Coded data generation or conversion – Analog to or from digital conversion – Digital to analog conversion
Reexamination Certificate
2008-07-22
2008-07-22
Nguyen, Khai M (Department: 2819)
Coded data generation or conversion
Analog to or from digital conversion
Digital to analog conversion
C341S136000, C341S144000, C341S172000
Reexamination Certificate
active
07403148
ABSTRACT:
The linearity of switched-capacitor, pipeline digital to analog converters is improved by balancing the settling behavior of its pre-charge switches. In more detail, a switched capacitor DAC includes a number of substantially identical cells, one cell for each bit of an input digital word. A number of switch driver circuits are used to apply respective switch control signals to turn respective switches on and off. Advantageously, the switch control signals differ by an amount determined to equalize the gate-to-source voltage difference between different switches.
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Edgewater Computer Systems, Inc.
Hamilton Brook Smith & Reynolds P.C.
Nguyen Khai M
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