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參數(shù)資料
| 型號： | VSC7938 |
| 廠商： | Vitesse Semiconductor Corporation. |
| 英文描述： | Laser Diode Driver with Automatic Power Control |
| 中文描述： | 激光二極管驅(qū)動器，帶有自動功率控制 |
| 文件頁數(shù)： | 2/16頁 |
| 文件大小： | 213K |
| 代理商： | VSC7938 |
VITESSE
Preliminary Data Sheet
VSC7938
SONET/SDH 3.125Gb/s
Laser Diode Driver with Automatic Power Control
Page 2
G52349-0, Rev 3.0
01/20/01
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 3.3V.
NOTES:(1) Measured with 622Mb/s 0-1 pattern, LATCH=high. (2) PWD = (wider pulse - narrower pulse) / 2).
Table 2: DC Specifications
NOTES: (1) Both I
and I
will turn off if any of the current set pins are grounded. (2)
Assumes laser diode to monitor diode transfer func-
tion does not change with temperature.
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
60
80
ps
20% to 80%
t
F
Output Fall Time
60
80
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
I
CC
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)
APC Open loop. I
BIAS
=100mA
APC Open loop. I
BIAS
=1mA
Refers to part-to-part variation
I
BIAS
Bias Current Range
1
100
mA
I
BIAS-OFF
Bias Off Current
100
μA
S
BIAS
Bias Current Stability
230
900
±15
ppm/
°
C
Bias Current Absolute Accuracy
Monitor Diode Reverse Bias Voltage
Monitor Diode Reverse Current Range
%
V
μA
VR
MD
I
MD
1.5
18
-480
1000
480
Monitor Diode Bias Setpoint Stability
-50
90
ppm/
°
C
I
MD
=1mA
(2)
I
MD
=18μA
(2)
Refers to part-to-part variation
Monitor Diode Bias Absolute Accuracy
Modulation Current Range
-15
5
15
60
%
mA
I
MOD
I
MOD-OFF
Modulation Off Current
200
μA
ENABLE=low or
DISABLE=high
(1)
See Note 2
I
MOD
=60mA
I
MOD
=5mA
Modulation Current Absolute Accuracy
±15
-50
250
%
Modulation Current Stability
-480
480
ppm/
°
C
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| VSC7938W | Laser Diode Driver with Automatic Power Control |
| VSC7939 | Laser Diode Driver with Automatic Power Control |
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| VSC7939W | Laser Diode Driver with Automatic Power Control |
| VSC7940RP | SONET/SDH 3.125Gb/s Laser Diode Driver with Automatic Power Control |
相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| VSC7938R0 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Laser Diode Driver with Automatic Power Control |
| VSC7938W | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Laser Diode Driver with Automatic Power Control |
| VSC7939 | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Laser Diode Driver with Automatic Power Control |
| VSC7939RP | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Laser Diode Driver with Automatic Power Control |
| VSC7939W | 制造商:VITESSE 制造商全稱:Vitesse Semiconductor Corporation 功能描述:Laser Diode Driver with Automatic Power Control |
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