Output driver impedance calibration circuit
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 21, 2003
Grant Date -
Jan 9, 2003
app pub date -
Jul 3, 2001
filing date -
Jul 3, 2001
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An output driver impedance calibration circuit which is used to make I/O (input/output) off chip driver characteristics, for a plurality of output driver circuits, alike on the same chip. The output impedance of an input/output driver circuit is calibrated by providing an external target impedance reference (it could be a multiple of the actual target output impedance), multiple devices in the output stage of the I/O driver circuit, a circuit to determine the value of the actual output impedance as compared with its target output impedance and a determination of when to stop the calibration process.
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