參數(shù)資料
型號: VSC7940W
廠商: VITESSE SEMICONDUCTOR CORP
元件分類: 其它接口
英文描述: SONET/SDH 3.125Gb/s Laser Diode Driver with Automatic Power Control
中文描述: SPECIALTY INTERFACE CIRCUIT, UUC48
封裝: DIE-48
文件頁數(shù): 2/16頁
文件大?。?/td> 167K
代理商: VSC7940W
VITESSE
Preliminary Data Sheet
VSC7940
SONET/SDH 3.125Gb/s
Laser Diode Driver with Automatic Power Control
Page 2
G52357-0, Rev 3.2
05/11/01
VITESSE
SEMICONDUCTOR CORPORATION
741 Calle Plano
Camarillo, CA 93012
Tel: (800) VITESSE
FAX: (805) 987-5896
Email: prodinfo@vitesse.com
Internet: www.vitesse.com
Electrical Characteristics
Table 1: AC Specifications
AC specifications are guaranteed by design and characterization. Typical values are for 5V operation.
NOTES: (1) Measured with 622Mb/s 0-1 pattern, LATCH=high. (2) PWD = (wider pulse - narrower pulse) / 2).
Table 2: DC Specifications
Symbol
Parameter
Min
Typ
Max
Units
Conditions
t
SU
Input Latch Setup Time
100
ps
LATCH=high
t
H
Input Latch Hold Time
100
ps
LATCH=high
Enable/Start-up Delay
250
ns
t
R
Output Rise Time
TBD
TBD
ps
20% to 80%
t
F
Output Fall Time
TBD
TBD
ps
20% to 80%
PWD
Pulse Width Distortion
10
50
ps
See Notes 1, 2
CID
MAX
Maximum Consecutive Identical Digits
80
bits
t
J
Jitter Generation
7
20
ps
p-p
Jitter BW=12kHz to 20MHz,
0-1 pattern.
Symbol
Parameter
Min
Typ
Max
Units
Conditions
V
SS
Power Supply Voltage
4.75
5.0
5.25
V
I
CC
Power Supply Current
TBD
45
mA
R
MODSET
=7.3k
R
BIASMAX
=4.8k
I
BIAS
and I
MOD
excluded, V
CC
=5V
Voltage at BIAS pin=(V
CC
-1.6)
ENABLE=low or
DISABLE=high
(1)
I
BIAS
Bias Current Range
1
100
mA
I
BIAS-OFF
Bias Off Current
100
μA
S
BIAS
Bias Current Stability
230
ppm/
°
C
APC open loop. I
BIAS
=100mA
APC open loop. I
BIAS
=1mA
Refers to part-to-part variation
900
Bias Current Absolute Accuracy
±15
%
VR
MD
I
MD
Monitor Diode Reverse Bias Voltage
1.5
V
Monitor Diode Reverse Current Range
18
1000
μA
Monitor Diode Bias Setpoint Stability
-480
-50
480
ppm/
°
C
I
MD
=1mA
(2)
I
MD
=18μA
(2)
Refers to part-to-part variation
90
Monitor Diode Bias Absolute Accuracy
-15
15
%
I
MOD
Modulation Current Range
5
100
mA
I
MOD-OFF
Modulation Off Current
200
μA
ENABLE=low or
DISABLE=high
(1)
Modulation Current Absolute Accuracy
±15
%
See Note 2
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