Differential line receiver

Details Differential line receiver Differential line receiver

2008-01-22

2008-01-22

Barnie, Rexford (Department: 2819)

Electronic digital logic circuitry

Interface

Current driving

C326S115000

Reexamination Certificate

active

07321239

ABSTRACT:
In a differential line receiver circuit having differential amplifier circuit where output rise and fall times are influenced by the ability of internal current sources to charge parasitic capacitances, a feedback circuit is provided to tune those current sources so as to deliver equal rise and fall time on both outputs. According to one embodiment a detector signal is derived from timing errors resulting from such rise and fall time discrepancies by means of a nested CMOS inverter arrangement coupled to an integrating element, and then used to control one or both of said current sources. It is further disclosed how deviations in the center voltage of the internal power supplies caused by the current source tuning can be allowed for by pre-processing of the signal at the input of the differential line receiver circuit by means of a differential signal transfer circuit which is able to impose a common mode signal on the input signal so as to match the center voltage of the differential amplifiers internal power supply.

REFERENCES:
patent: 4714895 (1987-12-01), Nicollini et al.
patent: 5304856 (1994-04-01), Rainal
patent: 6236242 (2001-05-01), Hedberg
patent: 42 18 533 (1992-12-01), None
patent: 38 71 614 (1993-01-01), None
patent: 42 23 845 (1993-01-01), None
patent: 41 33 243 (1993-04-01), None
patent: 38 89 085 (1994-07-01), None
patent: 44 21 072 (1995-12-01), None
patent: 0 297 715 (1989-01-01), None
patent: 0 690 564 (1996-01-01), None
patent: 0 840 442 (1998-05-01), None
International Preliminary Examination Report mailed Jun. 11, 2004 in corresponding PCT Application No. PCT/EP02/07186.
International Search Report mailed Aug. 30, 2001 in corresponding EP application No. 01115699.9-2214.

Affiliated with

Also associated with

Rating

Differential line receiver does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Differential line receiver, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential line receiver will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2808427