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Philips TDA5360 manual

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Table of contents for the manual

  • Page 1

      TDA5360 Pre–Amplifier for Hard Disk Drive with MR-Read / Inductive W rite Heads Objective specification, Revision 2.2 1998 Jul 30 INTEGRA TED CIRCUITS[...]

  • Page 2

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 2 1 FEATURES 2 APPLICATIONS 3 QUICK REFERENCE DATA 4 DESCRIPTION 5 ORDERING INFORMATION 6 BLOCK DIAGRAM 7 PINOUT DIAGRAM 8 PIN DESCRIPTIONS 9 FUNCTIONAL DESCRIPTION 9.1 ACTIVE READ MODE 9.2 ACTIVE [...]

  • Page 3

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 3 1 FEATURES • 12 channels design for Single-stripe (SAL and GMR) Read / Thin-film Write heads. • Design target 350 Mbps, for d=0 (16 / 17) rate code. • Differential Hybrid sense Reader archi[...]

  • Page 4

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 4 3 QUICK REFERENCE DATA SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT V CC DC Supply voltage +4.5 +5 +5.5 V V EE -4.5 -5 -5.5 V NF Noise Figure Note 3, Section 14 1.7 1.7 dB IRNV Input Referred [...]

  • Page 5

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 5 4 DESCRIPTION The +/- 5.0 volt pre-amplifier for HDD described here has been designed for 12 terminals, comprised of a SAL or GMR magneto-resistive reader and an inductive thin film writer. In re[...]

  • Page 6

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 6 6 BLOCK DIAGRAM HEADMUX d/dt Av MUX SERIAL INTERFACE FAULT DETECTION BUFFER MR BIAS / POWER SETTING WRITE BANDGAP THERMAL ASPERITY DETECTOR RDp RDn FLT Rext WDp WDn SDATA SCLK SEN + CURRENT RFE h[...]

  • Page 7

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 7 7 PAD ARRANGEMENT Fig.2 TDA5360 pad arrangement pads up. WN11 WP11 RP11 RN11 RN10 RP10 WP10 WN10 WN9 WP9 RP9 RN9 RN8 RP8 WP8 WN8 VEE WN4 WN5 WN6 WP5 RP5 RN5 RN4 RP4 WP4 VCC WN7 WP7 RP7 RN7 RN6 RP[...]

  • Page 8

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 8 8 PAD DESCRIPTION SYMBOL Pin Description VCC +5V supply GND Ground VEE -5V supply RDP,RDN output Read Data, Differential read signal outputs RWN logic input Read/Write : read = HIGH, write = LOW [...]

  • Page 9

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 9 9 FUNCTIONAL DESCRIPTION 9.1 Active READ mode Taking RWN high and programming bits MODE0 and MODE1 (see Reg.09) selects the read mode. The Head select inputs, in serial register, select the appro[...]

  • Page 10

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 10 9.2 Active WRITE mode Taking RWN low from an Active READ mode selects the Active WRITE mode. The head select inputs, in a serial register, select the appropriate head. In write mode the circuit [...]

  • Page 11

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 11 9.5 SLEEP mode The sleep mode is selected by programming bits MODE0 and MODE1. (see Reg.09) In Sleep Mode, the IC is accessible via the Serial Interface. All circuits, other than those of the CM[...]

  • Page 12

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 12 10 BIASING OF THE MR ELEMENT This preamplifier has been designed for SAL and GMR elements. Programming bit GMR in Reg. 01 select either a SAL range (LOW) or a GMR range (HIGH). By programming bi[...]

  • Page 13

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 13 10.2 Fault Mode Fault conditions are indicated on the FLT pin (HIGH during write mode and LOW during read mode). The fault condition is coded and stored in Reg. 07 for monitoring purposes. The f[...]

  • Page 14

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 14 The following are valid READ fault conditions which set FLT=LOW • Rext pin open or shorted to GND or Vcc • Thermal Asperity detected • Read Head open • Power supplies too low (VCC and/or[...]

  • Page 15

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 15 10.3 Serial Interface Address bit Allocation 10.4 Serial Interface Register bit Allocation 9 Register A 7 A 6 A 5 A 4 A 3 A 2 A 1 A 0 0 X 0 0 0 0 CS1 CS0 RWN 1 X 0 0 0 1 CS1 CS0 RWN 2 X 0 0 1 0 [...]

  • Page 16

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 16 10.5 Serial Interface Operations The serial interface communication consists of an adress word of 8 bits followed by a data word of 8 bits. See section 11, page 24 and 25 for timing diagrams. 10[...]

  • Page 17

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 17 10.6 Registers description Nb Register Name Contents 0 Head Select Register HS3..HS0 = 0,0,0,0 to 1,0,1,1 = H0 to H11 SELT : if HIGH, the multiple selection detector is enabled. Inactive in STW [...]

  • Page 18

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 18 3 Reader Bandwith Register HFZ3, HFZ2, HFZ1, HFZ0 = high frequency gain boost/ differentiator control ( Note 3 ) LFP1, LFP0 = low frequency pole. (0,0) = 1 MHz (0,1) = 2 MHz (1,0) = 3 MHz (1,1) [...]

  • Page 19

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 19 8 Measurement Register M4...M0 = 5 bits for Rmr/Temperature digitazation (read back only bits) RANGE1,RANGE0 = 2bits to define which measurement to be done (0,0) RMR measurement for 15 Ω < [...]

  • Page 20

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 20 Note 0 : MDS (Multiple Device Selected) detector : When several preamps are connected in parallel, this function allows the user detection of wrong adressing withing the preamps. When SELT is hi[...]

  • Page 21

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 21 Formula to link real TAD threshold with LF pole of the reader and programmed input impedance : where : fLFP is the low frequency pole of the read amplifer (1 to 4 MHz, programmable via Reg. 03) [...]

  • Page 22

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 22 - Temperature digitizer This measurement can be done either in Active Read mode or in Active Write mode. Note 9a : RSTDMY define DRN pin functionality Note 9b : MODE1,MODE0 power management cont[...]

  • Page 23

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 23 The aim of the TAC is to limit the amplitude and the duration of the perturbation seen at the reader output. Because thermal asperity amplitude is not constant, the TAC need some threshold progr[...]

  • Page 24

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 24 11 SERIAL INTERFACE TIMING 0...Reg.00 H SEN SCLK SDATA a0=0 a2 a1 a3 a4 a5 a6 a7 Address Data 1 Tclk 0.5 Tclk d0 d1 d2 d3 d4 d5 d5 d7 SEN SCLK SDATA a0=1 a2 a1 a3 a4 a5 a6 a7 Address Data 2 Tclk[...]

  • Page 25

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 25 (*) either positive or negative, but ABS (tclklow) > 5ns SEN timing Description Min Nom Max Unit tr_sen_sclk 90% of SEN to 10% of SCLK 5 ns tf_sclk_sen last SCLK to 90% of SEN 5 ns tr,tf rise[...]

  • Page 26

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 26 12 ELECTRICAL PARAMETERS 12.1 DC Characteristics Unless otherwise specified, recommended operating conditions apply CS0=CS1=LOW, DRN=HIGH, BFAST=LOW, STWn=HIGH, RIN=18 Ohm, LFP = 1MHz, Imr = 8mA[...]

  • Page 27

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 27 12.2 Read Characteristics Unless otherwise specified, recommended operating conditions apply. Voltage compliance for WDP and WDN in current mode CMM of the inputs in current mode 1.5 Vcc -1.7 V [...]

  • Page 28

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 28 C IN Differential Input Capacitance 10 pF R IN Differential Input Resistance RIN0=0, RIN1=1 18 Ohm DR Dynamic Range AC input where AVd falls to 90% of its value at@f = 20MHz TBD mV PP CMR Common[...]

  • Page 29

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 29 12.3 Write Charateristics Unless otherwise specified, recommended operating conditions apply, I W =50mA, L H =75nH, R H = 10 Ω , f DATA =5MHz, Ambient temperature. SYMBOL PARAMETERS CONDITIONS[...]

  • Page 30

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 30 12.4 Switching Characteristics Unless otherwise specified, recommended operating conditions apply Notes: 1. The differential peak to peak voltage swing could be from 0.4V to 1.5V and the common [...]

  • Page 31

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 31 5. The noise figure is defined as : NF[dB] = 10xlog[(Vnout/Av) 2 / (4kTxR MR )] where Av is the gain and Vnout is the noise voltage at the output of the amplifier 6. See Section 11 for Serial In[...]

  • Page 32

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 32 13 LIMITING VALUES / RECOMMENDED OPERATION CONDITIONS In accordance with the Absolute Maximum System (IEC 134) SYMBOL PARAMETER CONDITIONS MIN. TYP MAX. UNIT V CC Positive Supply voltage range n[...]

  • Page 33

    1998 July 30 Philips Semiconductors Objective Specification, Revision 2.2 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads TDA5360 33 Notes 1. A supply by-pass capacitor from V CC to ground or a low pass filter may be used to optimize the PSRR. 2. A supply by-pass capacitor from V EE to ground or a low pass filter may be used [...]

  • Page 34

    Philips Semiconductors Objective specification, Revision 2.2 TDA5360 Pre-Amplifier for Hard Disk Drive with MR-Read / Inductive Write Heads Definitions Short-form specification — The data in a short-form specification is extracted from a full data sheet with the same type number and title. For detailed information see the relevant data sheet or d[...]