Patent ID: 7006026

Claim:
A digital-to-analog converting circuit that converts digital data into an analog current, comprising: a first digital-to-analog converting circuit portion that receives first digital data and that converts the first digital data into a first analog current; and a second digital-to-analog converting circuit portion that receives second digital data and that processes the first analog current based on the second digital data to output a second analog current, the first digital-to-analog converting circuit portion further including: a first diode-connected transistor having a first control terminal; a plurality of second transistors each having a second control terminal, the second control terminals being coupled to the first control terminal; a plurality of third transistors having third control terminals that are coupled to a plurality of signal lines to receive the first digital data, the plurality of third transistors being coupled in series to the plurality of second transistors; and a first current path that, when the plurality of third transistors are turned on by the first digital data, outputs a current output from the corresponding second transistors from a first output terminal to the second digital-to-analog converting circuit portion as the first analog current.