US3721893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Stable current reference circuit with beta compensation
Assignee: Motorola Solutions Inc
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Filing: 1972-05-30
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Granted: 1973-03-20
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Expires: 1992-05-30
Abstract
Abstract A MONOLITHIC INTEGRATED CURRENT REFERENCE SYSTEM UTILIZES A SINGLE STABLE REFERENCE CURRENT SOURCE FOR CONTROLLING THE OPERATION CURRENTS OF CIRCUITS FORMED AS PART OF THE INTEGRATED CIRCUIT. VARIATIONS OF SUCH OPERATING CURRENTS WITH TEMPERATURE DUE TO VARIATIONS IN THE BETA OF THE TRANSISTORS USED IN THE SYSTEM ARE COMPENSATED FOR BY PROVIDING ADDITIONAL BETA DEPENDENT CURRENT COMPONENTS TO THE SYSTEM.
Inventors
- 👤 W Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 10:59
CPC Classifications
G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/26; G05F3/265
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-03-19 | 1976-09-18 | 1977-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-19 | 1980-09-18 | 1981-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-19 | 1984-09-18 | 1985-03-20 | $7700.00 | Window Closed / Lapsed |