Digital/analog converting device and method
A digital-to-analog conversion and conversion technology, applied in the field of digital-to-analog conversion devices, can solve problems such as increasing the overall area of a current source structure, and achieve the effect of avoiding a large area
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[0032] Please refer to image 3 , which is an embodiment of the current output device of the present invention. As shown in the figure, the current output device 100 includes a current source 110 , a signal generating circuit 120 and shunt circuits 130 , 140 . The current source 110 has an output terminal X, and outputs a supply current I P . In this embodiment, the current source 110 includes a current mirror circuit composed of a transistor T1 and a transistor T2, wherein the size ratio (W / L) of the transistor T2 is N times the size ratio (W / L) of the transistor T1, Therefore, the supply current I generated by the output terminal X of the current source 110 P will be the reference current I flowing through transistor T1 REF However, this is an embodiment of the present invention, not a limitation of the present invention; in other embodiments of the present invention, the current source 110 can also be implemented in a manner other than a current mirror circuit.
[0033...
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