ICS843101AGI-100LFT IDT, Integrated Device Technology Inc, ICS843101AGI-100LFT Datasheet - Page 15

• Manufacturer Part Number: ICS843101AGI-100LFT
• Description: IC SYNTHESIZER 100MHZ 16-TSSOP
• Manufacturer: IDT, Integrated Device Technology Inc
• Series: HiPerClockS™, FemtoClock®r
• Type: Frequency Synthesizerr

Specifications of ICS843101AGI-100LFT

• Pll: Yes
• Input: LVCMOS, LVTTL, Crystal
• Output: LVPECL
• Number Of Circuits: 1
• Ratio - Input:output: 2:1
• Differential - Input:output: No/Yes
• Frequency - Max: 100MHz
• Divider/multiplier: Yes/No
• Voltage - Supply: 2.375 V ~ 3.465 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-TSSOP
• Frequency-max: 100MHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 843101AGI-100LFT

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 7.
T
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
IDT
o calculate worst case power dissipation into the load, use the following equations which assume a 50
ICS843101I-100
FEMTOCLOCKS™ CRYSTAL-TO-LVPECL 100MHZ FREQUENCY MARGINING SYNTHESIZER
™
•
•
/ ICS
For logic high, V
(V
For logic low, V
(V
™
OL_MAX
LVPECL FREQUENCY MARGINING SYNTHESIZER
CCO_MAX
CCO_MAX
OH_MAX
CCO
- 2V.
– (V
– (V
- V
- V
CCO_MAX
OH_MAX
OL_MAX
CCO_MAX
) = 1.7V
) = 0.9V
OUT
- 2V))/R
OUT
- 2V))/R
= V
= V
OL_MAX
OH_MAX
L
L
] * (V
] * (V
= V
= V
CCO_MAX
CCO_MAX
CCO_MAX
CCO_MAX
F
IGURE
- V
– 1.7V
- V
– 0.9V
OL_MAX
OH_MAX
7. LVPECL D
) = [(2V - (V
) = [(2V - (V
CCO_MAX
RIVER
CCO_MAX
V
Q1
CCO
15
- V
C
- V
IRCUIT AND
OL_MAX
OH_MAX
)) /R
)) /R
L
] * (V
L
] * (V
T
R L
V
ERMINATION
50
CCO
CCO_MAX
CCO_MAX
V
- 2V
OUT
- V
- V
OL_MAX
OH_MAX
ICS843101AGI-100 REV. A APRIL 26, 2007
) =
) =
load, and a termination