Patent ID: 7456767
Filing Date: 2008-11-25
Classification: G09G,H03M

Abstract:
1. A D/A converter circuit, which includes a first current mirror circuit having a plurality of output side transistors provided correspondingly to digits of data to be converted and generates an analog current by obtaining in at least one of the output side transistors a current corresponding to weight of a digit of the data, comprising: a second current mirror circuit connected on an upstream or downstream side of at least one of the output side transistors corresponding to a lower digit of the data, wherein an operating current ratio of the output side transistor of the second current mirror circuit with respect to an input side transistor thereof is set to n:1(where n is a positive integer) and the analog current is generated by obtaining a current corresponding to a weight of the lower digit, which is less than 1, on the output side transistor of the second current mirror circuit.