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Data-Dependent Selection of Amplitude and Phase Equalization in a Quarter-Rate Transmitter for Memory Interfaces.
- Source :
-
IEEE Transactions on Circuits & Systems. Part I: Regular Papers . Sep2020, Vol. 67 Issue 9, p2972-2983. 12p. - Publication Year :
- 2020
-
Abstract
- We combine 2-tap feed-forward amplitude equalization with phase equalization by 4-tap integrated pulse-width modulation. In a $\text{V}_{\mathbf {SS}}$ -terminated transmitter, amplitude equalization is selected for pull-up data transmission, and phase equalization for pull-down data transmission, and the strength of equalization can be controlled depending on channel losses. This combines the strength of amplitude equalization with the energy efficiency of phase equalization. A prototype quarter-rate transmitter for memory interfaces, fabricated in a 65nm CMOS process, performed single-ended signaling at a data-rate of 16Gb/s/pin over a channel with a loss of 14.7dB. Its energy efficiency is 1.04pJ/bit/pin and the figure-of-merit is 0.070pJ/bit/pin/dB. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15498328
- Volume :
- 67
- Issue :
- 9
- Database :
- Academic Search Index
- Journal :
- IEEE Transactions on Circuits & Systems. Part I: Regular Papers
- Publication Type :
- Periodical
- Accession number :
- 145399748
- Full Text :
- https://doi.org/10.1109/TCSI.2020.2987052