Continuously Variable Integrated Analog Resistor
Reduced costs for companies using integrated circuits because the circuits can be reused for multiple purposes and fixed resistors do not need to be assembled onto integrated circuit boards. Resistive value changes dynamically through a series of electrical bursts so it can be used in devices that have a requirement for a variable resistor. Holds resistive value when power is turned off so it can be part of circuits that have low energy requirements.
Boise State University has invented an integrated circuit variable resistor with the ability to continuously change resistance values and to maintain those values in the absence of applied power. This device is a resistor made of an alloy that can be manufactured in an integrated circuit and have its resistive value changed dynamically though a series of electrical bursts. It will then hold its resistive value, without applied power, until changed again. It is superior to existing resistor technologies since existing resistor technologies have a fixed resistance or require constant power in order to maintain a resistive value.
Patent Number: US8238146B2
Application Number: US2009534818A
Inventor: Campbell, Kristy A.
Priority Date: 1 Aug 2008
Priority Number: US8238146B2
Application Date: 3 Aug 2009
Publication Date: 7 Aug 2012
IPC Current: G11C001100
US Class: 365159 | 365148
Assignee Applicant: Boise State University,Boise
Title: Variable integrated analog resistor
Usefulness: Variable integrated analog resistor
Novelty: Variable integrated resistor has chalcogenide device that is programmable above ten resistance states
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