ANALOG-DIGITAL CONVERTER FOR PROVIDING REFERENCE VOLTAGE BY USING ANALOG MEMORIES INSTEAD OF SERIAL RESISTORS, CAPABLE OF REDUCING POWER CONSUMPTION

摘要

PURPOSE: An analog-digital converter for providing a reference voltage by using analog memories instead of serial resistors is provided to reduce the size and the power consumption by using the analog memories instead of the serial resistors. CONSTITUTION: An analog-digital converter includes a plurality of analog memories, a plurality of comparators, and a decoder. The analog memories(M1-Mn) are composed of injectors and transistors in order to provide predetermined voltages. The comparators(comp1-compn) are used for receiving external signals and a reference voltage from one of analog memories and comparing the external signals with the reference voltage. The decoder(211) is used for outputting a digital signal by combining output signals of the comparators.