SWITCHED POSITIVE FEEDBACK FOR CONTROLLING INPUT IMPEDANCE

摘要

A receiver circuit includes a signal input, for receiving a signal input to a chip; a chip output, for supplying a buffered signal to circuitry on the chip; and a positive feedback circuit, coupled between the chip output and the signal input. The positive feedback circuit may comprise a first inverter, which has an input coupled to the signal input; a second inverter, which has an input coupled to an output of the first inverter; wherein an output of the second inverter provides the chip output.