Patent ID: 7898450
Filing Date: 2011-03-01
Classification: H03M

Abstract:
1. An analog signal processing device comprising: a voltage selector selecting a given comparison reference voltage from plural comparison reference voltages; an arithmetic unit arithmetically processing the given comparison reference voltage and an analog input signal; a comparator which has at least one or more judgment points for the plural comparison reference voltages and to which an output of the arithmetic unit is inputted; and a coupling controller controlling connections between the arithmetic unit and the comparator, wherein: the arithmetic unit comprises correctable first signal processors, and the number of the first signal processors is more than is necessary for the plural comparison reference voltages by M or larger (where M is a natural number); and when a set of N (where N is a natural number and N≦M) of first signal processors are in a correction operation, the coupling controller connects first signal processors which are not in the correction operation in the arithmetic unit to the comparator.