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US 4,066,982 AGranted
Oscillator circuit comprising integrated MIS field-effect transistors
AssigneeITT Industries, Inc.
InventorKlaus D. Strohl
Life of this patent
Estimating the term…
Abstract
The temperature dependence of the oscillator frequency of an integrated RC oscillator comprising an RS flip-flop with two load MISFETs, is compensated by means of an additional MISFET, the drain of which is connected to the gate electrodes of said load MISFETs and the gate electrode of said additional MISFET is connected to the supply voltage.
Claims2
An oscillator circuit including temperature compensating means and means for coupling said oscillator circuit to an external power source having an internal resistance, comprising:
- an RS flip-flop having first and second inputs;
- first and second capacitors for coupling said first and second inputs respectively to ground;
- first and second inverters, each containing a load transistor, said first and second inputs each controlled by one of said load transistors;
- and
- a first transistor for providing temperature compensation of the oscillator frequency, said first transistor having a source electrode coupled to ground, a gate electrode coupled to a first source of supply voltage and a drain electrode coupled to the gate electrodes of said load transistors and to said external power source, said first transistor having a drain-source resistance in the order of the internal resistance of said external power source.
2 more elements
Dependencies are inferred from the claim text.