Light emitting element driving circuit with current mirror...

Details Light emitting element driving circuit with current mirror... Light emitting element driving circuit with current mirror...

2006-07-11

2006-07-11

Vo, Tuyet Thi (Department: 2821)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

C327S053000, C327S543000, C372S008000, C372S029020, C345S082000, C345S084000

Reexamination Certificate

active

07075338

ABSTRACT:
A light emitting element driving circuit for supplying driving current I2 to a light emitting element10connected to one line2of a current mirror circuit12is equipped with a pulse generating circuit20connected to the other line1so that pulse current flows therethrough, and superposing means30for superposing a first auxiliary pulse current on the pulse current in synchronization with the rise-up time of the pulse current. The rise-up time is shortened by the superposition. In the driving circuit, a source follower circuit is connected to the current mirror circuit, and current flowing through the source follower circuit is set to be substantially proportional to current flowing through the other line of the current mirror circuit.

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Nagahori et al.; “An Analog Front-End Chip Set Employing an Electro-Optical Mixed Design on SPICE for 5-Gb/s/ch Parallel Optical Interconnection”; IEEE Journal of Solid-State Circuits, vol. 36, No. 12, Dec. 2001; pp. 1984-1991.

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