Driver circuit

Details Driver circuit Driver circuit

2006-01-05

2009-02-17

Tra, Quan (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Current driver

C327S100000, C326S082000

Reexamination Certificate

active

07492193

ABSTRACT:
A driver circuit that prevents amplitude reduction at a high temperature comprises a differential pre-buffer circuit22for performing signal clamping by diodes16and17each having a nonlinear voltage-current characteristic with respect to an input signal and a differential output circuit23for amplifying output signals of the differential pre-buffer circuit22, for output. The driver circuit further includes a temperature characteristic compensation circuit44for controlling direct currents to be passed through the diodes16and17based on a current to be passed through a diode43having a voltage-current characteristic with the same temperature coefficient as those of the diodes16and17. A current related to constant currents I1and I2is supplied from the temperature characteristic compensation circuit44as a current that cancels the temperature characteristic of a fall in forward voltages of the diodes16and17.

REFERENCES:
patent: 5557223 (1996-09-01), Kuo
patent: 5999041 (1999-12-01), Nagata et al.
patent: 6639425 (2003-10-01), Yazdy
patent: 4-79416 (1992-03-01), None
patent: 5-252020 (1993-09-01), None
patent: 2000-278053 (2000-10-01), None
patent: 2000-341107 (2000-12-01), None
patent: 2001-94354 (2001-04-01), None
patent: 2003-249966 (2003-09-01), None
Japanese Office Action dated Oct. 16, 2007 with partial English translation.

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