CMOS LvPECL driver with output level control

Details CMOS LvPECL driver with output level control CMOS LvPECL driver with output level control

2006-08-15

2006-08-15

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S112000

Reexamination Certificate

active

07091754

ABSTRACT:
A differential output driver includes an output block, a replication block, and a feedback control block. Each of the output and replication blocks further includes a preamplifier and a source-follower stage. The preamplifier of the output block receives a differential input voltage and generates a first differential voltage. The source-follower stage of the output block receives the first differential voltage and generates a differential output voltage. The preamplifier of the replication block receives first and second supply voltages and generates a second differential voltage. The source-follower stage of the output block receives the second differential voltage and generates a third differential voltage. The feedback control block receives the third differential voltage and generates a differential control voltage applied to the output block. The generated differential output voltage stays within predefined limits, such as those defined by the LvPECL standard.

REFERENCES:
patent: 5384498 (1995-01-01), Wong
patent: 5614843 (1997-03-01), Mita et al.
patent: 5990711 (1999-11-01), Sekimoto
patent: 6054874 (2000-04-01), Sculley et al.
patent: 6111431 (2000-08-01), Estrada
patent: 6175250 (2001-01-01), Hedberg
patent: 6600346 (2003-07-01), Macaluso
patent: 6624670 (2003-09-01), Payne et al.
patent: 6803798 (2004-10-01), Wei et al.
patent: 6927608 (2005-08-01), Chen et al.

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