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US 6,208,278 B1Granted
System and method for logarithmic digital to analog conversion
AssigneeInfineon Technologies North America Corp.
InventorZabih Toosky
Life of this patent
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Abstract
The present invention relates to digital to analog conversion. According to an embodiment of the present invention, a logarithmic transfer characteristic may be produced by subtracting a fraction of the output current to a reference current in a recursive equation.
Claims17
A system for a digital to analog conversion, comprising:
- a digital to analog conversion circuit;
- and
- a node coupled to the digital to analog conversion circuit, wherein a fraction of an output current is subtracted from a reference current at the node to provide a nonlinear transfer characteristic.
A method for a digital to analog conversion comprising:
- providing a reference current;
- providing an output current;
- and
- subtracting a fraction of the output current from the reference current, wherein the digital to analog conversion is intentionally nonlinear.
1 more element
Dependencies are inferred from the claim text.