Patent Number: 6,310,568

Title: Digital-to-analog conversion circuit

Abstract: A digital-to-analog conversion circuit includes first and second MOS transistors. The first MOS transistors have different sizes corresponding to bits in received digital data, and apply a weight to an input current by switching and outputting a weighted current. The second MOS transistors also have different sizes corresponding to the bits in the digital data, and apply a weight to a current input to the first MOS transistors that are turned ON by switching. The second MOS transistors apply the weight so that the sum of the currents output from the first MOS transistors has a non-linear characteristic.

Inventors: Kurooka; Kazuaki (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: H03M 1/66 (20060101); H03M 1/74 (20060101); H03M 001/66 ()

Expiration Date: 10/30/2018