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This paper presents the design and implementation of a low power, low voltage, continuous time delta sigma modulator for audio band in 90 nm CMOS technology. A VCO-based integrator and quantizer are used. Inherent dynamic element matching (DEM) of the quantizer eliminates the need for explicit DEM logic which results in a short excess-delay and power saving. Simulation results show that the modulator achieves 78 dB SNDR and 87 dB SNR in a 20 kHz input bandwidth and dissipates 106 μW from 1 V supply. The power consumption for different parts is discussed.
Published in:
Electronics, Circuits and Systems (ICECS), 2011 18th IEEE International Conference on
Date of Conference: 11-14 Dec. 2011
- Page(s):
- 232 - 235
- E-ISBN :
- 978-1-4577-1844-1
- Print ISBN:
- 978-1-4577-1845-8
- INSPEC Accession Number:
- 12488257
- Conference Location :
- Beirut
- Digital Object Identifier :
- 10.1109/ICECS.2011.6122256
- Product Type:
- Conference Publications
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