DE69317084D1 - Verstärker für einen magnetoresistiven Sensor - Google Patents

Verstärker für einen magnetoresistiven Sensor

Info

Publication number
DE69317084D1
DE69317084D1 DE69317084T DE69317084T DE69317084D1 DE 69317084 D1 DE69317084 D1 DE 69317084D1 DE 69317084 T DE69317084 T DE 69317084T DE 69317084 T DE69317084 T DE 69317084T DE 69317084 D1 DE69317084 D1 DE 69317084D1
Authority
DE
Germany
Prior art keywords
amplifier
magnetoresistive sensor
magnetoresistive
sensor
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
DE69317084T
Other languages
English (en)
Other versions
DE69317084T2 (de
Inventor
Stephen Alan Jove
Klaas Berend Klaassen
Peppen Jacobus Cornelis Le Van
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of DE69317084D1 publication Critical patent/DE69317084D1/de
Publication of DE69317084T2 publication Critical patent/DE69317084T2/de
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers
    • H03F3/19—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only
    • H03F3/195—High-frequency amplifiers, e.g. radio frequency amplifiers with semiconductor devices only in integrated circuits
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • G11B19/04—Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B23/00—Record carriers not specific to the method of recording or reproducing; Accessories, e.g. containers, specially adapted for co-operation with the recording or reproducing apparatus ; Intermediate mediums; Apparatus or processes specially adapted for their manufacture
    • G11B23/50—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges
    • G11B23/505—Reconditioning of record carriers; Cleaning of record carriers ; Carrying-off electrostatic charges of disk carriers
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B33/00—Constructional parts, details or accessories not provided for in the other groups of this subclass
    • G11B33/14—Reducing influence of physical parameters, e.g. temperature change, moisture, dust
    • G11B33/1493—Electro-Magnetic Interference [EMI] or Radio Frequency Interference [RFI] shielding; grounding of static charges
    • 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
    • G11B5/012—Recording on, or reproducing or erasing from, magnetic disks
    • 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
    • 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
    • G11B5/10—Structure or manufacture of housings or shields for heads
    • G11B5/11—Shielding of head against electric or magnetic fields
    • 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
    • G11B5/40—Protective measures on heads, e.g. against excessive temperature 
    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
    • G11B19/00—Driving, starting, stopping record carriers not specifically of filamentary or web form, or of supports therefor; Control thereof; Control of operating function ; Driving both disc and head
    • G11B19/02—Control of operating function, e.g. switching from recording to reproducing
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • 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
    • G11B2005/0002—Special dispositions or recording techniques
    • G11B2005/0005—Arrangements, methods or circuits
    • G11B2005/001—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure
    • G11B2005/0013—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation
    • G11B2005/0016—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers
    • G11B2005/0018—Controlling recording characteristics of record carriers or transducing characteristics of transducers by means not being part of their structure of transducers, e.g. linearisation, equalisation of magnetoresistive transducers by current biasing control or regulation
    • 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
    • G11B5/48—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed
    • G11B5/54—Disposition or mounting of heads or head supports relative to record carriers ; arrangements of heads, e.g. for scanning the record carrier to increase the relative speed with provision for moving the head into or out of its operative position or across tracks
    • G11B5/55—Track change, selection or acquisition by displacement of the head
    • G11B5/5521—Track change, selection or acquisition by displacement of the head across disk tracks
    • G11B5/5526—Control therefor; circuits, track configurations or relative disposition of servo-information transducers and servo-information tracks for control thereof
    • G11B5/553—Details
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F2200/00—Indexing scheme relating to amplifiers
    • H03F2200/372—Noise reduction and elimination in amplifier

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Power Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Recording Or Reproducing By Magnetic Means (AREA)
  • Digital Magnetic Recording (AREA)
  • Magnetic Heads (AREA)
  • Amplifiers (AREA)
DE69317084T 1992-07-15 1993-07-14 Verstärker für einen magnetoresistiven Sensor Expired - Fee Related DE69317084T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/914,278 US5270882A (en) 1992-07-15 1992-07-15 Low-voltage, low-power amplifier for magnetoresistive sensor

Publications (2)

Publication Number Publication Date
DE69317084D1 true DE69317084D1 (de) 1998-04-02
DE69317084T2 DE69317084T2 (de) 1998-09-17

Family

ID=25434125

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69317084T Expired - Fee Related DE69317084T2 (de) 1992-07-15 1993-07-14 Verstärker für einen magnetoresistiven Sensor

Country Status (5)

Country Link
US (1) US5270882A (de)
EP (1) EP0586062B1 (de)
JP (1) JP2574986B2 (de)
DE (1) DE69317084T2 (de)
SG (1) SG42321A1 (de)

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KR100309085B1 (ko) 1993-10-06 2001-12-17 요트.게.아. 롤페즈 기록매체상의트랙으로부터정보를판독하는장치
DE69428679T2 (de) * 1993-10-06 2002-07-11 Koninkl Philips Electronics Nv Vorrichtung zum auslesen von informationen von einer spur eines aufzeichnungsträgers mit einem schnellstabilisierenden leseverstärker für magnetoresistive köpfe
US5412518A (en) * 1993-12-16 1995-05-02 International Business Machines Corporation Individual MR transducer head/disk/channel adaptive bias current system
US5523898A (en) * 1994-11-08 1996-06-04 International Business Machines Corporation Partial MR sensor bias current during write
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US5717536A (en) * 1995-09-19 1998-02-10 Vtc Inc. Single-ended cascode amplifier for magnetoresistive sensors
US5781042A (en) * 1995-09-19 1998-07-14 Vtc Inc. Modal transition imbalance detector
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US6122127A (en) * 1995-12-28 2000-09-19 Seagate Technology, Inc. Dynamically programmable magneto-resistive head write and read bias currents
US5901001A (en) * 1996-02-20 1999-05-04 Seagate Technology, Inc. Detection of asperities in recording surface of storage medium
US5644454A (en) * 1996-03-11 1997-07-01 International Business Machines Corporation Electrostatic discharge protection system for MR heads
US5691663A (en) * 1996-03-25 1997-11-25 Sony Corporation Single-ended supply preamplifier with high power supply rejection ratio
US5760635A (en) * 1996-03-25 1998-06-02 Sony Corporation Apparatus for switching channels within a multi-channel read/write preamplifier circuit
US5774291A (en) * 1996-03-28 1998-06-30 International Business Machines Corporation Voltage measurement circuit for a magnetoresistive head installed in a disk enclosure
US5898532A (en) * 1996-07-02 1999-04-27 Seagate Technology Inc. MR head thermal asperity recovery
US5831784A (en) * 1996-09-05 1998-11-03 Vtc, Inc. Pseudo differential voltage sense MR preamplifier with improved bandwidth
US6071007A (en) * 1997-05-21 2000-06-06 Seagate Technology, Inc. Thermal asperity detection head
US6134060A (en) * 1997-06-10 2000-10-17 Stmicroelectronics, Inc. Current bias, current sense for magneto-resistive preamplifier, preamplifying integrated circuit, and related methods
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US20030042571A1 (en) * 1997-10-23 2003-03-06 Baoxing Chen Chip-scale coils and isolators based thereon
US6873065B2 (en) * 1997-10-23 2005-03-29 Analog Devices, Inc. Non-optical signal isolator
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US6003364A (en) * 1998-03-19 1999-12-21 Seagate Technology, Inc. Glide head for testing a disc surface
US6899456B2 (en) * 1998-04-16 2005-05-31 Seagate Technology Llc Glide head for asperity detection
EP0973153B1 (de) * 1998-07-17 2007-02-14 Koninklijke Philips Electronics N.V. Magnetische Informationslesevorrichtung
CN1344406A (zh) 1999-04-21 2002-04-10 西加特技术有限责任公司 用于磁盘驱动调节器控制的自适应h型无限硬件控制器
US6420910B1 (en) * 1999-04-27 2002-07-16 International Business Machines Corporation Quasi-current sensing input impedance controlled preamplifier for magnetoresistive elements
US6262600B1 (en) * 2000-02-14 2001-07-17 Analog Devices, Inc. Isolator for transmitting logic signals across an isolation barrier
US6608736B1 (en) 2000-05-08 2003-08-19 International Business Machines Corporation Integrated trace suspension interconnect for high-data-rate single-ended preamplifier for (G)MR elements
US6633441B1 (en) 2000-07-12 2003-10-14 Marvell International, Ltd. Method and apparatus for measuring an output signal of a floating transducer
US6515487B1 (en) * 2000-08-23 2003-02-04 Magnetrol International, Inc. Low voltage low current bubble detection circuit
US7327103B1 (en) * 2001-08-31 2008-02-05 Maxtor Corporation Driver and method for control of voice coil motor in disk drive
US6870696B2 (en) * 2002-01-07 2005-03-22 International Business Machines Corporation CMOS low-noise MR read head pre-amplifier circuit
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US6754015B2 (en) 2002-03-29 2004-06-22 Seagate Technology Llc MR heads thermal asperity cancellation
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US7075329B2 (en) * 2003-04-30 2006-07-11 Analog Devices, Inc. Signal isolators using micro-transformers
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US8049573B2 (en) * 2004-06-03 2011-11-01 Silicon Laboratories Inc. Bidirectional multiplexed RF isolator
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US8198951B2 (en) 2004-06-03 2012-06-12 Silicon Laboratories Inc. Capacitive isolation circuitry
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US7737871B2 (en) * 2004-06-03 2010-06-15 Silicon Laboratories Inc. MCU with integrated voltage isolator to provide a galvanic isolation between input and output
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Also Published As

Publication number Publication date
JPH06103506A (ja) 1994-04-15
EP0586062B1 (de) 1998-02-25
SG42321A1 (en) 1997-08-15
DE69317084T2 (de) 1998-09-17
EP0586062A1 (de) 1994-03-09
US5270882A (en) 1993-12-14
JP2574986B2 (ja) 1997-01-22

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee