Integrable transistor oscillator requiring only one pin to quart

Details Integrable transistor oscillator requiring only one pin to quart Integrable transistor oscillator requiring only one pin to quart

1982-02-05

1985-05-21

Laroche, Eugene R.

Oscillators

Solid state active element oscillator

Transistors

331113R, 331116R, 331117FE, H03B 530, H03K 3281

Patent

active

045189331

ABSTRACT:
The invention relates to a quartz oscillator comprising two transistors to whose base terminals the collector voltage of each one of the other transistors is applied, a two-terminal network incorporating a quartz resonator being connected to the emitter of one of the transistors. The collector voltage is applied to the corresponding base via a semiconductor junction. The oscillator further includes respective emitter and collector impedances for the transistors in which the product of the emitter impedances is greater than the product of the collector impedances. When the supply voltage is sufficiently low so that the collector-base diodes of the transistors are always in the non-conducting state, the oscillator frequency is independent, to a very large degree, of saturation phenomena of the two transistors. When manufactured in integrated circuit form, only one additional exterior terminal is required for the connection of a quartz resonator.

REFERENCES:
patent: 3730989 (1973-05-01), Rhee
patent: 3824491 (1974-07-01), Treadway
patent: 3911373 (1975-07-01), Ohtake et al.
Sinclair, I. R. "Square Wave Generator", Radio and Electronics Constructor, vol. 30 #12, Jul. 1977, pp. 736-738.
Luckav, H. et al. "Integrated Quartz Oscillator QO52", Components Report, vol. #5, Nov. 1976, pp. 162-166.
Tesic, S. et al., "A Quartz Multivibrator Using Two Regenerative Switches", Proceedings of the IEEE, Jan. 1977, pp. 166-167.

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