High Speed Differential Line Driver (HIGH-SPEED, DIFFERENTIAL LINE DRIVER)

摘要

The data transceiver includes a transceiver connected to one end of the data transmission line and a receiver connected to the other end of the data transmission line. At least some parts of the transceiver are formed of CM0S. A temperature compensation circuit is connected to the selected component of the transceiver to correct for temperature induced changes in current through the component. The temperature compensation circuit includes a pair of transistors each connected to a parallel conductive path. The transistors have unequal emitter regions, the gates of which are tied together. The current through the larger transistor changes in proportion to the temperature, which is reflected in the current mirror transistor connected to the short gate of the transistor pair. In CM0S technology, the current changes in inverse proportion to temperature, and the current through the mirror transistor can be used as a means to provide temperature compensation for selected components of the transceiver.