Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2005-08-30
2005-08-30
Williams, Howard L. (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S144000
Reexamination Certificate
active
06937178
ABSTRACT:
Digital to analog converter circuits and methods are provided for producing an analog output voltage indicative of a digital input signal with at least partial insensitivity to error gradients. Described are split-core resistive elements, which include a plurality of one-dimensional or multi-dimensional resistive strings, that may be used to reduce or substantially eliminate the effects that error gradients have on the linearity of the analog output voltages of a resistive string or interpolating amplifier DACs. The resistor strings that make up the split-core resistive elements are configured in such a manner that combining respective output voltages from each of the resistor strings results in an analog output voltage that is at least partially insensitive to the effects of error gradients.
REFERENCES:
patent: 4782323 (1988-11-01), Lucas
patent: 4864215 (1989-09-01), Schouwenaars et al.
patent: 5274373 (1993-12-01), Kanoh
patent: 5396245 (1995-03-01), Rempfer
patent: 5859606 (1999-01-01), Schrader et al.
patent: 6181263 (2001-01-01), Malik et al.
patent: RE38083 (2003-04-01), Ashe
patent: 2002/0080054 (2002-06-01), Harada et al.
patent: 0 472 372 (1992-02-01), None
patent: 11-145835 (1999-05-01), None
Brubaker James L.
Malik Hassan
Rempfer William C.
Chang Chi-Hsin
Fish & Neave IP Group Ropes & Gray LLP
Linear Technology Corporation
Rowland Mark D.
Williams Howard L.
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