Infineon Technologies Ag

Volkmar Rebmann

David Christoph Müller

The present invention is a converter stage for converting a differential logic input signal and a corresponding common mode differential logic signal each having a first single-ended logic signal and a complementary second single-ended logic signal into a single-ended logic output signal. The converter stage comprises a first and a second differential stage each having a first and a second MOS transistor and a first and second current source for the differential stages. According to the invention the current sources are controlled by the voltage level which is centered between the mid-potentials of the common mode level differential logic signal and the mid-potential of the differential logic input signal.

Differential to single-ended logic converter

The configuration described is distinguished by the fact that it contains a control device which ensures that the potential which is established on the current-source side terminal of the switch when the latter is open has the value which it would have if the switch were to be closed, under otherwise unchanged conditions, and if the current output by the current source were to flow through said switch. As a result, it is possible for the current output by the configuration always to be as large as desired, in particular even immediately directly after the closure of the switches P and N , more precisely exactly the current output by the current sources P and N

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Munich, Germany

Volkmar Rebmann