Negative amplifier circuit

Details Negative amplifier circuit Negative amplifier circuit

1998-03-02

2000-06-20

Shingleton, Michael B

Amplifiers

With semiconductor amplifying device

Including differential amplifier

330258, H23G 332, H03F 345

Patent

active

060782188

ABSTRACT:
An amplifier circuit in which a differential pair of transistors (1a), (1b) is provided. An impedance (2) of a value 2.Z.sub.e is connected in series between the emitters of the transistors (1a), (1b) and these emitters are grounded by way of current sources (3a), (3b) respectively. Input signal sources (4a), (4b) of voltage values.+-.V.sub.IN are connected to the bases of the transistors (1a), (1b) by way of the base-emitter paths of the transistors (5a), (5b) which form a buffer circuit (10). The emitters of the transistors (5a), (5b) are in turn grounded by way of current sources (6a), (6b) respectively. Further, the collectors of each of the transistors (1a), (1b) are connected to the base of the other transistors by way of the base-emitter paths of the transistors (5a), (5b) respectively.

REFERENCES:
patent: 5465072 (1995-11-01), Atarodi
patent: 5587689 (1996-12-01), Bowers

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