Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Patent
1997-11-06
1999-07-27
Williams, Howard L.
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
341141, H03M 166
Patent
active
059297980
ABSTRACT:
A high speed and low power D/A converter which is capable of accurately outputting an analog value and implementing a high speed operation by reducing noise and errors during the conversion. The converter includes an upper current cell plate for forming analog voltages from a 126th level to a 255th level in accordance with decoding of inputted digital values by a first column decoder and a first row decoder, a lower current cell plate for forming analog voltages from a 0th level to a 125th level in accordance with decoding of the inputted digital values by a second column decoder and second row decoder, and a multiplexer for selectively outputting the analog voltage from the upper current cell plate or the lower current cell plate in accordance with a binary bit value of a most significant bit (MSB) of the inputted digital signal.
REFERENCES:
patent: 4430642 (1984-02-01), Weigand et al.
patent: 4503421 (1985-03-01), Hareyama et al.
patent: 4904922 (1990-02-01), Colles
patent: 4910514 (1990-03-01), Imer et al.
patent: 5689259 (1997-11-01), Ozguc
LG Semicon Co. Ltd.
Williams Howard L.
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