Single bit DAC with tristate driver

Details Single bit DAC with tristate driver Single bit DAC with tristate driver

2008-01-22

2008-01-22

Young, Brian (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S144000

Reexamination Certificate

active

07321328

ABSTRACT:
A method for producing an analog output from a digital input is described. A digital pulse train is received having an average value which is proportional to a digital conversion value. The digital pulse train is driven at a periodic interval to produce a modulated tristate-gate output. The modulated tristate-gate output is averaged to produce an analog output. Optionally, the pulse train is also driven at an additional periodic interval having a duty cycle of more, or less, than less than 50%. The pulse train may also be driven steadily.

REFERENCES:
patent: 5337338 (1994-08-01), Sutton et al.
patent: 6172633 (2001-01-01), Rodgers et al.
patent: 6362766 (2002-03-01), Rowan et al.
patent: 7098833 (2006-08-01), Stulik et al.

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