Low phase noise high frequency integrated oscillator with minimu

Details Low phase noise high frequency integrated oscillator with minimu Low phase noise high frequency integrated oscillator with minimu

1994-09-20

1995-08-22

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

331117R, 331177V, 331115, H03B 512, H03B 536

Patent

active

054444225

ABSTRACT:
A low phase noise, high frequency low voltage integrated circuit oscillator has a minimum number of live pins. It includes a three transistor current mirror defining a voltage node and a current node with an emitter follower transistor coupled between the voltage node and the current node. An output is taken from the emitter follower transistor and a tuned circuit is coupled to the voltage node. A pair of power supply pins are provided for power application to the integrated circuit and one live pin is coupled to the voltage node. A tuning circuit for affecting capacitance changes for varying the frequency of the oscillator is connectable to the voltage node. In some versions of the oscillator that use a separate crystal, additional pins are needed.

REFERENCES:
patent: 4518930 (1985-05-01), Rozema et l.
patent: 4745375 (1988-05-01), Suzuki
patent: 5341112 (1994-08-01), Haman

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