Single end input high frequency amplifier

Details Single end input high frequency amplifier Single end input high frequency amplifier

1996-04-16

1997-12-02

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including differential amplifier

360 67, 330301, H03F 345, G11B 502

Patent

active

056940831

ABSTRACT:
A single end input type high frequency amplifier of the present invention decreases noise superposed on a power supply of a pre-amplifier in a read amplifier which amplifies a signal from MR head. The single end input type high frequency amplifier includes a transistor connected to an input side terminal of a differential input amplifier. A single end type resistor is connected to the transistor and a loop amplifier is connected to the single end type resistor to feedback a difference voltage between a reference side terminal and an input side terminal of the differential input amplifier.

REFERENCES:
patent: 5444579 (1995-08-01), Klein et al.
patent: 5548453 (1996-08-01), Sasaki et al.
K.B. Klaassen et al., "Read/Write Amplifier Design Considerations for MR Heads"; IEEE Transactions on Magnetics, vol. 31, No. 2, Mar. 1995.

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