cxa3239tn Sony Electronics, cxa3239tn Datasheet

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cxa3239tn

Manufacturer Part Number
cxa3239tn
Description
6/4-channel Read/write Amplifier For Gmr-ind Head Hard Disk Drive
Manufacturer
Sony Electronics
Datasheet
For the availability of this product, please contact the sales office.
Description
amplifier for GMR-Ind (Giant Magneto Resistive-
Inductive) heads used in hard disk drives, and is
capable of supporting up to six channels.
Features
• +5 V and –3 V power supply.
• Current bias voltage sense type.
• Drives up to six heads (CXA3238TN)
• Drives up to four heads (CXA3239TN)
• Low power 180 mW at Read
• Differential read amplifier gain ; 140/190
• Input noise of 0.77 nV/
• Recovery time write to read ; 300 nsec. (typ.)
• Write data is triggered by differential P-ECL signal.
• Servo bank write. (All channels)
• Write unsafe detection circuit.
• Serial port …
Applications
Structure
The CXA3238TN/CXA3239TN is a Read/Write
Hard disk drives with GMR-Ind heads.
Bipolar silicon monolithic IC
6/4-channel Read/Write Amplifier for GMR-Ind Head Hard Disk Drive
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
Head selection
MR bias
Write current
R
MR
CXA3238TN/CXA3239TN
=50 , I
Hz (typ.),
B
=6.0 mA.
(R
MR
=50 )
—1—
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
• Supply voltage
• Digital input voltage
• Operating temperature
• Storage temperature
• Allowable power dissipation
Operating Conditions
• Supply voltage
• MR bias voltage
• Bias current
• Write current
TSSOP38
38 pin TSSOP (Plastic)
Topr
Tstg
V
V
V
V
V
Vdi –0.3 to V
P
I
I
CC
CC
MR
W
EE
EE
B
D
–300 to +300 mV
+4.4 to +5.5
–4.5 to +0.3
–55 to +150
–4.0 to –2.6
–20 to +70
–0.3 to +6
15 to 45
3 to 8
1000
CC
E98346C8Y
+0.3 V
mW
mA
mA
°C
°C
V
V
V
V

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cxa3239tn Summary of contents

Page 1

... Features • and –3 V power supply. • Current bias voltage sense type. • Drives up to six heads (CXA3238TN) • Drives up to four heads (CXA3239TN) • Low power 180 mW at Read • Differential read amplifier gain ; 140/190 • Input noise of 0.77 nV/ Hz (typ ...

Page 2

... CAP W0X DRIVER 16 W0Y 17 R0X AMP 18 R0Y 19 W1X CXA3238TN Bias Serial Interface current source Write current source WD BUF AMP —2— CXA3238TN/CXA3239TN 38 R5Y AMP 37 R5X 36 W5Y DRIVER 35 W5X 34 W4X DRIVER 33 W4Y 32 R4X AMP 31 R4Y 30 R3Y AMP 29 R3X 28 W3Y DRIVER ...

Page 3

... R/XW 17 SDEN 18 CAP 19 VEE CXA3239TN Bias AMP current source Write current source DRIVER DRIVER AMP DRIVER AMP AMP DRIVER —3— CXA3238TN/CXA3239TN 38 R3Y 37 R3X 36 W3Y 35 W3X 34 W2X 33 W2Y 32 R2X 31 R2Y 30 W1X 29 W1Y 28 R1X 27 R1Y 26 R0Y 25 R0X 24 W0Y 23 ...

Page 4

... Serial control signal input. 14k 2Vf GND 100 Differential P-ECL write data input. 100 GND power supply. Ground V CC 100 Read amplifier output with coupling capacitors. High impedance in the write mode. 1.8mA GND V EE —4— CXA3238TN/CXA3239TN Description ...

Page 5

... Read / Write control signal input. Read when high, Write when low. 3Vf GND Connect an external capacitor of Read 13 amplifier between this pin and –3 V power supply Inductive heads for Write. Six channels are provided. GND V EE —5— CXA3238TN/CXA3239TN Description . EE ...

Page 6

... Pin Symbol Equivalent circuit No. 17 R0X 18 R0Y 21 R1X 22 R1Y 24 R2X R2Y R3X R3Y R4X 31 R4Y 37 R5X 38 R5Y Description heads for Read. Six channels are provided —6— CXA3238TN/CXA3239TN ...

Page 7

... Serial control signal input. 14k 2Vf GND 100 Differential P-ECL write data input. 100 GND power supply. Ground V CC 100 Read amplifier output with coupling capacitors. High impedance in the write mode. 1.8mA GND V EE —7— CXA3238TN/CXA3239TN Description ...

Page 8

... Buffered Head Voltage output. GND V EE Non Connection V CC 100k Read / Write control signal input. Read when high, Write when low. 3Vf GND Connect an external capacitor of Read amplifier between this pin and –3 V power supply. —8— —8— CXA3238TN/CXA3239TN Description . EE ...

Page 9

... W2X 35 W3X 36 W3Y 25 R0X 26 R0Y 27 R1Y 28 R1X R2Y R2X R3X 38 R3Y V CC Inductive heads for Write. Four channels are provided. GND heads for Read. Four channels are provided —9— CXA3238TN/CXA3239TN Description ...

Page 10

... High voltage : 5 V, Low voltage : Pull-down resister : WDV Write data input V WDA I Input voltage : PIH V =3 PIL Vdiff (V – PIH PIL —10— CXA3238TN/CXA3239TN Min. Typ. Max. Unit 2.1 2 100 300 ...

Page 11

... Ripple voltage : 100 mVp-p CMRR1 100 kHz to 50 MHz Ripple voltage : 100 mVp-p CMRR2 51 MHz to 80 MHz Ripple voltage : 100 mVp-p CLRR 4 MHz to 80 MHz V Write to Read OFF1 RDro Differential, read mode —11— CXA3238TN/CXA3239TN Min. Typ. Max. Unit +1.2 +1 ...

Page 12

... DAC code= ‘0101’ R Detect open head OP V Detect short to GND G f WDL transitions on WDX/WDY WS VWthL Fault detected VWthH Fault removed Vhys —12— CXA3238TN/CXA3239TN Min. Typ. Max. Unit 600 750 900 – 200 µ ...

Page 13

... Tsu SDEN to first SCLK (sden) Th Last SCLK to deassert SDEN (sden) f (sclk) Tw (sclk) Tsu ( —13— CXA3238TN/CXA3239TN Min. Typ. Max. Unit 300 500 1.0 µs 600 1000 µs 600 2000 µs 100 ns 100 ns 300 ...

Page 14

... Set MR head open detector active. MRSHT “1” = Set MR head short detector active. IW<3-0> Set write current DATA5 DATA4 DATA3 DATA2 XSLP XIDL N/A HS2 GAIN BHV N/A IB2 MROPN MRSHT IW3 IW2 Function —14— CXA3238TN/CXA3239TN DATA1 DATA0 HS1 HS0 IB1 IB0 IW1 IW0 ...

Page 15

... SDATA into an internal shift register on the rising edge of each clock. As SCLK initial condition, both of Low and High signal is acceptable. SLEEP XSLP=0 IDLE XSLP=1 XIDL=0 R/XW=X Tw (sclk Serial Port Timing —15— CXA3238TN/CXA3239TN WRITE XSLP=1 XIDL=1 R/XW (sden ...

Page 16

... Head select table 6ch HS2 HS1 < 15 MHz +1.2V) to FLT/SE pin by using the pull-up resister(Rse=820 ) . V =V – +5 BHV Head select, HS0 Normal operation none 1 none —16— CXA3238TN/CXA3239TN ...

Page 17

... MR Bias IB2 IB1 Head select, HS0 Normal operation none 1 none 0 none 1 none IB0 I (mA 3.0 1 3.714 0 4.429 1 5.143 0 5.857 1 6.571 0 7.286 1 8.0 —17— CXA3238TN/CXA3239TN ...

Page 18

... Actual head current is defined by the following equation: Ihead=Iw/ (I+Rh/Rd Head Resistance Rd : Damping Resistance (*2) Short X-Y terminal on un-used head Write current IW1 IW0 (mA 0- —18— CXA3238TN/CXA3239TN ...

Page 19

... SCLK R5X 36 SDATA W5Y 35 WDX W5X 34 WDY W4X 33 V W4Y CC 32 GND R4X 31 RDY R4Y 30 RDX R3Y 29 FLT/SE/BHV R3X 28 R/XW W3Y 27 SDEN W3X 26 CAP W2X 25 V W2Y EE R2X 24 W0X W0Y R2Y 23 R0X R1Y 22 R0Y R1X 21 W1X W1Y 20 9.7 mm —19— CXA3238TN/CXA3239TN ...

Page 20

... CXA3239TN TSSOP 38Pin 0.5 mm pitch Package dimension including leads 6 R3Y 37 SCLK R3X 36 SDATA W3Y 35 WDX W3X 34 WDY W2X 33 V W2Y CC 32 GND R2X 31 RDY R2Y 30 RDX W1X 29 FLT/SE/BHV W1Y 28 NC ...

Page 21

... SDATA 4 WDX 5 WDY GND 8 RDY 9 RDX 10 FLT/SE/BHV 11 R/XW 12 SDEN 13 CAP 0 W0X 16 W0Y 17 R0X 18 R0Y 19 W1X —21— CXA3238TN/CXA3239TN 38 R5Y 37 R5X 36 W5Y 35 W5X 34 W4X 33 W4Y 32 R4X 31 R4Y 30 R3Y 29 R3X 28 W3Y 27 W3X 26 W2X 25 W2Y R2X 24 R2Y 23 R1Y 22 R1X 21 ...

Page 22

... WDY 0 GND 8 RDY 9 RDX 10 FLT/SE/BHV R/XW 17 SDEN 18 CAP 0 –3V EE 0.1 F —22— CXA3238TN/CXA3239TN 38 R3Y 37 R3X 36 W3Y 35 W3X 34 W2X 33 W2Y 32 R2X 31 R2Y 30 W1X 29 W1Y 28 R1X 27 R1Y 26 R0Y 25 R0X W0Y 24 W0X ...

Page 23

... SDEN 3300 CAP 1 F VPSRR’ S7’ S6’ 0 W0X 180nH 16 W0Y 25 17 R0X 18 R0Y 25 19 W1X —23— CXA3238TN/CXA3239TN 25 38 R5Y 37 R5X 25 36 W5Y 180nH 35 W5X 34 W4X 180nH 33 W4Y R4X 25 31 R4Y 25 30 R3Y CXA3238TN ...

Page 24

... F S7’ S6’ 0 —24— CXA3238TN/CXA3239TN 25 38 R3Y 37 R3X 25 36 W3Y 180nH 35 W3X 34 W2X 180nH 33 W2Y 25 32 R2X 25 31 R2Y 30 W1X CXA3239TN 180nH 29 W1Y 25 28 R1X 25 27 R1Y 25 R0Y 26 25 R0X 25 W0Y 24 180nH W0X ...

Page 25

... V =5V CC Ta=25 C Bank Write (A3238 Bank Write (A3239) Read 170 s Write Deviation of Bank write current is within 7% at basis of the chart —25— CXA3238TN/CXA3239TN V =– =50 MR IBn=“100” Low gain Ta=25 C 4.5 5 5.5 6 6 Power supply voltage V =– ...

Page 26

... Normalized write current vs Ambient temperature 1. =– =50 MR IBn=“100” 1.02 1 0.98 0.96 –25.0 50.0 75.0 Power supply ON/OFF detector threshold voltage 4.15 4.1 V =–3V EE IWn=“1000” Ta=25 C 4.05 4 3.95 3.9 6 6.5 3.85 –25.0 —26— CXA3238TN/CXA3239TN V = =–3V EE IWn=“1000” 0.0 25.0 50.0 75.0 Ambient temperature Ambient temperature ON OFF OFF ON 0.0 25.0 50.0 75.0 Ambient temperature ...

Page 27

... SONY CODE EIAJ CODE JEDEC CODE 38PIN TSSOP(PLASTIC) 9.8 ± 0 0.225 ± 0.075 0.1 M 0° to 10° DETAIL A PACKAGE STRUCTURE PACKAGE MATERIAL LEAD TREATMENT TSSOP-38P-L121 LEAD MATERIAL PACKAGE MASS —27— CXA3238TN/CXA3239TN 1.2MAX 0.1 0.25 0.05MIN EPOXY RESIN SOLDER PLATING COPPER ALLOY 0.1g ...

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