Amplitude stabilized oscillator amplifier

Details Amplitude stabilized oscillator amplifier Amplitude stabilized oscillator amplifier

1989-09-15

1991-02-26

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330277, 331114, H03F 326, H03F 316

Patent

active

049964992

ABSTRACT:
An inverting amplifier useful in an oscillator circuit includes complementary serially connected first and second metal-oxide-semiconductor field effort transistor (MOSFETS) and first and second resistors, two capacitors, a first feedback circuit having two MOSFETS in series with a third resistor and a second feedback circuit having two MOSFETS and a fourth resistor in series. Each feedback circuit provides a feed back path from the drain of one of the output transistors to the gate thereof. The resistors are polysilicon type resistors and have a negative thermal coefficient. The amplifier has a very stable output signal amplitude which is essentially independent of integrated circuit manufacturing processing variations and operating temperature variations within useful ranges.

REFERENCES:
patent: 4243946 (1981-01-01), Wang
IBM Tech. Disc. Bull., vol. 32, No. 2, pp. 84-85, Jul. 1989.

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