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PDF CXA3188N Data sheet ( Hoja de datos )
| Número de pieza | CXA3188N | |
| Descripción | 2ch. Read/Write Amplifier for Thin Film Head of Hard Disk Drive | |
| Fabricantes | Sony Corporation | |
| Logotipo |  |
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CXA3188N
2ch. Read/Write Amplifier for Thin Film Head of Hard Disk Drive
For the availability of this product, please contact the sales office.
Description
The CXA3188N is a Read/Write Amplifier for the
thin film head of hard disk drive and designed to
handle up to 2 channel heads.
16 pin SSOP (Plastic)
Features
• Operate on single +5 V power supply
• Low power consumption
Read : 90 mW
Write : 115 mW + IW × 5
Idle : 8 mW
• Designed for two terminal thin-film or MIG heads.
• Read amplifier emitter follower output featuring
200 times gain(typ).
• Differential input capacitance for Read : 6pF (typ)
• Input noise : 0.47 nV / √ Hz (typ)
• Write current range : 10 to 20 mA
• Differential Head voltage swing : 9 Vp-p (typ)
• Differential P-ECL write data input.
• Built-in write unsafe detection circuit.
• Built-in Servo write function.
• Read data outputs are high impedance in write
mode.
• Unselected head voltage is high impedance.
• Self switching damping resistor 380 Ω.
• Built-in supply voltage monitor circuit prohibits
incorrect write during power on or abnormal
voltage.
Absolute Maximum Ratings (Ta=25 °C)
• Supply voltage
VCC 6 V
• Operating temperature Topr –20 to +70 °C
• Storage temperature Tstg –55 to +150 °C
• Allowable power dissipation (on board)
PD 760 mW
• Write current
IW 22 mA
• WUS/SE pin input current
ISEH 15 mA
Operating Conditions
Supply voltage
VCC
5±0.5
V
Function
Read, Write and Write unsafe detection for HDD,
power supply ON/OFF detection.
Structure
Bipolar silicon monolithic IC
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.
—1—
E98128-TE
1 page  
CXA3188N
Electrical Characteristics
Item
(Unless otherwise specified, VCC=5 V, Ta=25 °C, Write current IW=20 mA)
Symbol
Test condition
Min. Typ. Max. Unit.
Current consumption for read
Current consumption for write
Current consumption for idle
Digital input
“Low” input voltage
Digital input
“High” input voltage
Digital input
“Low” input current
Digital input
“High” input current
Write data input current
ICCR
ICCW IW=20 mA
ICCI
VIL
VIH
IIL
“H” applied voltage: 5 V
“L” applied voltage: 0 V
IIH
IWD
11 18 25 mA
14 23 33
mA
+IW +IW +IW
1.1 1.6 2.1 mA
0.8 V
2.0 V
–100
µA
100 µA
50 µA
Write data input voltage range VWDV
VCC–2.5
VCC
V
WD input amplitude
Power supply ON/OFF detector
threshold voltage
Write current setting range
VWDA
VTH
IW
0.3 1 V
3.4 3.9 4.3
V
10 20 mAo-p
Write current voltage
VWC
2.25 2.5 2.75 V
Write current gain
Write current setting constant
Write unsafe output
leak current
Write unsafe output
Low voltage
WUS/SE input current
WUS/SE High input voltage
AW IW=AW • VWC/RWC
18 20 22 mA/mA
When write current is “Iw[mA]”,
KW 46 51 56
IW=KW/RWC. (RWC=3.3 kΩ)
IWUS
50 µA
VWUSL Output current: 1 mA
0.5 V
ISEH Servo write Enabled
VSEH Servo write Enabled
5
VCC
+1.5
14
VCC
+1.6
mA
V
—5—
5 Page 
Application Circuit
CXA3188N
RWC
2.7k 1µ
1µ
16 15 14 13 12 11 10
9
1 23 4 56 7 8
LH LH
5.1k
1µ
Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for
any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same.
—11—
11 Page | ||
| Páginas | Total 16 Páginas | |
| PDF Descargar | [ Datasheet CXA3188N.PDF ] | |
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