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US 7,679,455 B2Granted
Technique for expanding an input signal
AssigneeSilicon Laboratories Inc.
InventorsYunteng Huang, Rex T. Baird, Michael H. Perrott
Life of this patent
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Abstract
A technique for expanding an input signal includes receiving the input signal at a first node of a voltage expander and generating a plurality of expanded signals on different outputs of the voltage expander responsive to the input signal. In certain embodiments, each of the expanded signals has a different magnitude at a respective fixed offset from the input signal.
Claims19
A circuit comprising:
- a first node responsive to an input signal;
- and
- a plurality of circuit branches, each comprising a respective resistor element coupled to the first node and arranged to develop a respective signal having a respective fixed offset relative to the first node, which fixed offset is determined by a respective controlled magnitude current flowing through the respective resistor element;
- wherein each respective signal is conveyed to a respective one of a plurality of outputs,
- wherein certain ones of said plurality of circuit branches cause a current to flow into the first node, and remaining ones of said plurality of circuit branches cause a current to flow from the first node.
2 more elements
A circuit comprising:
- a first node responsive to an input signal;
- and
- means for generating a plurality of expanded signals on a corresponding plurality of outputs, each of the expanded signals having a respective magnitude at a respective fixed offset from that of the first node, wherein the magnitude of each of the expanded signals is related to the input signal when such expanded signal is within a certain range.
A method for expanding an input signal, said method comprising:
- providing a first node responsive to an input signal;
- and
- developing a plurality of signals, each respective signal having a respective fixed offset relative to the first node, which fixed offset is determined by flowing a respective controlled magnitude current through a respective resistor element;
- conveying each respective signal to a respective one of a plurality of outputs,
- wherein the output signals are output voltages and the input signal is an input voltage, and wherein the output voltages are nominally centered about the input voltage.
2 more elements
Dependencies are inferred from the claim text.