US3883825A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Integrated circuit relaxation oscillator having minimal external pads
Assignee: Arris Technology Inc
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Filing: 1974-02-19
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Granted: 1975-05-13
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Expires: 1994-02-19
Abstract
Abstract A LSI oscillator circuit includes a load device and a drive device, the output circuits of which are connected in series between a voltage source and a reference potential. The circuit output node is connected between the output circuits of the load and driver devices. A control node is connected to the control terminal of the driver device. When the voltage at the control node is less than the threshold voltage of the driver device, the driver device is nonconductive and the output node is charged to a given voltage. When the voltage at the control node is above the threshold voltage of the driver device, the driver device is rendered conductive thereby causing the output node to discharge to the reference potential. The control node is connected to a voltage source through a resistor and connected to the reference potential through a capacitor. This arrangement permits the charging of the control node over a period of time from the reference potential through the threshold voltage of the driver device. The control node is discharged by means of a transistor, the output circuit of which is connected between the control node and the reference potential. The control terminal of the discharging transistor is connected to the control node through a plurality of series connected transistors such that the discharging transistor is rendered conductive to discharge the control node when the control node reaches a potential sufficient to render the series connector transistors and discharging transistor conductive. Thereafter, the discharging transistor is rendered nonconductive and the control node permitted to recharge.
Inventors
- 👤 Burton E Cohen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 01:38
CPC Classifications
H; H03; H03K; H03K4/00; H03K4/06; H03K4/08; H03K4/48; H03K4/50; H03K4/501; H03K3/00; H03K3/02; H03K3/353; H03K3/354
Claims Analysis
Total Claims: 26
Claim 1
Independent Claim
144 words
An oscillator circuit comprising an output node, a control node, first means operatively connected to said output node and said control node and responsive to the voltage at said control node such that when the voltage at said control node is at a first value to charge said output node to a given voltage and when the voltage at said control node is at a second value to charge said output node to a different voltage, charging means operatively connected to said control node and effective to charge said control node from said first value through said second value to a third value over a period of time, and second means operatively connected to said control node and effective to return said control node to said first value when it reaches said third value and then permit it to recharge to said third value.
Claim 2
Dependent Claim
144 words
An oscillator circuit comprising an output node, a control node, first means operatively connected to said output node and said control node and responsive to the voltage at said control node such that when the voltage at said control node is at a first value to charge said output node to a given voltage and when the voltage at said control node is at a second value to charge said output node to a different voltage, charging means operatively connected to said control node and effective to charge said control node from said first value through said second value to a third value over a period of time, and second means operatively connected to said control node and effective to return said control node to said first value when it reaches said third value and then permit it to recharge to said third value.
Claim 3
Dependent Claim
29 words
The oscillator circuit of claim 1, in which said first means comprises an inverter circuit comprising a transistor, the control electrode of which is connected to said control node.
Claim 4
Dependent Claim
40 words
The oscillator circuit of claim 1, in which said first means comprises, connected in series, s resistive means, said output node, and the output circuit of a transistor, the control electrode of said transistor being connected to said control node.
Claim 5
Dependent Claim
48 words
The oscillator circuit of claim 1, in which said second means comprises a transistor, the output circuit of which is connected between said control node and a voltage source of said first value and means for operatively connecting the control electrode of said transistor to said control node.
Claim 6
Dependent Claim
51 words
In the oscillator circuit of claim 4, additional transistor means the output circuit of which is connected between a voltage source of said first value and the control electrode of said transistor of said second means, the control electrode of said additional transistor means being operatively connected to said output node.
Claim 7
Dependent Claim
69 words
The oscillator circuit of claim 1, in which said second means comprises a transistor the output circuit of which is connected between said control node and a voltage source of said first value and a control electrode of which is connected to said control node via a plurality of transistors whose output circuits are in series and whose control electrodes are connected to one of their output electrodes Respectively.
Claim 8
Dependent Claim
45 words
In the oscillator circuit of claim 6, additional transistors the output circuits of which are connected between a voltage source of said first value and the output circuits of said series-connected transistors respectively and the control electrodes of which are connected to said output node.
Claim 9
Dependent Claim
52 words
The oscillator circuit of claim 3, in which said second means comprises a transistor, the output circuit of which is connected between said control node and a voltage source of said first value and means for operatively connecting the control electrode of, said transistor of said second means to said control node.
Claim 10
Dependent Claim
51 words
In the oscillator circuit of claim 8, additional transistor means the output circuit of which is connected between a voltage source of said first value and the control electrode of said transistor of said second means, the control electrode of said additional transistor means being operatively connected to said output node.
Claim 11
Dependent Claim
69 words
The oscillator circuit of claim 3, in which said second means comprises a transistor the output circuit of which is connected between said control node and a voltage source of said first value and a control electrode of which is connected to said control node via a plurality of transistors whose output circuits are in series and whose control electrodes are connected to one of their output electrodes respectively.
Claim 12
Dependent Claim
45 words
In the oscillator circuit of claim 10, additional transistors the output circuits of which are connected between a voltage source of said first value and the output circuits of said series-connected transistors respectively and the control electrodes of which are connected to said output node.
Claim 13
Dependent Claim
31 words
The oscillator circuit of claim 1, in which said output node, said control node, said first means and said second means are fabricated as an integrated circuit on a single substrate.
Claim 14
Dependent Claim
40 words
The oscillator circuit of claim 12, in which said first means comprises, connected in series, a resistive means, said output node, and the output circuit of a transistor, the control electrode of said transistor being connected to said control node.
Claim 15
Dependent Claim
48 words
The oscillator circuit of claim 12, in which said second means comprises a transistor, the output circuit of which is connected between said control node and a voltage source of said first value and means for operatively connecting the control electrode of said transistor to said control node.
Claim 16
Dependent Claim
51 words
In the oscillator circuit of claim 14, additional transistor means the output circuit of which is connected between a voltage source of said first value and the control electrode of said transistor of said second means, the control electrode of said additional transistor means being operatively connected to said output node.
Claim 17
Dependent Claim
69 words
The oscillator circuit of claim 12, in which said second means comprises a transistor the output circuit of which is connected between said control node and a voltage source of said first value and a control electrode of which is connected to said control node via a plurality of transistors whose output circuits are in series and whose control electrodes are connected to one of their output electrodes respectively.
Claim 18
Dependent Claim
45 words
In the oscillator circuit of claim 16, additional transistors the output circuits of which are connected between a voltage source of said first value and the output circuits of said series-connected transistors respectively and the control electrodes of which are connected to said output node.
Claim 19
Dependent Claim
48 words
The oscillator circuit of claim 1, in which said charging means comprises a resistor and a capacitor, and in which said output node, said control node, said first means, said second means, said resistor and said capacitor are all fabricated as an integrated circuit on a single substrate.
Claim 20
Dependent Claim
52 words
The oscillator circuit of claim 2, in which said second means comprises a transistor, the output circuit of which is connected between said control node and a voltage source of said first value and means for operatively connecting the control elecTrode of said transistor of said second means to said control node.
Claim 21
Dependent Claim
48 words
The oscillator circuit of claim 18, in which said second means comprises a transistor, the output circuit of which is connected between said control node and a voltage source of said first value and means for operatively connecting the control electrode of said transistor to said control node.
Claim 22
Dependent Claim
51 words
In the oscillator circuit of claim 20, additional transistor means the output circuit of which is connected between a voltage source of said first value and the control electrode of said transistor of said second means, the control electrode of said additional transistor means being operatively connected to said output node.
Claim 23
Dependent Claim
69 words
The oscillator circuit of claim 18, in which said second means comprises a transistor the output circuit of which is connected between said control node and a voltage source of said first value and a control electrode of which is connected to said control node via a plurality of transistors whose output circuits are in series and whose control electrodes are connected to one of their output electrodes respectively.
Claim 24
Dependent Claim
45 words
In the oscillator circuit of claim 22, additional transistors the output circuits of which are connected between a voltage source of said first value and the output circuits of said series-connected transistors respectively and the control electrodes of which are connected to said output node.
Claim 25
Dependent Claim
165 words
An oscillator circuit comprising an output node, a control node, first means operatively connected to said output node and said control node and responsive to the voltage at said control node such that when the voltage at said control node is at a first value to charge said output node to a given voltage and when the voltage at said control node is at a second value to charge said output node to a different voltage, charging means operatively connected to said control node and effective to charge said control node from said first value through said second value to a third value over a period of time, and second means operatively connected to said control node and effective, when said control node reaches said third value, to return said control node to said first value during a time interval substantially shorter than the time required to charge said control node to said third value and then permit it to recharge to said third value.
Claim 26
Dependent Claim
165 words
An oscillator circuit comprising an output node, a control node, first means operatively connected to said output node and said control node and responsive to the voltage at said control node such that when the voltage at said control node is at a first value to charge said output node to a given voltage and when the voltage at said control node is at a second value to charge said output node to a different voltage, charging means operatively connected to said control node and effective to charge said control node from said first value through said second value to a third value over a period of time, and second means operatively connected to said control node and effective, when said control node reaches said third value, to return said control node to said first value during a time interval substantially shorter than the time required to charge said control node to said third value and then permit it to recharge to said third value.
References Cited (Backward Citations)
US2979626A
Cited
US3659224A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-12 | 1978-11-11 | 1979-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-12 | 1982-11-11 | 1983-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-12 | 1986-11-11 | 1987-05-13 | $7700.00 | Window Closed / Lapsed |