Patent ID: 7663410
Filing Date: 2010-02-16
Classification: H04L

Abstract:
1. A current-mode differential transmitter receiving a single-end input voltage signal, and accordingly generating a differential output current signal, the transmitter comprising: a first switch coupled in a first current path and controlled by the single-end input voltage signal; a second switch coupled in a second current path and controlled by an inverted signal of the single-end input voltage signal; a third switch having one end receiving a supply voltage and the other end coupled to one end of the first switch, and controlled by the inverted signal of the single-end input voltage signal; and a current mirror mirroring a reference current to the first current path when the first switch is turned on, and mirroring the reference current to the second current path when the second switch is turned on; wherein the differential output current signal is derived from the currents on the first and second current paths.