Voltage source circuit with selectable temperature independent and temperature dependent voltage outputs
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Sep 26, 2006
Grant Date -
Aug 4, 2005
app pub date -
Jan 27, 2005
filing date -
Jan 30, 2004
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A voltage source includes first and second pn junctions which conduct the outputs of respective current sources to establish respective base-emitter voltages V.sub.be1 and V.sub.be2 at respective nodes; V.sub.be1 and V.sub.be2 can each be generated with a current I or a current N*I. An amplifier A1 has its non-inverting input connected to the second node and its inverting input connected to the first node through an input capacitor; a feedback capacitor is connected between the inverting input and a third node. Switches are connected between A1's inverting input and A1's output, between the third node and A1's output, and between the third node and a circuit common point. A control circuit operates the switches and current sources during first and second operating phases to selectively produce a temperature independent output voltage or a temperature dependent output voltage.
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