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ICS831724I Arkusz danych(PDF) 19 Page - Integrated Device Technology

Numer części ICS831724I
Szczegółowy opis  LVCMOS interface levels for all control inputs
PDF  24 Pages
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Producent  IDT [Integrated Device Technology]
Strona internetowa  http://www.idt.com
Logo IDT - Integrated Device Technology

ICS831724I Arkusz danych(HTML) 19 Page - Integrated Device Technology

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ICS831724AKI REVISION A MAY 16, 2013
19
©2013 Integrated Device Technology, Inc
ICS831724I Data Sheet
DIFFERENTIAL CLOCK DATA MULTIPLEXER
3. Calculations and Equations.
The purpose of this section is to calculate power dissipation on the IC per HCSL output pair.
HCSL output driver circuit and termination are shown in Figure 5.
Figure 5. HCSL Driver Circuit and Termination
HCSL is a current steering output which sources a maximum of 17mA of current per output. To calculate worst case on-chip power dissipation,
use the following equations which assume a 50
 load to ground.
The highest power dissipation occurs at VDD_MAX.
Power
= (VDD_MAX –VOUT)*IOUT,
since VOUT =IOUT *RL
Power
= (VDD_MAX –IOUT *RL)*IOUT
Power
= (3.6V – 17mA * 50
) * 17mA
Total Power Dissipation per output pair = 46.8mW
VDD
VOUT
RL
50
IC
IOUT = 17mA
RREF =
475
±1%



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