Digital-to-analog converter of the current-adding type

Details Digital-to-analog converter of the current-adding type Digital-to-analog converter of the current-adding type

1983-03-29

1985-09-03

Miska, Vit W.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1305

Patent

active

045395535

ABSTRACT:
A digital-to-analog converter of the current-adding kind includes n input buffer circuits to which the bits of the digital signal are applied in parallel, a first ladder resistor network having n resistors connected in series to which complementary outputs of the input buffer circuit are connected, a second ladder resistor network for dividing output terminal voltages from the first ladder resistor network into 2(2.sup.n -1) voltages, (2.sup.n -1) switching circuits having inputs connected to voltage dividing points of the second resistor network, and a common summing resistor connected to the outputs of the switching circuits to add currents supplied thereto, thereby providing an analog voltage having a level corresponding to the numerical value of the digital input signal.

REFERENCES:
patent: 4034366 (1977-07-01), Memishian, Jr.
patent: 4160244 (1979-07-01), Solomon et al.
patent: 4338591 (1982-07-01), Tuthill
patent: 4354175 (1982-10-01), Goldstein
patent: 4396907 (1983-08-01), Wintzer et al.
patent: 4492954 (1985-01-01), Harris et al.

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