Two stage weighted capacitor digital to analog converter

Details Two stage weighted capacitor digital to analog converter Two stage weighted capacitor digital to analog converter

1985-03-07

1986-10-07

Miska, Vit W.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1303

Patent

active

046162127

ABSTRACT:
A weighted capacitor digital to analog converter is disclosed which requires two stages but only one conversion step. By the use of an applied reference voltage and two groups of capacitors, the outputs of each group being coupled to an amplifier and feedback capacitor circuit, various capacitors in these groups can be selectively switched from the reference voltage to ground potential in response to input binary digit signals thereby presenting a predetermined amount of voltage to the output amplifiers depending upon the number and particular combination of capacitors switched or non-switched to ground.

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"A Segmented .mu.-255 Law PCM Voice Encoder Utilizing NMOS Technology", IEEE Journal of Solid State Circuits, vol. SC-11, No. 6, 12/76.

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