A Digital Differential Transmitter with Pseudo-LVDS Output Driver and Digital Mismatch Calibration

Jun-Hyun BAE  Sang-Hune PARK  Jae-Yoon SIM  Hong-June PARK  

IEICE TRANSACTIONS on Electronics   Vol.E93-C   No.1   pp.132-135
Publication Date: 2010/01/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E93.C.132
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Electronic Circuits
differential,  digital transmitter,  termination,  

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A digital 3 Gbps 0.2 V differential transmitter is proposed using a voltage-mode pseudo-LVDS output driver. The delay mismatch between two pre-drivers is digitally calibrated by a modified digital DLL with the duty cycle correction. The height and width of eye opening are improved by 103% and 46%, respectively. The power consumption is 11.4 mW at 1.2 V with 0.18 µm process.