Patent ID: 8786365
Filing Date: 2014-07-22
Classification: H03F,H03G

Abstract:
1. A decision feedback equalizer, comprising: a plurality of amplifying latch modules, configured to output a plurality of output signals according to an input signal, wherein the plurality of amplified latch modules comprise: an amplifier circuit, configured to provide an amplifying signal of the input signal; and a latch, configured to latch the amplifying signal as one of the plurality output signals; wherein the amplifier circuit is configured to adjust its driving capability according to an output signal of another latch and a control signal, and the amplifier circuit is a differential amplifier circuit, comprising: a transistor pair, configured to provide an amplifying signal of the input signal, and an amplifying signal of an inverse signal of the input signal, a current source connecting to the transistor pair, configured to be a current source of the amplifier circuit, and a feedback module connecting to the transistor pair and configured to increase driving capability of the amplifier circuit according to an output signal of another amplifying latch module.