Current cell type digital-analog converter

Details Current cell type digital-analog converter Current cell type digital-analog converter

1996-03-27

1998-06-02

Young, Brian K.

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

H03M 166

Patent

active

057607257

ABSTRACT:
A current cell type digital-analog (DA) converter is situated in the end portion of a semiconductor chip and adapted to outputting an analog signal having resolution corresponding to the number of bits of an input digital signal. The current cell type DA converter is provided with a decoder for decoding the digital signal and outputting the decoded signal, and a current cell block in which a plurality of current cells corresponding to the resolution of the analog signal are arranged in a row and each of the current cells is controlled by the decoded signal. The centrally-positioned current cell out of those arranged in a row is turned on when the digital signal is odd-numbered and turned off when it is even-numbered. With the centrally-positioned current cell as the central element, current cell pairs disposed on both symmetrical sides of the centrally-positioned current cell are simultaneously turned on or off on a current cell pair basis according to the digital signal.

REFERENCES:
patent: 5057838 (1991-10-01), Tsuji et al.
patent: 5164725 (1992-11-01), Long
patent: 5541598 (1996-07-01), Malek-Khosravi

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