tda5155 NXP Semiconductors, tda5155 Datasheet
tda5155
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tda5155 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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... Write amplifier programmable capacitors 8.7.7 High frequency gain attenuator register 8.7.8 High frequency gain boost register 8.7.9 Settle pulse 8.7.10 Address registers summary 8.8 Head unsafe 8.9 HUS survey 9 LIMITING VALUES 10 HANDLING 11 THERMAL RESISTANCE 12 RECOMMENDED OPERATION CONDITIONS 13 CHARACTERISTICS 14 DEFINITIONS 15 LIFE SUPPORT APPLICATIONS 1997 Apr 08 Preliminary specification 2 TDA5155 ...
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... Head selection, mode control, testing and servo writing can also be programmed using the serial interface. In sleep mode the CMOS serial interface is operational. Fig.1 shows the block diagram of the device. PACKAGE DESCRIPTION 3 Preliminary specification TDA5155 VERSION ...
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... MHz < 1 MHz f < 100 MHz L = 150 nH mA MHz 8.0 V CC(WD 6.5 V CC(WD ext ext 4 Preliminary specification TDA5155 TYP. MAX. UNIT 5.0 5.5 V 8.0 8.8 V 160 226 220 MHz 3.0 3.2 dB 0.9 1 ...
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... TAS DETECTOR head select CURRENT 5 SOURCE 12, 15, 18 GNDn Fig.1 Block diagram. 5 Preliminary specification TDA5155 V CC(WD 20, 25, 30, 35, 40, 45, 50, 55, 60 nWy nWx 19, 24, 10 29, 34, 39, 44, 49, 54, 59, 64 WRITE DRIVER AND READ PREAMP (10 ) 23, 28, 33, 38, ...
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... Preliminary specification TDA5155 DESCRIPTION 30 inductive write head connection for head H2 (differential MR-read head connection for head H2 (differential ground connection for head H2 33 MR-read head connection for head H2 (differential ...
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... TDA5155 Fig.2 Pad arrangement. 7 Preliminary specification TDA5155 DESCRIPTION 62 ground connection for head H8 63 MR-read head connection for head H8 (differential inductive write head connection for head H9 (differential inductive write head connection for head H9 (differential x ...
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... The static current in the write 4d2 2d1 coil ---------------- - , ------ - R d where the damping resistor Preliminary specification TDA5155 V V – WDIx v WDIy v ----------------------------------------------------- - 2 + 16d4 + 8d3 + 4d2 + 2d1 R ext = 20 mA the current provided the resistance of the coil including leads and h + ...
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... If SEN goes LOW before the 8 data bits have been sent out of the IC, the reading sequence is immediately interrupted. See Fig.4 for the timing diagram of the reading via the serial interface. 9 Preliminary specification TDA5155 ...
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... SCLK SDATA Fig.4 Timing diagram of the read sequence of the serial interface operation a7 = logic 1). 1997 Apr address wait cycles address 10 Preliminary specification TDA5155 data MGG983 data MGG984 ...
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... The temperature monitor voltages are connected to RDx and RDy. The output differential voltage depends on the temperature according to 0.00364 0 < T < 140 C. The temperature may be measured with a typical precision Preliminary specification TDA5155 T + 1.7; ...
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... addressing H10 to H15 causes HUS to go HIGH if in write mode and selected if in read mode 12 Preliminary specification TDA5155 H IGH FREQUENCY GAIN BOOST REGISTER S ETTLE PULSE 1 + ------------------------------------------------------------------ - s 4.d2 2 ...
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... ID register ID = 8.d3 + 4.d2 + 2.d1 + 1.d0 are preset to (0,0,1,1) SDATA 13 Preliminary specification TDA5155 FUNCTION 8.d3 4.d2 2. 4.d2 2. MR1 MR2 = 5 mA fixed) MR2 2 pF 800 MHz 4 ...
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... CC head open detection time is 15 ns. HUS STATE Read Read mode A-test mode TAS mode Write Write mode A-test mode Servo mode 14 Preliminary specification TDA5155 (1) (2) and V conditions (write current inhibit CC CC(WD) DATA BIT D3 0 HIGH HIGH HIGH HIGH ACTIVE HIGH ...
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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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... V) CC(WD) 15 note 5 in each lead; note 6 in each lead; note 6 note 7 0.4 including lead; note 6 including lead; note 6 including lead; note 6 V ref I = ---------- - ref R ext 16 Preliminary specification TDA5155 TYP MAX. UNIT 5 0.8 V 0.7 1 2.15 V 0.8 1 ...
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... The data given in the table are those used for testing. is more than 7. The combination of maximum head resistance, lead IL(PECL) resistance and bias current is not permitted. To avoid voltage breakthrough between heads and disk, the voltage over the MR elements is limited by two diode voltages. 1.4 – 17 Preliminary specification TDA5155 ) = abs MR1 MR2 ...
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... C; amb no lead inductance unselected head f < 1 MHz < 100 MHz from nRx-nRy to RDx-RDy R mismatch < < 1 MHz f < 100 MHz 18 Preliminary specification TDA5155 MIN. TYP. MAX. 5 20.5 4 160 226 100 220 170 3.0 3.2 0.9 1.0 ...
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... mA MHz 8.0 V CC(WD 6.5 V CC(WD) percentage logic asymmetry) write head short-circuited, data flip-flop by-passed not-selected head 19 Preliminary specification TDA5155 MIN. TYP. MAX 1.0 1.5 2 200 5 1.8 2.1 and ...
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... mA) WR from falling edge of SEN to write head active mA; note mA; note 13 WR from from CC(WD) static ext 20 Preliminary specification TDA5155 MIN. TYP. MAX. UNIT 25 MHz 200 mV 3 4.5 s 100 150 ...
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... R/W pin. 12. The typical supply current in read mode depends on the bias current for the MR element. 13. The typical supply current in write mode also depends on the write current. 21 Preliminary specification TDA5155 log , where G is the differential input = ------ - ...
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... 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. 1997 Apr 08 F (dB 2.7 2.9 2.8 3.0 2.9 3.1 t rec(W-R) t sw(R) 22 Preliminary specification TDA5155 3.1 3.3 3.5 t off(R) MGG985 MGG986 ...
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... Philips customers using or selling these products for use in such applications their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale. 1997 Apr 08 23 Preliminary specification TDA5155 ...
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Philips Semiconductors – a worldwide company Argentina: see South America Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113, Tel. +61 2 9805 4455, Fax. +61 2 9805 4466 Austria: Computerstr. 6, A-1101 WIEN, P.O. Box 213, Tel. + ...