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US 7,199,663 B2Granted
Use of analog-valued floating-gate transistors for parallel and serial signal processing
AssigneeImpinj, Inc.
InventorsChristopher J. Diorio, Todd E. Humes, Ronald A. Oliver, William T. Colleran, Scott A. Cooper
Life of this patent
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Abstract
Analog-valued floating-gate transistors are used as trimmable circuit components for modifying and/or controlling the gain, phase, offset, frequency response, current consumption, and/or transfer function of signal pathways in parallel and/or serial processing circuits in radio frequency, analog, or mixed-signal integrated circuits.
Claims5
An circuit, comprising:
- a signal input node;
- a signal output node;
- a transistor having a source, a drain, and a floating gate, the drain of the transistor configured for electrical coupling to said signal output node, and the floating gate of the transistor configured for electrical coupling to said input;
- and
- a trimmable MOS resistor coupled between the drain and floating gate of the transistor, the trimmable MOS resistor having a MOS floating gate and providing a variable resistance value based on an amount of electrical charge stored on said MOS floating gate.
2 more elements
Dependencies are inferred from the claim text.