VSC7926KF(2001) 查看數據表（PDF） - Vitesse Semiconductor
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VSC7926KF Datasheet PDF : 10 Pages
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VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7926
SDH/SONET 2.5Gb/s Laser Diode Driver
Table 4: Recommended Operating Conditions
Symbol
Parameter
Min Typ Max Units
Conditions
GND
VSS
Tcl
TJ
Positive Voltage Rail
Negative Voltage Rail
Operational Temperature(1)
Junction Temperature
-
0
-
V
-5.5 -5.2 -4.9
V
-40
-
85(2)
°C Power dissipation = 1.25W
-
-
125
°C
NOTES: (1) Lower limit of specification is ambient temperature and upper limit is case temperature. (2) See “Calculation of the
Maximum Case Temperature” section in this data sheet for detailed maximum temperature calculations.
Table 5: Power Dissipation
Symbol
IVSS
Parameter
Power Supply Current (VSS)
PD
Total Power Dissipation
PDMAX
Maximum Power Dissipation
Min Typ Max Units
Conditions
-
-
220
mA VSS = -5.5, IMOD = IBIAS = 0mA
-
-
1210
mW
VSS = -5.5, IMOD = IBIAS = 0mA,
RLOAD = 25Ω to GND
-
-
1815
mW
VSS = -5.5, IMOD = 60mA,
IBIAS = 50mA, IOUT = 0V
Table 6: Laser Driver DC Electrical Specifications
Symbol
Parameter
Min Typ
IBIAS
IMOD
Programmable Laser Bias Current
2
-
Programmable Modulation Current
2
-
VIB
Laser Bias Control Voltage
-
-
VIP
VOCM
Laser Modulation Control Voltage
Output Voltage Compliance
-
-
GND
-2.5V
-
Max
50
60
VSS +
2.1
VSS +
2.1
Units
mA
mA
V
V
Conditions
IBIAS = 50mA
IMOD= 60mA
-
V VSS = -5.2V
Table 7: Laser Driver AC Electrical Specifications
Symbol
Parameter
Min Typ
tR tF
Output Rise and Fall Times
tSU
Setup Data to Clock Setup Time
tH
Hold Time
-
-
-
50
-
50
Max
100
-
-
Units
ps
ps
ps
Conditions
25Ω load, 20%-80%,
15mA < IMOD < 60 mA,
IBIAS = 40mA
Table 8: Package Thermal Specifications
Symbol
Parameter
Min Typ Max Units
Conditions
θJCC
Thermal Resistance from Junction-to-Case -
25
- °C/W Ceramic Package
G52188-0, Rev 3.0
04/05/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: (805) 987-5896 • Email: prodinfo@vitesse.com
Internet: www.vitesse.com
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