VSC7991X 查看數據表（PDF） - Vitesse Semiconductor
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VSC7991X Datasheet PDF : 10 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
SDH/SONET 10.7Gb/s
Electroabsorption Modulator/Laser Diode Driver
Advance Product Information
VSC7991
AC Characteristics (Over recommended operating conditions)
Table 1: High Speed Inputs /Outputs
Symbol
IRL
ORL
Parameter
Input Return Loss, 50Ω System
Output Return Loss, 50Ω System
Min Typ Max Units
Conditions
−15
dB 50MHz to 10GHz
−12
dB 50MHz to 10GHz
Table 2: Laser Driver AC Electrical Specifications
Symbol
Parameter
Min Typ
tR tF
Jitter
Output Rise and Fall Times
Output Jitter
Overshoot/Undershoot
Duty-Cycle
−10
−25
Max
38
15
+10
+25
Units
ps
ps/p-p
%
%
Conditions
50Ω load, 20% to 80%, VMOD
= 3V
50Ω Load, VMOD = 3V
DCC in the range of VSS −
0.5V to VSS +2V
DC Characteristics (Over recommended operating conditions)
Table 3: Power Dissipation
Symbol
Parameter
IVSS
Power Supply Current (VSS)
PD
Total Power Dissipation
Min Typ Max Units
Conditions
300
330
mA
VSS = −6.8, RL = 50Ω to GND,
IMOD = 120mA, VBIAS = 0V
2040 2244
mW
VSS = −6.8, RL = 50Ω to GND
IMOD = 120mA, VBIAS = 0V
Table 4: Laser Driver DC Electrical Specifications
Symbol
VBIAS
VMOD
VOCM
IB, IBN
VIP
VIH
VIL
VSW(1)
DCC
Parameter
Programmable Output Offset Voltage
Modulation Voltage Amplitude
Output Voltage Compliance
Laser Bias Control Voltage
Laser Modulation Control Voltage
Input High Voltage
Input Low Voltage
Input Voltage Swing
Duty-Cycle Control
Min Typ Max Units
−0.8
0
V
1.5
3
V
4
V
−10
0
V
VSS
VSS +
0.7
V
−150
0
mV
−1.00 −0.60
V
450
1000 mVp-p
VSS −
0.5V
VSS+
2V
Conditions
NOTE: DIN and NDIN inputs need to be driven differentially. If single-ended drive is desired, it is necessary to add a DC bias to the unused pin.
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© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
G52321-0, Rev 2.3
02/26/01
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