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US 10,381,076 B2Granted
Circuit and method for configurable impedance array
AssigneeArm Limited
InventorsAzeez Jennudin Bhavnagarwala, Vikas Chandra, Brian Tracy Cline
Life of this patent
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Abstract
A configurable impeder is provided. The configurable impeder comprises of multiple CESs. Each of the CESs is capable of being configured into one of a plurality of impedance states. Further, a programing circuit is provided. The programing circuit provides a plurality of programing signals in dependence of an input signal. Each programing signal configures an impedance state of a respective CES from the plurality of CESs.
Claims15
A device comprising:
- a variable impeder device comprising a plurality of variable impedance elements connected in a series, each of the variable impedance elements being configurable to a non-volatile impedance state between or among a plurality of non-volatile impedance states, the variable plurality of variable impedance elements being connected at terminals to form a series connection of the plurality of variable impedance elements;
- and
- a programming circuit to apply voltages at a plurality of nodes in the series connection of the plurality of variable impedance elements to program at least one of the plurality of variable impedance elements to one of the plurality of non-volatile impedance states responsive to a digital input signal, the programming circuit to determine the voltages to apply at the nodes according to a mapping of the digital input signal to node voltages.
A method comprising:
- generating a plurality of voltage signals according to a mapping of a digital input signal to node voltages;
- and
- applying the plurality of voltage signals to nodes of a series connection of a plurality of variable impedance elements of a variable impeder device, each of the variable impedance elements being configurable to a non-volatile impedance state between or among a plurality of non-volatile impedance states responsive at least in part to the applied voltage signals,
- wherein the variable impedance device comprises a programmed impedance corresponding to the digital input signal.
1 more element
Dependencies are inferred from the claim text.