8N3Q001EG-1033CDI IDT, 8N3Q001EG-1033CDI Datasheet - Page 15

• Manufacturer Part Number: 8N3Q001EG-1033CDI
• Description: Programmable Oscillators
• Manufacturer: IDT
• Series: IDT8Nr

Specifications of 8N3Q001EG-1033CDI

• Package / Case: 5 mm x 7 mm x 1.5 mm
• Frequency: 15.476 MHz to 866.67, 975 MHz to 1300 MHz
• Frequency Stability: +/- 50 PPM
• Supply Voltage: 3.63 V
• Load Capacitance: 10 pF
• Termination Style: SMD/SMT
• Output Format: LVPECL
• Minimum Operating Temperature: - 40 C
• Maximum Operating Temperature: + 85 C
• Dimensions: 7 mm W x 5 mm L x 1.5 mm H
• Product: VCXO
• Supply Voltage - Max: 3.465 V
• Supply Voltage - Min: 3.135 V
• Part # Aliases: IDT8N3Q001EG-1033CDI

IDT8N3Q001 REV G Data Sheet
3. Calculations and Equations.
The purpose of this section is to calculate the power dissipation for the LVPECL output pair.
LVPECL output driver circuit and termination are shown in Figure 4.
Figure 4. LVPECL Driver Circuit and Termination
T
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 – 0.8V)/50] * 0.8V = 19.2mW
Pd_L = [(V
[(2V – 1.5V)/50] * 1.5V = 15mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 34.2mW
IDT8N3Q001GCD REVISION A MARCH 6, 2012
o calculate worst case power dissipation into the load, use the following equations which assume a 50 load, and a termination voltage of
CC
•
•
– 2V.
For logic high, V
(V
For logic low, V
(V
OL_MAX
OH_MAX
CC_MAX
CC_MAX
– (V
– (V
– V
– V
OH_MAX
OL_MAX
CC_MAX
CC_MAX
OUT
OUT
Q1
= V
= V
) = 1.5V
) = 0.8V
– 2V))/R
V
– 2V))/R
CC
OL_MAX
OH_MAX
L
L
] * (V
= V
] * (V
= V
CC_MAX
CC_MAX
CC_MAX
CC_MAX
RL
50Ω
V
– 1.5V
CC
– V
V
– 0.8V
– V
OUT
- 2V
OL_MAX
OH_MAX
) = [(2V – (V
) = [(2V – (V
15
CC_MAX
CC_MAX
– V
– V
OL_MAX
OH_MAX
))/R
))/R
L
] * (V
L
] * (V
CC_MAX
CC_MAX
QUAD-FREQUENCY PROGRAMMABLE-XO
©2012 Integrated Device Technology, Inc.
– V
– V
OL_MAX
OH_MAX
) =
) =