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參數(shù)資料
| 型號： | TDA5153BG |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 光電元器件 |
| 英文描述： | Pre-amplifier for Hard Disk Drive HDD with MR-read/inductive write heads |
| 中文描述： | 4 CHANNEL READ WRITE AMPLIFIER CIRCUIT, PQFP48 |
| 封裝： | 7 X 7 MM, 1.40 MM HEIGHT, PLASTIC, SOT-313, LQFP-48 |
| 文件頁數(shù)： | 18/28頁 |
| 文件大?。?/td> | 128K |
| 代理商： | TDA5153BG |
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1997 Jul 02
18
Philips Semiconductors
Preliminary specification
Pre-amplifier for Hard Disk Drive (HDD)
with MR-read/inductive write heads
TDA5153
12 RECOMMENDED OPERATION CONDITIONS
Notes
1.
2.
A supply by-pass capacitor from V
CC
to ground or a low-pass filter may be used to optimize the PSRR.
The supply voltage V
CC(WD)
must never be below V
CC
in normal mode, and two diode voltages above V
CC
in servo
mode.
3.
The given values should be interpreted in such a way that the single-ended voltage could swing 0.2 to 0.75 V and
that the common mode voltage should be such that for any of the two states, V
IH(max)
< V
CC
and V
IL(min)
> 1.5 V.
PECL voltage swing: a wider peak-to-peak voltage swing can be used. In that case a current will flow through the
--WDIx
WDI inputs. This current is approximately equal to
4.
The mismatch refers to the resistance of the two stripes of the same head. This is defined as follows:
R
MR
=
R
MR1
R
MR2
These parameters depend on the head model. The values given are those used for testing.
The combination of maximum head resistance, lead resistance and bias current is not permitted. To avoid voltage
break-through between heads and disk, the voltage over the MR elements is limited by two diodes.
5.
6.
SYMBOL
PARAMETER
CONDITIONS
MIN.
TYP
MAX.
UNIT
V
CC
V
CC(WD)
V
IH
V
IL
V
i(dif)(p-p)
supply voltage range
write driver supply voltage
HIGH level input voltage (CMOS)
LOW level input voltage (CMOS)
differential input voltage
(peak-to-peak value)
HIGH level PECL input voltage
LOW level PECL input voltage
ambient temperature
junction temperature
note 1
note 2
4.5
V
CC
3.5
0
0.4
0.7
5.5
8.8
V
CC
0.8
1.5
V
V
V
V
V
note 3
V
IH(PECL)
V
IL(PECL)
T
amb
T
j
note 3
note 3
1.5
0
15
0.4
2.85
2.15
28
35
1.5
1
V
CC
70
110
130
34
4
0.5
2
V
V
°
C
°
C
°
C
nH
V
mV
reading
writing (V
CC(WD)
= 8 V)
R
MR
R
MR
L
l(tot)
R
l(tot)
V
MR
V
sig(dif)(p-p)
differential MR head input signal
(peak-to-peak value)
L
wh
write head inductance
R
wh
write head resistance
C
wh
write head capacitance
R
ext
external reference resistor
MR element resistance
R
MR
mismatch
total lead inductance to the head
total lead resistance to the head
voltage on top of MR elements
note 4
in each lead; note 5
in each lead; note 5
note 6
including lead; note 5
including lead; note 5
including lead; note 5
V
R
ext
0.15
10
5
10
μ
H
pF
k
I
ref
----------
=
WDIy
200
–
)
1.4
–
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