Output driver impedance controller
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Feb 14, 2006
Grant Date -
Jun 17, 2004
app pub date -
Dec 5, 2003
filing date -
Dec 10, 2002
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An output driver impedance controller for controlling pull-down impedance of at least one output based on a reference value including a programmable reference impedance generator, at least one output driver coupled to a corresponding output, and an impedance matching controller. The programmable reference impedance generator develops a reference impedance controlled by a reference impedance control input. Each output driver includes a programmable output impedance generator coupled to an output and controlled by an output impedance control input. The impedance matching controller continually adjusts the reference impedance control input to match the reference impedance with the reference value within a predetermined tolerance and generates the output impedance control input based on the reference impedance control input. Each of the programmable generators may be implemented with a binary array of matched impedance devices. The reference value may be an externally coupled resistor and/or an internal reference resistor.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully