US3823332A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mos fet reference voltage supply
Assignee: RCA Corp
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Filing: 1970-01-30
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Granted: 1974-07-09
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Expires: 1990-01-30
Abstract
Abstract A means for obtaining regulated reference supply voltages substantially at one or more integral multiples of the threshold voltage (Vt) of field effect transistors fabricated completely with field-effect-transistors on a single monolithic integrated circuit chip.
Inventors
- 👤 R Feryszka
- 👤 J Preisig
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 04:05
CPC Classifications
H; H03; H03F; H03F3/00; H03F3/34; H03F3/343; H03F3/345; G; G05; G05F; G05F3/00; G05F3/02; G05F3/08; G05F3/10; G05F3/16; G05F3/20; G05F3/26; G05F3/262; H03F1/00; H03F1/30; H03F1/301
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
251 words
A regulated reference voltage supply circuit comprising: a pair of terminals adapted for connection across a direct voltage source; at least (n + 1) semiconductor devices connected in numerical order in a first series current path between said pair of terminals, each said device being a field effect transistor having at least source, drain and gate electrodes, the gate and drain electrodes of each said transistor being connected directly together, the joined gate and drain electrodes of the highest numbered one of said transistors being direct current coupled to a first one of said pair of terminals, the source of the first of said transistors being direct current coupled to a second one of said pair of terminals and the source of each additional one of said transistors being direct current coupled to the joined gate and drain of a succeeding one of said transistors, each said device being characterized by a relatively high impedance and a threshold conduction voltage; a second series current path between said pair of terminals including at least a further high impedance semiconductor device and an output semiconductor device, said output device having input, output and common electrodes; and means direct current coupling said input electrode of said output device to the junction between the nth and (nth + 1) of said semiconductor devices in said first current path for providing between said output and common electrodes a voltage substantially equal to the summation of threshold voltagE of n of said (n + 1) semiconductor devices.
Claim 2
Dependent Claim
251 words
A regulated reference voltage supply circuit comprising: a pair of terminals adapted for connection across a direct voltage source; at least (n + 1) semiconductor devices connected in numerical order in a first series current path between said pair of terminals, each said device being a field effect transistor having at least source, drain and gate electrodes, the gate and drain electrodes of each said transistor being connected directly together, the joined gate and drain electrodes of the highest numbered one of said transistors being direct current coupled to a first one of said pair of terminals, the source of the first of said transistors being direct current coupled to a second one of said pair of terminals and the source of each additional one of said transistors being direct current coupled to the joined gate and drain of a succeeding one of said transistors, each said device being characterized by a relatively high impedance and a threshold conduction voltage; a second series current path between said pair of terminals including at least a further high impedance semiconductor device and an output semiconductor device, said output device having input, output and common electrodes; and means direct current coupling said input electrode of said output device to the junction between the nth and (nth + 1) of said semiconductor devices in said first current path for providing between said output and common electrodes a voltage substantially equal to the summation of threshold voltagE of n of said (n + 1) semiconductor devices.
Claim 3
Dependent Claim
25 words
A regulated reference voltage supply circuit according to claim 1 wherein said further high impedance semiconductor device is directly connected to one of said terminals.
Claim 4
Dependent Claim
123 words
A regulated reference voltage supply according to claim 1 wherein each said semiconductor device in said second current path is a field-effect-transistor having at least a source electrode, a gate electrode, and a drain electrode, the gate and drain electrodes of said high impedance device being directly connected together to said first terminal, said source electrode of said high impedance device being coupled to the drain electrode of said output device, said source electrode of said output device being connected to said second terminal, and wherein said input electrode of said output device corresponds to said gate electrode, the output electrode of said output device corresponds to said drain electrode, and said common electrode of said output device corresponds to said source electrode.
Claim 5
Dependent Claim
18 words
A regulated reference voltage supply circuit according to claim 3 wherein each said transistor is a metal-oxide-semiconductor field-effect-transistor.
Claim 6
Dependent Claim
237 words
A regulated reference voltage supply circuit comprising: a pair of terminals adapted for connection across a direct voltage source; a first high impedance semiconductor device having at least a source electrode, a drain electrode, and a gate electrode; a second and a third output semiconductor device each having at least a source electrode, a drain electrode, and a gate electorde; means for connecting the drain and gate electrodes of said first high impedance device to the first terminal of said pair of terminals; means for connecting the source electrode of said first device to the drain electrode of said second device and to a first output terminal; means for connecting the gate electrode of said second device to the gate electrode of said first high impedance device, to the drain electrode of said first high impedance device, and to said first terminal; means for connecting the source electrode of said second device to the drain electrode of said third device and to a second output terminal; means for connecting the source electrode of said third device to the second terminal of said pair of terminals; and means connecting the gate electrode of said third device to said first output terminal for providing between said first output terminal and said second terminal and between said second output terminal and said second terminal voltages substantially equal to the summation of threshold voltages of corresponding numbers of said semiconductor devices.
Claim 7
Dependent Claim
237 words
A regulated reference voltage supply circuit comprising: a pair of terminals adapted for connection across a direct voltage source; a first high impedance semiconductor device having at least a source electrode, a drain electrode, and a gate electrode; a second and a third output semiconductor device each having at least a source electrode, a drain electrode, and a gate electorde; means for connecting the drain and gate electrodes of said first high impedance device to the first terminal of said pair of terminals; means for connecting the source electrode of said first device to the drain electrode of said second device and to a first output terminal; means for connecting the gate electrode of said second device to the gate electrode of said first high impedance device, to the drain electrode of said first high impedance device, and to said first terminal; means for connecting the source electrode of said second device to the drain electrode of said third device and to a second output terminal; means for connecting the source electrode of said third device to the second terminal of said pair of terminals; and means connecting the gate electrode of said third device to said first output terminal for providing between said first output terminal and said second terminal and between said second output terminal and said second terminal voltages substantially equal to the summation of threshold voltages of corresponding numbers of said semiconductor devices.
Claim 8
Dependent Claim
176 words
A regulated reference voltage supply circuit comprising: at least a first and a second relatively high impedance field effect transistor adapted for connection across a source of D.C. voltage, said source of voltage having a first terminal and a second terminal, each said transistor having direct connected gate and drain electrodes and a source electrode, the drain to source paths of said transistors being coupled in series relation; a third relatively high impedance field effect transistor having at least a drain, a gate connected to said drain and a source, said drain being connected to said first terminal; and amplifying means comprising a semiconductor amplifying device having an output electrode, a common electrode and an input electrode, said output electrode being coupled to said source of said third relatively high impedance transistor, said amplifying means further comprising means direct coupling said input electrode to the junction between said first and second high impedance transistors for providing between said output electrode and said second terminal a voltage substantially equal to the threshold voltage of said first transistor.
Claim 9
Dependent Claim
176 words
A regulated reference voltage supply circuit comprising: at least a first and a second relatively high impedance field effect transistor adapted for connection across a source of D.C. voltage, said source of voltage having a first terminal and a second terminal, each said transistor having direct connected gate and drain electrodes and a source electrode, the drain to source paths of said transistors being coupled in series relation; a third relatively high impedance field effect transistor having at least a drain, a gate connected to said drain and a source, said drain being connected to said first terminal; and amplifying means comprising a semiconductor amplifying device having an output electrode, a common electrode and an input electrode, said output electrode being coupled to said source of said third relatively high impedance transistor, said amplifying means further comprising means direct coupling said input electrode to the junction between said first and second high impedance transistors for providing between said output electrode and said second terminal a voltage substantially equal to the threshold voltage of said first transistor.
Claim 10
Dependent Claim
197 words
A regulated reference voltage supply circuit comprising: at least first and second relatively high impedancE semiconductor devices adapted for series connection across a source of D.C. voltage, said source of voltage having a first terminal and a second terminal; a third relatively high impedance semiconductor device having at least a first electrode and a second electrode, said first electrode being connected to said first terminal; at least one additional relatively high impedance semiconductor device coupled in series between said first and second semiconductor devices; and amplifying means comprising a semiconductor amplifying device and additional amplifying devices, each having output and common electrodes connected in series between said second electrode of said third relatively high impedance device and said second terminal, each said amplifying device further having an input electrode, said amplifying means further comprising means direct coupling each said input electrode of said amplifying devices to a corresponding one of the junctions between said series-coupled high impedance semiconductor devices for providing between each said output electrode and said second terminal a voltage equal substantially to the summation of threshold voltages of those of said high impedance devices coupled between the corresponding input electrode and said second terminal.
Claim 11
Dependent Claim
197 words
A regulated reference voltage supply circuit comprising: at least first and second relatively high impedancE semiconductor devices adapted for series connection across a source of D.C. voltage, said source of voltage having a first terminal and a second terminal; a third relatively high impedance semiconductor device having at least a first electrode and a second electrode, said first electrode being connected to said first terminal; at least one additional relatively high impedance semiconductor device coupled in series between said first and second semiconductor devices; and amplifying means comprising a semiconductor amplifying device and additional amplifying devices, each having output and common electrodes connected in series between said second electrode of said third relatively high impedance device and said second terminal, each said amplifying device further having an input electrode, said amplifying means further comprising means direct coupling each said input electrode of said amplifying devices to a corresponding one of the junctions between said series-coupled high impedance semiconductor devices for providing between each said output electrode and said second terminal a voltage equal substantially to the summation of threshold voltages of those of said high impedance devices coupled between the corresponding input electrode and said second terminal.
Claim 12
Dependent Claim
83 words
A regulated reference voltage supply circuit according to claim 7 wherein said first, second, third, and additional relatively high impedance semiconductor devices, said amplifying means, and additional amplifying devices are field-effect-transistors each having at least a gate electrode, a drain electrode and a source electrode, said gate and drain electrodes of said first, second, and third devices being connected in common and said input and output electrodes of said semiconductor amplifying device being the gate and drain electrodes respectively of said amplifying device.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-07-08 | 1978-01-07 | 1978-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-08 | 1982-01-07 | 1982-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-08 | 1986-01-07 | 1986-07-09 | $7700.00 | Window Closed / Lapsed |