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US5497348A
Expired / Lapsed
US
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Burn-in detection circuit
Assignee: Texas Instruments Inc
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Filing: 1994-05-31
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Granted: 1996-03-05
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Expires: 2014-05-31
Abstract
Abstract A burn-in detection circuit include a first divider circuit to divide a first reference to form a divider voltage. A comparator compares the divider voltage with a second reference voltage to reduce the divider voltage based on the comparator. The comparator include a second divider circuit to be switched in parallel with a portion of said first divider circuit.
Inventors
- 👤 Ching-Yuh Tsay
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 16:59
CPC Classifications
G; G11; G11C; G11C5/00; G11C5/14; G11C5/143; G11C29/00; G11C29/04; G11C29/50; G11C11/00; G11C11/21; G11C11/34; G11C11/40; G11C11/401
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
131 words
A memory device to provide a burn-in detection signal, comprising: a first reference generator circuit for producing a first reference voltage; a first voltage divider circuit coupled to said first reference generator circuit to divide said first reference voltage to form a first divided reference voltage; a second reference generator circuit for producing a second reference voltage; a comparator coupled to said first voltage divider circuit and said second reference generator circuit for comparing said first divided reference voltage and said second reference voltage and for responding to said comparison of said first divider reference voltage and said second reference voltage to reduce said divided reference voltage, wherein said comparator includes a transistor to switch a second voltage divider circuit in parallel to a portion of said first voltage divider circuit.
Claim 2
Dependent Claim
131 words
A memory device to provide a burn-in detection signal, comprising: a first reference generator circuit for producing a first reference voltage; a first voltage divider circuit coupled to said first reference generator circuit to divide said first reference voltage to form a first divided reference voltage; a second reference generator circuit for producing a second reference voltage; a comparator coupled to said first voltage divider circuit and said second reference generator circuit for comparing said first divided reference voltage and said second reference voltage and for responding to said comparison of said first divider reference voltage and said second reference voltage to reduce said divided reference voltage, wherein said comparator includes a transistor to switch a second voltage divider circuit in parallel to a portion of said first voltage divider circuit.
Claim 3
Dependent Claim
24 words
A memory device to provide a burn-in detection signal as in claim 1, wherein said second voltage divider circuit includes a plurality of transistors.
Claim 4
Dependent Claim
119 words
A burn-in detection circuit to provide a burn-in detection signal, comprising; an input circuit to receive a first reference voltage and a second reference voltage; a first voltage divider circuit coupled to said input circuit to divide said first reference voltage to form a first divided reference voltage; a comparator coupled to said circuit and said first voltage divider circuit to compare said second referenced voltage and said first divided reference voltage and for responding to said comparator of said first divided reference voltage and said second reference voltage to reduce said divided reference voltage, wherein said comparator includes a transistor to switch a second voltage divider circuit in parallel to a portion of said first voltage divider circuit.
Claim 5
Dependent Claim
119 words
A burn-in detection circuit to provide a burn-in detection signal, comprising; an input circuit to receive a first reference voltage and a second reference voltage; a first voltage divider circuit coupled to said input circuit to divide said first reference voltage to form a first divided reference voltage; a comparator coupled to said circuit and said first voltage divider circuit to compare said second referenced voltage and said first divided reference voltage and for responding to said comparator of said first divided reference voltage and said second reference voltage to reduce said divided reference voltage, wherein said comparator includes a transistor to switch a second voltage divider circuit in parallel to a portion of said first voltage divider circuit.
Claim 6
Dependent Claim
25 words
A burn-in detection circuit to provide a burn-in detection signal as in claim 3, wherein said second voltage divider circuit includes a plurality of transistors.
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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) | 1999-03-05 | 1999-09-04 | 2000-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2003-03-05 | 2003-09-04 | 2004-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2007-03-05 | 2007-09-04 | 2008-03-05 | $7700.00 | Window Closed / Lapsed |