HIGH-SPEED LOW POWER V/I CONVERTER FOR CLOCK AND DATA RECOVERY CIRCUIT

摘要

In the present invention, suggested is a V/I converter for a clock and data recovery circuit for high speed and low power operations. Clock signals are generated by comparing the clock information of data with reference clock information through a phase detector which does not require XOR logic, and a control voltage is generated through the V/I converter which directly uses the clock signals as an input. The phase detector compares the clock information using four latches. The latch reduces current consumption by making a current flow for a half period of the clock and obtains a large gain by removing an inverter which is alternatively connected to store the data. The latch is connected with a cascade method and outputs the output data of the same pattern as an input pattern.