Title:
INTEGRATED ON-BOARD DEVICE AND METHOD FOR THE PROTECTION OF MAGN ETORESISTIVE HEADS FROM ELECTROSTATIC DISCHARGE
Document Type and Number:
WIPO Patent Application WO2001025807
Kind Code:
A8
Abstract:
This invention discloses a circuit including a magnetoresistive sensor (101) and a tunnel junction device (102) coupled to the MR sensor to dissipate the energy associated with an electrical signal exceeding operational voltages for the sensor. The tunnel junction can include a first conducting layer (104), a second conducting layer (106), and a barrier material (105) positioned between the first and the second conducting layer. The barrier material can be positioned so that the first conducting layer and the second conducting layer do not make contact. The MR sensor can be connected in parallel to the first and second conducting layer. The tunnel junction can be made of a material with a resistance more than the MR sensor's resistance at operational voltages and a resistance below the MR sensor's resistance at larger voltages. sensor.
Inventors:
GRANSTROM ERIC LEROY
TABAT NED
TABAT NED
Application Number:
PCT/US2000/027517
Publication Date:
January 09, 2003
Filing Date:
October 05, 2000
Export Citation:
Assignee:
SEAGATE TECHNOLOGY LLC (US)
International Classes:
G11B5/40; G11B5/39; H01L43/08; G11B5/11; G11B5/48; (IPC1-7): G11B5/40; G01R33/09
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