IDTICS853031AYLF IDT, Integrated Device Technology Inc, IDTICS853031AYLF Datasheet - Page 16

• Manufacturer Part Number: IDTICS853031AYLF
• Manufacturer: IDT, Integrated Device Technology Inc
• Type: Clock Driverr

Specifications of IDTICS853031AYLF

• Number Of Clock Inputs: 2
• Mode Of Operation: Differential
• Output Frequency: >1600MHz
• Output Logic Level: ECL/LVPECL
• Operating Supply Voltage (min): -2.375/2.375V
• Operating Supply Voltage (typ): -2.5/-3.3/3.3V
• Operating Supply Voltage (max): -3.465/3.465V
• Package Type: LQFP
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 32
• Lead Free Status / RoHS Status: Compliant

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 8.
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 – 0.935V)/50 ] * 0.935V = 19.92mW
Pd_L = [(V
[(2V – 1.67V)/50 ] * 1.67V = 11.2mW
Total Power Dissipation per output pair = Pd_H + Pd_L = 30.94mW
IDT
o calculate worst case power dissipation into the load, use the following equations which assume a 50
ICS853031
LOW SKEW, 1-TO-9, DIFFERENTIAL-TO-2.5, 3.3V LVPECL/ECL FANOUT BUFFER
™
•
•
/ ICS
For logic high, V
(V
For logic low, V
(V
™
OL_MAX
1-TO-9, 2.5V, 3.3V LVPECL/ECL FANOUT BUFFER
CCO_MAX
CCO_MAX
OH_MAX
– (V
– (V
– V
– V
CCO_MAX
CCO_MAX
OH_MAX
OL_MAX
CCO
OUT
) = 1.67V
) = 0.935V
OUT
– 2V))/R
– 2V))/R
= V
– 2V.
= V
OL_MAX
OH_MAX
L
L
] * (V
= V
] * (V
= V
CCO_MAX
CCO_MAX
CCO_MAX
CCO_MAX
F
IGURE
– 1.67V
– V
– 0.935V
– V
8. LVPECL D
OL_MAX
OH_MAX
) = [(2V – (V
) = [(2V – (V
Q1
VCCO
RIVER
CCO_MAX
CCO_MAX
16
C
– V
– V
IRCUIT AND
OL_MAX
OH_MAX
)) /R
)) /R
RL
50
L
T
VCCO - 2V
L
] * (V
] * (V
ERMINATION
VOUT
CCO_MAX
CCO_MAX
– V
– V
OL_MAX
OH_MAX
ICS853031AY REV. C AUGUST 12, 2008
) =
) =
load, and a