REFERENCE VOLTAGE GENERATOR FOR COMPENSATING ERROR OF REFERENCE VOLTAGE AND AUTOMATIC GAIN CONTROLLER USING THE SAME

摘要

PURPOSE: A reference voltage generator for compensating an error of a reference voltage and an automatic gain controller using the same are provided to compensate a processing error and a design error by controlling variably a take-over point in a process for generating the reference voltage. CONSTITUTION: A reference voltage generator for compensating an error of a reference voltage includes a resistor array, a decoder(231), a switching controller(232), and a mode selector(233). The resistor array is used for outputting the reference voltage which is decided by a resistance ratio connected between a power source and the ground. The decoder(231) is used for encoding reference voltage selection signals to switching data. The switching controller(232) is used for outputting control signals of plural switches according to the switching data of the decoder(231). The mode selector(233) is used for shifting take-over points according to an error correction request.