Digital-analog conversion apparatus and method

摘要

An apparatus and a method for digital-analog conversion are provided. The apparatus includes a first cell matrix for outputting a current of a signal corresponding to a number of Most Significant Bits (MSBs) of an input digital signal, a second cell matrix for outputting a current of a signal corresponding to a number of Least Significant Bits (LSBs) of the input digital signal, an amplifier for amplifying the output current of the second cell matrix at a preset amplification, and an adder for adding the output current of the first cell matrix and the output current of the amplifier.

主权项

1. An apparatus for digital-analog conversion, the apparatus comprising:
a first cell matrix configured to output a current of a signal corresponding to a number of Most Significant Bits (MSBs) of an input digital signal; a second cell matrix configured to output a current of a signal corresponding to a number of Least Significant Bits (LSBs) of the input digital signal; an amplifier configured to amplify the output current of the second cell matrix at a preset amplification; an adder configured to add the output current of the first cell matrix and the output current of the amplifier; and an error detector configured to detect a fabrication error, when the apparatus is turned on, by comparing an amount of the output current of the adder with an amount of the output current of the first cell matrix, wherein the adder amplifies the output current of the second cell matrix.