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83052AGILFT Datasheet(PDF) 11 Page - Integrated Device Technology

Part No. 83052AGILFT
Description  2 1 single-ended multiplexer
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Maker  IDT [Integrated Device Technology]
Homepage  http://www.idt.com
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83052AGILFT Datasheet(HTML) 11 Page - Integrated Device Technology

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ICS83052I REVISION B DECEMBER 8, 2011
11
©2011 Integrated Device Technology, Inc.
ICS83052I Data Sheet
2:1, SINGLE ENDED MULTIPLEXER
POWER CONSIDERATIONS
This section provides information on power dissipation and junction temperature for the ICS830521I.
Equations and example calculations are also provided.
1. Power Dissipation.
The total power dissipation for the ICS830521I is the sum of the core power plus the analog power plus the power
dissipated in the load(s).
The following is the power dissipation for V
DD
= 3.3V + 5% = 3.465V, which gives worst case results.
Core and LVDS Output Power Dissipation
Power (core)
MAX
= V
DD_MAX
* (I
DD
+ I
DDo
) = 3.4565V * (40mA + 5mA) = 155.93mW
Output Impedance R
OUT
Power Dissipation due to Loading 50
Ω to V
DD
/2
Output Current I
OUT = VDDO_MAX / [2 * (50Ω + ROUT)] = 3.465 / [2 * (50Ω + 15Ω)] = 26.7mA
Power Dissipation on the R
OUT per LVCMOS output
Power (R
OUT) = ROUT * (IOUT)
2
= 15
Ω * (26.7mA)2 = 10.7mW
Dynamic Power Dissipation at 250MHz
Power (250MHz) = C
PD * frequency * (VDD)
2
= 18pF * 250MHz * (3.465V)2 = 54.0mW
Total Power Dissipation
Total Power
= Power (core)
MAX + Power (R
OUT)
Total Power + Power (250MHz)
= 155.93mW + 10.7mW + 54.0mW
=220.6mW


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