Electronic digital logic circuitry – Interface – Current driving
Reexamination Certificate
2007-02-27
2007-02-27
Tan, Vibol (Department: 2819)
Electronic digital logic circuitry
Interface
Current driving
C326S026000, C326S027000, C326S127000, C327S108000, C330S253000
Reexamination Certificate
active
10723256
ABSTRACT:
To output a digital signal in particular according to the LVDS (low voltage differential signalling) standard, a driver stage is supplied with a constant current and thus supplies the digital signal in the form of a current signal with defined current values. As a result of line capacitances of a transmission line, because of the current limited according to the standard the edge steepness and hence the maximum transmittable bit rate can deteriorate. According to the invention, therefore, at least essentially in synchronization with a triggering of the driver stage, at least one current increase signal is generated which via a capacitor causes an additional current increase in the output current of the driver stage. Preferably, the current increase signal via the respective capacitor is switched directly to an output of the driver stage. By using a capacitor, with very little expenditure a limited current pulse can be switched in a temporally targeted manner on the switching processes of the driver stage.
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Icking Henrik
Mauthe Manfred
Brinks Hofer Gilson & Lione
Infineon - Technologies AG
Tan Vibol
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