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A 10-MHz Bandwidth Two-Path Third-Order $\Sigma\Delta$ Modulator With Cross-Coupling Branches.
- Source :
- IEEE Transactions on Circuits & Systems. Part II: Express Briefs; Oct2018, Vol. 65 Issue 10, p1410-1414, 5p
- Publication Year :
- 2018
-
Abstract
- This brief presents a two-path discrete-time third-order sigma-delta ($\Sigma \Delta$) modulator with an extra zero in the noise transfer function (NTF) located at $z = -1$ , reducing the NTF coefficients of intermediate terms for optimal design. Applying polyphase decomposition of the NTF, the proposed $\Sigma \Delta$ modulator is implemented by a two-path architecture with cross-coupling branches. The 65-nm CMOS experimental chip running at a sampling rate of 340 MHz achieves a DR of 68.8 dB and a SNDR of 65.4 dB for a 10-MHz signal bandwidth, occupying an active area of 0.2257 mm2 and consuming 19.47 mW from a 1.2-V supply. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15497747
- Volume :
- 65
- Issue :
- 10
- Database :
- Complementary Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part II: Express Briefs
- Publication Type :
- Academic Journal
- Accession number :
- 132098870
- Full Text :
- https://doi.org/10.1109/TCSII.2018.2859431