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L6327 Fiches technique (PDF) - STMicroelectronics

L6327 Datasheet PDF - STMicroelectronics
No de pièce L6327
Télécharger  L6327 Télécharger

Taille du fichier   60.08 Kbytes
Page   4 Pages
Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Description 6 / 4 CHANNEL VOLTAGE SENSE GMR PREAMPLIFIER

L6327 Datasheet (PDF)

Go To PDF Page Télécharger Fiches technique
L6327 Datasheet PDF - STMicroelectronics

No de pièce L6327
Télécharger  L6327 Click to download

Taille du fichier   60.08 Kbytes
Page   4 Pages
Fabricant  STMICROELECTRONICS [STMicroelectronics]
Site Internet  http://www.st.com
Logo STMICROELECTRONICS - STMicroelectronics
Description 6 / 4 CHANNEL VOLTAGE SENSE GMR PREAMPLIFIER

L6327 Fiches technique (HTML) - STMicroelectronics

L6327 Datasheet HTML 1Page - STMicroelectronics L6327 Datasheet HTML 2Page - STMicroelectronics L6327 Datasheet HTML 3Page - STMicroelectronics L6327 Datasheet HTML 4Page - STMicroelectronics

L6327 Détails du produit

DESCRIPTION
L6327/L6332 is a BICMOS monolithic integrated circuit GMR differential preamplifier designed for use with four-terminal magneto-resistive GMR read/inductive write heads. It is available as either a six (L6327) or four (L6332) channel device. The devices consist of a voltage-sense, current-bias or voltage bias (selectable), differential input and differential output, low-noise, high bandwidth read amplifier and include fast current switching write drivers which support data rates in excess of 550 Mb/s with 70nH write heads.

■ Power Supplies +5Vdc, -5Vdc
■ Current bias or voltage bias (selectable) / Differential Voltage Sense architecture
■ 6 or 4 channel versions
■ 38-pin TSSOP package (for either 6 or 4 channels)
■ Internal reference Resistor for read and write currents
■ Read channel -3dB bandwidth > 400MHz (Rmr=50 ohm no interconnect)
■ Input equivalent preamplifier voltage noise 0.5nV/rtHz nominal
■ Input equivalent MR bias current noise 10 pA/ rtHz nominal
■ MR bias current programmable (5 bit DAC) 1.5- 7.0mA nominal MR bias voltage programmable (5 bit DAC) 65-335mV nominal
■ Programmable gain (100V/V, 150, 200 and 250V/V) and read bandwidth
■ Write frequency up to 300 MHz (Lh=70nH, Rh=20 ohms, Ch=2pF, VEE=-5V)
■ Rise/Fall time 0.6ns ( Iw =40mA 0-pk, Lh=70nH, Rh=20 ohms, Ch=2pF, VEE=-5V)
■ Write current programmable (5 bit DAC) 15-60mA
■ PECL write data input
■ Bi-directional 16-bit TTL Serial interface for head selection, read/write currents selection, chip parameters modification, chip enable, vendor code and fault status read back registers
■ 2-pin mode selection (R/W, MRR)
■ Bank write feature for servo write
■ Digital buffered head voltage DBHV / Analog buffered head voltage ABHV pin (gain 5)
■ Thermal asperity detection & correction with adjustable sensitivity level (6 bit DAC)
■ Automatic successive approximation digital measurement of temperature and Rmr (7 bits)
■ Read and write head open/short detection, low low supply detect and temperature monitoring (high temperature warning and Analog Temperature Diode Voltage measurement)
■ Low write frequency detection.
■ WRITE to READ fast recovery 150ns (same head, including 100ns blanking period)
■ Head-to-head switch in READ mode - 10µs (nom)
■ Head and MR bias current switching transient current head protection
■ READ-to-WRITE switching 50ns (same head)
■ Programmable read bias during write and bank write operation
■ ESD diode for GMR head protection




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À propos de STMicroelectronics


Stmicroelectronics est un fabricant multinational d'électronique et de semi-conducteurs basé à Genève, en Suisse.

La société propose une large gamme de produits, notamment des microcontrôleurs, des capteurs, des amplificateurs de puissance et des circuits intégrés pour diverses applications sur les marchés automobiles, industriels et consommateurs.

Fondée en 1987, Stmicroelectronics a des opérations dans plus de 100 pays et est l'une des plus grandes sociétés de semi-conducteurs au monde.

*Ces informations sont fournies à titre informatif uniquement, nous ne serons pas responsables des pertes ou dommages causés par les informations ci-dessus.




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