Amplifier circuits

Amplifiers – With semiconductor amplifying device – Including current mirror amplifier

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323315, 330264, 330296, 330300, H03F 304

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active

RE0312630

ABSTRACT:
A composite transistor device is described which comprises a field effect transistor having its transconductance multiplied by the current gain of a current mirror amplifier. The transconductances of such devices can be matched with an accuracy approaching that with which simple field effect transistors can be matched. The higher transconductances of the composite devices make possible a variety of new circuits with distinct performance advantages.

REFERENCES:
patent: 3668541 (1972-06-01), Pease
patent: 3714600 (1973-01-01), Kuijk et al.
patent: 3717821 (1973-02-01), Amemiya et al.
patent: 3903479 (1975-09-01), Limberg
patent: 3909628 (1975-09-01), Muto
patent: 3925718 (1975-12-01), Wittlinger
Linear Integrated Circuits Handbook, (File 625), pp. 511-516, RCA, 1975.
Burger et al., Fundamentals of Silicon Integrated Device Technology, vol. II, 1968, pp. 440-441.
Hart "Current Generators Using Unipolar-Bipolar Transistor Hybride", Electronic Applications, vol. 27, No. 1, 1966-1967, pp. 30-34.
H. C. Lin et al., "A Low Noise Integrated Unibi Amplifier With Novel Biasing Scheme and Structure", 1965 International Solid-State Circuits Conference, pp. 114 & 115.
Radio und Fernsehen 16, (1967), No. 2, pp. 39-41.
Radio Fernsehen Elektronik, (1969), pp. 69-73.

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