Low noise amplifier circuit for magnetoresistive sensors for fas

Details Low noise amplifier circuit for magnetoresistive sensors for fas Low noise amplifier circuit for magnetoresistive sensors for fas

1992-09-17

1994-06-21

Hajec, Donald

Dynamic magnetic information storage or retrieval

General recording or reproducing

Specifics of the amplifier

360113, G11B 502, G11B 533, G11B 5127

Patent

active

053232780

ABSTRACT:
A data storage system comprises magnetoresistive (MR) sensing elements for sensing data from a recording medium that is referenced to ground, and an amplifier circuit including a biasing stage, an amplifying stage, and a matching stage, each referenced to a common supply voltage source and to ground. The biasing stage includes a reference current source for selectively biasing each MR element with a constant current and, in so doing, developing a single-ended voltage signal having a first dc component. The amplifying stage converts the single-ended voltage signal into an amplified single-ended output voltage signal having a second dc component but in which the first dc component is eliminated. The matching stage creates a bias and imposes said bias on the amplifying stage for converting the single-ended output voltage signal to a differential output voltage signal in which the second dc component is eliminated.

REFERENCES:
patent: 4390911 (1983-06-01), Klaassen
patent: 4420776 (1983-11-01), Jove et al.
patent: 4706138 (1987-11-01), Jove et al.
patent: 4712144 (1987-12-01), Klaassen
patent: 4786993 (1988-11-01), Jove et al.
patent: 4879610 (1989-11-01), Jove et al.
patent: 5032935 (1991-07-01), Jove et al.
patent: 5103353 (1992-04-01), Jove et al.
patent: 5130866 (1992-07-01), Klaassen et al.
patent: 5168395 (1992-12-01), Klaassen et al.
patent: 5204789 (1993-04-01), Jove et al.

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