Driving circuit with load calibration and the method thereof

Details Driving circuit with load calibration and the method thereof Driving circuit with load calibration and the method thereof

2011-04-26

2011-04-26

Tan, Vibol (Department: 2819)

Electronic digital logic circuitry

Signal sensitivity or transmission integrity

Bus or line termination

C326S026000, C326S086000, C327S108000

Reexamination Certificate

active

07932740

ABSTRACT:
A driving circuit includes: a first reference current source injects a reference current; each first switch unit is coupled between the first reference current source and one of first and second output ports; a second reference current source sinks the reference current; each second switch unit is coupled between the second reference current source and one of the output ports; a load unit is coupled between the output ports, and a common voltage is applied onto the load unit; and a calibration module calibrates an impedance of the load unit according to a voltage at one of the output ports, and the voltage is generated due to the reference current passing through one of the first switch units, the load unit, and one of the second switch units.

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