IT1236927B - Stadio di preamplificazione a basso rumore, in particolare per testine magnetiche. - Google Patents

Stadio di preamplificazione a basso rumore, in particolare per testine magnetiche.

Info

Publication number
IT1236927B
IT1236927B IT02281989A IT2281989A IT1236927B IT 1236927 B IT1236927 B IT 1236927B IT 02281989 A IT02281989 A IT 02281989A IT 2281989 A IT2281989 A IT 2281989A IT 1236927 B IT1236927 B IT 1236927B
Authority
IT
Italy
Prior art keywords
low noise
magnetic heads
preamplification stage
noise preamplification
stage
Prior art date
Application number
IT02281989A
Other languages
English (en)
Other versions
IT8922819A0 (it
IT8922819A1 (it
Inventor
Bruno Murari
Domenico Rossi
Pierantonio Savino
Original Assignee
St Microelectronics Srl
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by St Microelectronics Srl filed Critical St Microelectronics Srl
Priority to IT02281989A priority Critical patent/IT1236927B/it
Publication of IT8922819A0 publication Critical patent/IT8922819A0/it
Priority to DE69032087T priority patent/DE69032087T2/de
Priority to EP90124121A priority patent/EP0433896B1/en
Priority to US07/628,023 priority patent/US5150073A/en
Priority to JP40507490A priority patent/JP3176639B2/ja
Publication of IT8922819A1 publication Critical patent/IT8922819A1/it
Application granted granted Critical
Publication of IT1236927B publication Critical patent/IT1236927B/it

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B5/00—Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
    • G11B5/02—Recording, reproducing, or erasing methods; Read, write or erase circuits therefor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/34—DC amplifiers in which all stages are DC-coupled
    • H03F3/343—DC amplifiers in which all stages are DC-coupled with semiconductor devices only
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/45—Differential amplifiers
    • H03F3/45071—Differential amplifiers with semiconductor devices only
    • H03F3/45479—Differential amplifiers with semiconductor devices only characterised by the way of common mode signal rejection

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)
  • Magnetic Heads (AREA)
IT02281989A 1989-12-22 1989-12-22 Stadio di preamplificazione a basso rumore, in particolare per testine magnetiche. IT1236927B (it)

Priority Applications (5)

Application Number Priority Date Filing Date Title
IT02281989A IT1236927B (it) 1989-12-22 1989-12-22 Stadio di preamplificazione a basso rumore, in particolare per testine magnetiche.
DE69032087T DE69032087T2 (de) 1989-12-22 1990-12-13 Rauscharme Vorverstärkerstufe, insbesondere für Magnetköpfe
EP90124121A EP0433896B1 (en) 1989-12-22 1990-12-13 Low-noise preamplifier stage, in particular for magnetic heads
US07/628,023 US5150073A (en) 1989-12-22 1990-12-17 Low-noise preamplifier stage, in particular for magnetic heads
JP40507490A JP3176639B2 (ja) 1989-12-22 1990-12-21 磁気ヘッド用の低雑音前置増幅器段

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT02281989A IT1236927B (it) 1989-12-22 1989-12-22 Stadio di preamplificazione a basso rumore, in particolare per testine magnetiche.

Publications (3)

Publication Number Publication Date
IT8922819A0 IT8922819A0 (it) 1989-12-22
IT8922819A1 IT8922819A1 (it) 1991-06-22
IT1236927B true IT1236927B (it) 1993-04-26

Family

ID=11200808

Family Applications (1)

Application Number Title Priority Date Filing Date
IT02281989A IT1236927B (it) 1989-12-22 1989-12-22 Stadio di preamplificazione a basso rumore, in particolare per testine magnetiche.

Country Status (5)

Country Link
US (1) US5150073A (it)
EP (1) EP0433896B1 (it)
JP (1) JP3176639B2 (it)
DE (1) DE69032087T2 (it)
IT (1) IT1236927B (it)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5367412A (en) * 1992-09-10 1994-11-22 Rohm Co., Ltd. Recording/reproducing circuit and recording/reproducing apparatus having the same circuit
BE1005586A0 (nl) * 1993-05-10 1993-11-09 Philips Electronics Nv Optekeninrichting voorzien van een temperatuurafhankelijke schrijfstroomregeling.
GB9319106D0 (en) * 1993-09-15 1993-11-03 Plessey Semiconductors Ltd Preamplifier circuit arrangements
US6031807A (en) * 1997-05-07 2000-02-29 Stmicroelectronics, Inc. Programming the inductance of read/write heads
US7068106B2 (en) * 2004-06-02 2006-06-27 Elantec Semiconductor, Inc. Bias current cancellation for differential amplifiers

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1816034B2 (de) * 1968-12-20 1975-07-03 Philips Patentverwaltung Gmbh, 2000 Hamburg Regelbare Verstärkerstufe
US3668430A (en) * 1971-07-12 1972-06-06 Signetics Corp High speed logic circuit with low effective miller capacitance
JPS5631210A (en) * 1979-08-24 1981-03-30 Toshiba Corp Amplifier
JPS5781711A (en) * 1980-11-10 1982-05-21 Rohm Co Ltd Amplifier
JPS57169909A (en) * 1981-04-13 1982-10-19 Sony Corp Head amplifying circuit
JPS5836004A (ja) * 1981-08-28 1983-03-02 Hitachi Ltd 増幅回路
JPS58103212A (ja) * 1981-12-15 1983-06-20 Toshiba Corp 端子入力型差動増幅器
JPS59126308A (ja) * 1982-12-28 1984-07-20 Fujitsu Ltd 差動増幅回路
US4468628A (en) * 1983-01-17 1984-08-28 Tektronix, Inc. Differential amplifier with high common-mode rejection
US4754169A (en) * 1987-04-24 1988-06-28 American Telephone And Telegraph Company, At&T Bell Laboratories Differential circuit with controllable offset

Also Published As

Publication number Publication date
IT8922819A0 (it) 1989-12-22
EP0433896A2 (en) 1991-06-26
US5150073A (en) 1992-09-22
EP0433896B1 (en) 1998-03-04
IT8922819A1 (it) 1991-06-22
EP0433896A3 (en) 1991-08-21
JPH07176004A (ja) 1995-07-14
JP3176639B2 (ja) 2001-06-18
DE69032087D1 (de) 1998-04-09
DE69032087T2 (de) 1998-10-08

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Legal Events

Date Code Title Description
0001 Granted
TA Fee payment date (situation as of event date), data collected since 19931001

Effective date: 19961227