TDA5155X Philips Semiconductors, TDA5155X Datasheet
TDA5155X
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TDA5155X Summary of contents
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DATA SHEET TDA5155 Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads Preliminary specification File under Integrated Circuits, IC11 INTEGRATED CIRCUITS 1997 Apr 08 ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads CONTENTS 1 FEATURES 2 APPLICATIONS 3 GENERAL DESCRIPTION 4 ORDERING INFORMATION 5 QUICK REFERENCE DATA 6 BLOCK DIAGRAM 7 PINNING 8 FUNCTIONAL DESCRIPTION 8.1 Read mode 8.2 Write mode 8.3 Sleep mode 8.4 Standby mode 8.5 Active mode 8.6 Bi-directional serial interface 8 ...
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... APPLICATIONS Hard Disk Drive (HDD). 4 ORDERING INFORMATION TYPE NUMBER NAME TDA5155X naked die 1997 Apr 08 3 GENERAL DESCRIPTION The 5.0 V pre-amplifier for HDD applications has been designed for five terminal, dual-stripe Magneto-Resistive (MR)-read/inductive write heads. The disks of the disk drive are connected to ground. ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 5 QUICK REFERENCE DATA SYMBOL PARAMETER V supply voltage CC V supply voltage for write drivers CC(WD) G differential voltage gain v(dif frequency bandwidth 3dB F noise figure V input referred noise voltage irn ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 6 BLOCK DIAGRAM handbook, full pagewidth 6 WDlx(i) 7 WDly(i) WRITE DRIVER 4 INPUT WDlx(v) 5 WDly(v) 3 HEAD UNSAFE HUS INDICATOR LOW SUPPLY VOLTAGE INDICATOR 17 R ext + R/W 11 SERIAL SCLK INTERFACE 9 SEN ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 7 PINNING SYMBOL PAD DESCRIPTION V 1 supply voltage for the write drivers CC(WD) GND1 2 ground connection 1 HUS 3 head unsafe output WDIx(v) 4 write data input (differential, voltage input) WDIy(v) 5 write data input (differential, voltage ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads SYMBOL PAD DESCRIPTION 7Wy 55 inductive write head connection for head H7 (differential x 7Rx 56 MR-read head connection for head H7 (differential x 7GND 57 ground connection for head H7 7Ry 58 MR-read head connection for head ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 8 FUNCTIONAL DESCRIPTION 8.1 Read mode The read mode disables the write circuitry to save power while reading. The read circuitry is disactivated for write, sleep and standby modes. The read circuitry may also be biased during write mode to shorten transients ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 8.3 Sleep mode In sleep mode, the device is accessible via the serial interface. All circuits are inactive, except the circuits of the CMOS serial interface and the circuitry which forces the ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads handbook, full pagewidth SEN SCLK SDATA a0 a1 Fig.3 Timing diagram of the write sequence of the serial interface operation (a7 = logic 0). handbook, full pagewidth SEN SCLK SDATA a0 a1 Fig.4 Timing diagram of the read sequence of the serial interface operation a7 = logic 1). ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 8.7 Operation of the serial interface The serial interface programming is summarized in Section 8.7.10. 8.7.1 C ONFIGURATION d0: By default (d0 = logic 0), write data passes from the write data input via the data flip-flop to the write driver. ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 8.7.5.3 Thermal asperity detector d2 = logic (0,1). Unlike the above tests, the thermal asperity detection does not use the RDx and RDy outputs. Thus, the reader is fully operational. In case a thermal asperity is detected flagged at the HUS pin ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads (1) ADDRESS REGISTERS ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 8.8 Head unsafe The HUS pin is an open collector output. Therefore when the pin is not connected to an external pull-up resistor, HUS is LOW. HUS pins can be connected together in case of operation with more than one amplifier used to detect abnormal or unexpected operation ...
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... Inputs and outputs are protected against electrostatic discharge in normal handling. However totally safe desirable to take normal precautions appropriate to handling integrated circuits. 11 THERMAL CHARACTERISTICS The thermal resistance depends on the flex used. The TDA5155X is shipped in naked dies form. 1997 Apr 08 PARAMETER ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 12 RECOMMENDED OPERATION CONDITIONS SYMBOL PARAMETER V supply voltage CC V write driver supply voltage CC(WD) V HIGH level input voltage (CMOS LOW level input voltage (CMOS differential input voltage i(dif)(p-p) ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads Notes to the recommended operating conditions 1. A supply by-pass capacitor from V low pass filter may be used to optimize the PSRR. 2. The supply voltage V CC(WD) in normal mode, and two diode 1.4 V above V servo mode ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 13 CHARACTERISTICS CC(WD) GND SYMBOL PARAMETER Read characteristics I MR current adjust range MR I tolerance (excluding differential voltage gain; v(dif) note 1 R differential input resistance i(dif) C differential input ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads SYMBOL PARAMETER DR rejection ratio of SCLK and SDATA; note 6 V output DC offset voltage in O(R)(dif) read mode (differential after DC settling) Z output impedance in read o(R) mode I maximum differential o(max)(dif) output current ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads SYMBOL PARAMETER Switching characteristics f serial interface clock rate SCLK V common mode DC output o(cm) voltage change from read to write mode t write-to-read recovery time rec(W-R) (AC and DC settling); note 9 t head switching (in read ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads Notes to the characteristics 1. The differential voltage gain depends on the MR resistance. It can be improved by programming the d4 bit in the configuration register. 2. The gain boost implements a pole-zero combination: The +3 dB gain boost corner frequency is ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads Table 1 Noise figure handbook, full pagewidth R/W RDx-RDy Fig.5 Timing diagram of the reader: write-to-read switching on the same logic head. handbook, full pagewidth SEN RDx-RDy Fig.6 Timing diagram of the reader: typical head, current and standby-to-read characteristics. ...
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... Philips Semiconductors Pre-amplifier for Hard Disk Drive (HDD) with MR-read/inductive write heads 14 DEFINITIONS Data sheet status Objective specification This data sheet contains target or goal specifications for product development. Preliminary specification This data sheet contains preliminary data; supplementary data may be published later. ...
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... Tel. +46 8 632 2000, Fax. +46 8 632 2745 Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH, Tel. +41 1 488 2686, Fax. +41 1 481 7730 Taiwan: Philips Semiconductors, 6F, No. 96, Chien Kuo N. Rd., Sec. 1, TAIPEI, Taiwan Tel. +886 2 2134 2865, Fax. +886 2 2134 2874 Thailand: PHILIPS ELECTRONICS (THAILAND) Ltd., 209/2 Sanpavuth-Bangna Road Prakanong, BANGKOK 10260, Tel ...