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US 5,396,195 AGranted
Low-power-dissipation CMOS oscillator circuits
AssigneeAT&T Corp.
InventorThaddeus J. Gabara
Life of this patent
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Abstract
Low-power-dissipation CMOS oscillator circuits include inductors and capacitors forming tank circuitry. Cross-connected MOS devices provide positive feedback to replenish losses in the tank circuitry and thereby sustain oscillations. Each such oscillator circuit simultaneously generates complementary output sine-wave signals.
Claims13
An oscillator circuit comprising
- first and second MOS devices of one conductivity type, each of said devices including source, drain and gate electrodes,
- means directly connecting the drain electrode of said first device to the gate electrode of said second device and directly connecting the drain electrode of said second device to the gate electrode of said first device,
- and tank circuitry comprising at least one inductor and capacitors connected to said source and drain electrodes.
An oscillator circuit comprising
- first and second MOS devices of one conductivity type, each of said devices including source, drain and gate electrodes,
- means directly connecting the drain electrode of said first device to the gate electrode of said second device and directly connecting the drain electrode of said second device to the gate electrode of said first device,
- a reactive element connected between the drain electrodes of said first and second devices,
- and means including additional reactive elements for connecting the source and drain electrodes of said first and second devices to associated power sources.
1 more element
Dependencies are inferred from the claim text.