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參數(shù)資料
| 型號： | P32P4911A |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 光電元器件 |
| 英文描述： | PRML Read Channel with PR4, 8/9 ENDEC, FWR Servo |
| 中文描述： | 1 CHANNEL READ CHANNEL, PQFP100 |
| 封裝： | 14 X 14 X 1.40 MM, PLASTIC, LQFP-100 |
| 文件頁數(shù)： | 52/63頁 |
| 文件大?。?/td> | 257K |
| 代理商： | P32P4911A |
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1996 Jul 25
52
Philips Semiconductors
Product specification
PRML Read Channel with PR4,
8/9 ENDEC, FWR Servo
P32P4911A
I
NTERNAL
AC C
OUPLER
C
HARACTERISTICS
Unless otherwise specified, Measured at TPC+/TPC- and TPD+/TPD- pins loaded with 5 pF.
Symbol
Parameter
ATO Buffer Characteristics
Unless otherwise specified, measured at ATO pin loaded with 5 pF. VIA
±
input signal has no asymmetry.
Symbol
Parameter
Test Conditions
Programmable Filter Characteristics
Unless otherwise specified, recommended operating conditions apply. The input signals are AC coupled to VIA+ and
VIA-. All specifications identical for identical data and servo register settings.
Data uses C
BYP
from BYP to VPA and servo uses C
BYPS
from BYPS to VPA.
Symbol
Parameter
cr
Filter cutoff range
Test Conditions
Min.
Nom.
Max.
Unit
Offset voltage
LOWZ Time Constant
Non LOWZ Time Constant
ACCPL = 0
LOWZ = 1, LZCTR = X
LOWZ = 0, LZCTR = 0
LOWZ = 0, LZCTR = 1
-35
+35
mV
μ
s
μ
s
μ
s
0.3
5
1.5
Min.
Nom.
Max.
Unit
Reference voltage
Swing
Source Impedance
Drive Capability
ATOSEL 1-0 = 00
From Reference Voltage
Typ. - 100
-0.6
MAXREF/2
Typ. +100
V
V
mA
+0.6
50
+5/-3
+/- refers to source/sink
+2/-2
Test Condition
Min.
Nom.
Max.
Unit
c (MHz) = 0.301 * FC - 1.142
44
≤
FC
≤
117
c (MHz) = 0.277 * FCS - 0.08
14
≤
FC
≤
43
0 dB Boost
44
≤
FC
≤
117
14
≤
FC
≤
43
in = 0.67 *
c
0 dB Boost
Mismatch =
ODgONgain
4-34
MHz
ca
Filter
c Accuracy
-15
-20
+15
+20
%
OD gain to ON gain
mismatch
%
-30
+30
%
Boost @ Fc
Boost (dB) = 20 * log [0.021848 *
FB + 0.000046 * FB * FC +1]
Boost = 13 dB
Boost = 9 dB
THD = 2.5%,
in = 0.67 *
c, C
L
= 15 pF
0
13
dB
Boost accuracy
-2.0
-1.7
1.4
+2.0
+1.7
dB
dB
Vpp
Filter Output Dynamic
Range ON
±
ONgain
–
100
×
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