Title:
HIGH PERFORMACE LVDS DRIVER FOR SCALABLE SUPPLY
Document Type and Number:
WIPO Patent Application WO/2011/056852
Kind Code:
A3
Abstract:
An apparatus has a first supply rail (VDD) supplying a voltage between about 1.8V and about 3.3V; a second supply rail (Vss); and an input stage (302) coupled between that first and second supply rails that receives a differential input signal (INP, INM). The input stage includes at least one differential input pair of complementary metal oxide semiconductor (CMOS) transistors (M5, M6). A first output stage (304) is coupled to the input stage and to at least one of the first and second supply rails. The first output stage includes a plurality of diode-connected transistors (Ql, Q2). A second output stage (306) is coupled between the first and second supply rails and to the first output stage. The second output stage includes a first plurality of transistors (Q3, Q4). A third output stage (308) is coupled between the first and second supply rails and to the first and second output stages. The third output stage includes a second plurality of transistors (Q5, Q6) and a pair of differential output terminals (OUTP, OUTM)coupled to each of the second and third stages. The pair of differential output terminals carry a differential current that travels in a first direction and is supplied through the second output stage when the differential input signal is in a first state, and travels in a second direction and is supplied through the third output stage when the differential input signal is in a second state.
Inventors:
BHAKTA BHAVESH G (US)
MORGAN MARK W (US)
MORGAN MARK W (US)
Application Number:
PCT/US2010/055276
Publication Date:
August 18, 2011
Filing Date:
November 03, 2010
Export Citation:
Assignee:
TEXAS INSTRUMENTS INC (US)
BHAKTA BHAVESH G (US)
MORGAN MARK W (US)
TEXAS INSTRUMENTS JAPAN (JP)
BHAKTA BHAVESH G (US)
MORGAN MARK W (US)
TEXAS INSTRUMENTS JAPAN (JP)
International Classes:
H03K19/0175; H04L25/02
Foreign References:
| US6791377B2 | 2004-09-14 | |||
| US20030085737A1 | 2003-05-08 | |||
| US20080136464A1 | 2008-06-12 | |||
| KR20070112937A | 2007-11-28 |
Attorney, Agent or Firm:
FRANZ, Warren, L. et al. (Deputy General Patent CounselP.O. Box 655474, Mail Station 399, Dallas TX, US)
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