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Design of Baseband Digital Delta-Sigma Modulators in 180nm CMOS
- Source :
- IEEE Latin America Transactions. 13:1272-1278
- Publication Year :
- 2015
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2015.
-
Abstract
- This article presents a 3rd Order 1-bit ΔΣ modulator optimized for applications requiring high effective resolution and linearity within the 20-kHz band. Furthermore, this work also describes architectural approaches for designing modulators with different order, oversampling rate, and number of quantization bits. Such approaches can be leveraged in a variety of applications in digital signal processing for data communications, filters, motor controllers, data acquisition, high-fidelity audio, DACs, and others operating in baseband. The 3rd Order modulator was implemented in standard 180nm CMOS; experimental measurements show a SNDR=126dB equivalent to 20-bits of effective resolution with a total harmonic distortion THD=0.03%. The circuit is able to operate in low-voltage conditions from 0.55 to 1.8 Volts.
- Subjects :
- Total harmonic distortion
General Computer Science
Computer science
business.industry
Quantization (signal processing)
Electrical engineering
Audio bit depth
Delta-sigma modulation
CMOS
Hardware_INTEGRATEDCIRCUITS
Electronic engineering
Baseband
Oversampling
Electrical and Electronic Engineering
business
Digital signal processing
Subjects
Details
- ISSN :
- 15480992
- Volume :
- 13
- Database :
- OpenAIRE
- Journal :
- IEEE Latin America Transactions
- Accession number :
- edsair.doi...........fb8be4207788ea776a6588d238fc012e