Signal processing circuit

Details Signal processing circuit Signal processing circuit

1984-10-24

1985-12-10

LaRoche, Eugene

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330252, 330288, H03F 345

Patent

active

045582874

ABSTRACT:
A signal processing circuit includes a differential amplifying circuit for respectively generating first and second output signals from first and second output terminals, first and second input terminals of this circuit being respectively coupled to a signal input terminal and a constant voltage terminal, first and second transistors coupled between a power source terminal and the signal input and output terminals, third and fourth transistors coupled between the signal input and output terminals and a ground terminal, a fifth transistor which together with the first transistor constitutes a first current mirror circuit and allows the current corresponding to the second output signal to flow through the first transistor and also allows the current corresponding to the second output signal to flow through the second or fourth transistor, and a second current mirror circuit for leading the currents corresponding to the first output signal to the third transistor and to the fourth or second transistor.

REFERENCES:
patent: 4516081 (1985-05-01), Katakura
Japanese Patent Disclosure (Kokai) No. 58-168322.

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