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參數(shù)資料
| 型號(hào)： | CXA1940N |
| 廠商： | Sony Corporation |
| 元件分類： | 外設(shè)及接口 |
| 英文描述： | Low Power 5V RS232 Dual Driver/Receiver with 0.1?μF Capacitors; Package: SO; No of Pins: 16; Temperature Range: -40?°C to 85?°C |
| 中文描述： | 電可擦除可編程邏輯器件 |
| 文件頁數(shù)： | 1/16頁 |
| 文件大小： | 225K |
| 代理商： | CXA1940N |
—1—
E93X03-TE
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.
Description
The CXA1940N is a Read/Write Amplifier for the
thin film head of hard disk drives and designed to
handle up to 4-channel heads.
Features
Operate on single +5V power supply.
Low power consumption.
Read : 95mW
Write (I
W
=20mA) : 130mW+I
W
×
5
Power save : 5.5mW
Write current can be varied through an external
resistor. Built-in stabilizing circuit provides stable
current during voltage and temperature drift.
Drives up to 4 heads.
Designed for two-terminal thin-film or MIG heads.
Built-in power save function.
Read amplifier emitter follower output featuring
290 times gain (Typ.).
Built-in Write unsafe detection circuit.
Built-in supply voltage monitor circuit prohibits
incorrect Write during power on or abnormal
voltage.
Built-in IC protection circuit for short of head and
GND.
Differential input capacitance for Read : 14pF
(Typ.).
Write data input minimum pulse width : 10ns
Read data output become high impedance in write
mode to improve read data offset when switching
from write to read mode.
Unselected head DC voltage is GND potential.
Self switching damping resistance (RD=310
)
4ch. Read/Write Amplifier for Thin Film Head of Hard Disk Drive
For the availability of this product, please contact the sales office.
20 pin SSOP (Plastic)
CXA1940N
Block Diagram and Pin Configuration
DRIVER
AMP
DRIVER
DRIVER
DRIVER
CMODE
HEAD
DPOWER
DWRITE
T-FF
V
CC
HS1
HS0
RDX
RDY
PS
R/W
NC
H3X
H2Y
H2X
H1Y
H1X
H0Y
H0X
GND
PROIC
H3Y
WC
WDI
WUS
SOURCE
AMP
AMP
AMP
AMP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
20
19
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