CMOS CT /spl Delta//spl Sigma/ ADC with 20MHz Signal Bandwidth and 12b ENOB
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