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參數(shù)資料
| 型號： | MB4138 |
| 廠商： | Fujitsu Limited |
| 英文描述： | Read/Write Amplifier(讀/寫放大器) |
| 中文描述： | 讀/寫放大器（讀/寫放大器） |
| 文件頁數(shù)： | 8/18頁 |
| 文件大小： | 138K |
| 代理商： | MB4138 |
MB4138
8
Parameter
Remarks
Values
Symbol
Unit
Condition
Mode
Min.
Typ.
Max.
(Continued)
(Unless otherwise specified, V
CC
= 5.0V
±
10%, Ta = +25
°
C, MR head resistance RMR = 36
,
thin film head Lh = 240 nH, Rh = 15
, C1 = 0.1
μ
F, C2 = 0.1
μ
F, C3 = 0.033
μ
F, C4 = 0.033
μ
F)
VOFF = V
RDX
– V
RDY
RDX, RDY output
offset
VOFF
R/W
– 300
0
300
mV
High
potential
side
VRSH
R/W2
—
V
CC
– 1.5
—
V
Selected read head
voltage
RRC = 4.3 k
VRUS
I/R/W
—
—
V
RRC = 4.3 k
Non-selected read
head voltage
V
CC
– 3.0
VVHR
I/R/W
—
V
CC
– 1.5
—
V
RRC = 4.3 k
VHR pin voltage
Read head - VHR
voltage difference
VHR = | V
VHR
– V
RSH
|
VHR
R/W2
—
0
180
mV
C3X, C3Y read
current
IC3X, Y
—
0
3
μ
A
VC3X, Y = 3V
Write head input
current
IHW
– 50
0
50
μ
A
IHWF
Write head current for
non-selected heads
—
—
– 50
0
50
μ
A
W
I/R
W
Write current
constant
KW
W
0.93
0.98
1.05
V
RWC = 32
KW =
Ih
×
RWC
WC pin voltage
I/R
—
0
100
mV
W
0.93
1.05
1.17
VWC1
VWC2
—
—
Head clip voltage
Head clip voltage
difference
WUS output current
VCL
W
—
0
250
mV
IWUS
0
50
μ
A
I/R
VCL1, 2
W
—
2.0
—
V
V
VHR = | VCL1 – VCL2 |
RWC = 32
RWUS = 1k
—
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