8533AGI-31LF IDT, 8533AGI-31LF Datasheet - Page 13

• Manufacturer Part Number: 8533AGI-31LF
• Description: Clock Drivers & Distribution
• Manufacturer: IDT

Specifications of 8533AGI-31LF

• Product Category: Clock Drivers & Distribution
• Rohs: yes
• Part # Aliases: ICS8533AGI-31LF

3. Calculations and Equations.
The purpose of this section is to derive the power dissipated into the load.
LVPECL output driver circuit and termination are shown in Figure 6.
T
termination
voltage of V
Pd_H is power dissipation when the output drives high.
Pd_L is the power dissipation when the output drives low.
Pd_H = [(V
[(2V - 0.9V)/50 ] * 0.9V = 19.8mW
Pd_L = [(V
[(2V - 1.7V)/50 ] * 1.7V = 10.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30mW
8533AGI-01
o calculate worst case power dissipation into the load, use the following equations which assume a 50 load, and a
•
•
For logic high, V
(V
For logic low, V
(V
OL_MAX
OH_MAX
CC_MAX
CC_MAX
CC
- 2V.
– (V
– (V
- V
- V
OH_MAX
OL_MAX
CC_MAX
CC_MAX
OUT
OUT
) = 1.7V
) = 0.9V
- 2V))/R
- 2V))/R
= V
= V
OL_MAX
OH_MAX
L
L
] * (V
F
] * (V
IGURE
= V
= V
CC_MAX
CC_MAX
CC_MAX
CC_MAX
6. LVPECL D
- V
– 1.7V
- V
– 0.9V
OL_MAX
OH_MAX
) = [(2V - (V
) = [(2V - (V
D
RIVER
V
IFFERENTIAL
Q1
CC
13
C
CC_MAX
CC_MAX
IRCUIT AND
- V
- V
OL_MAX
OH_MAX
-
TO
T
RL
V
50
ERMINATION
)) /R
CC
-3.3V LVPECL F
)) /R
- 2V
V
L
OUT
] * (V
L
] * (V
CC_MAX
CC_MAX
- V
- V
OL_MAX
OH_MAX
ICS8533I-01
L
OW
) =
) =
ANOUT
S
REV. A DECEMBER 6, 2007
KEW
, 1-
B
UFFER
TO
-4