VSC7924 Datasheet, PDF (3/12 Pages) Vitesse Semiconductor Corporation – SONET/SDH 2.5Gb/s Laser Diode Driver

VITESSE
SEMICONDUCTOR CORPORATION
Preliminary Data Sheet
VSC7924
SONET/SDH 2.5Gb/s Laser Diode Driver
Table 5: Power Dissipation
Symbol
I_VSS
Parameter
Power Supply Current (V_SS)
P_D
Total Power Dissipation
P_DMAX Maximum Power Dissipation
Min Typ Max Units
Conditions
220
1120
1815
mA V_SS = -5.5V, I_MOD = I_BIAS = 0mA
mW
V_SS = -5.5V, I_MOD = I_BIAS = 0mA,
R_LOAD = 25Ω to GND
mW
V_SS = -5.5V, I_MOD = 60mA,
I_BIAS = 50mA, I_OUT = 0V
Table 6: Laser Driver DC Electrical Specifications
Symbol
I_BIAS
I_MOD
Parameter
Programmable Laser Bias Current
Programmable Modulation Current
Min Typ
2
2
V_IB
Laser Bias Control Voltage
V_IP
V_OCM
Laser Modulation Control Voltage
Output Voltage Compliance
GND
-2.2V
Max
50
60
V_SS +
2.1
V_SS +
2.1
Units
mA
mA
Conditions
V I_BIAS = 50mA
V I_MOD= 60mA
V V_SS = -5.2V
Table 7: Laser Driver AC Electrical Specifications
Symbol
Parameter
Min Typ
t_R, t_F
Output Rise and Fall Times
Max
100
Units
ps
Conditions
25Ω load, 20%-80%,
15mA < I_MOD < 60mA,
I_BIAS = 20mA
Table 8: Package Thermal Specifications
Symbol
Parameter
Min Typ Max Units
Conditions
θ_JCC
Thermal Resistance from junction-to-case
25
°C/W Ceramic Package
G52156-0, Rev 3.0
05/01/01
© VITESSE SEMICONDUCTOR CORPORATION • 741 Calle Plano • Camarillo, CA 93012
Tel: (800) VITESSE • FAX: [phone] • Email: [e-mail]
Internet: www.vitesse.com
Page 3