P3I2005A Datasheet, PDF (1/6 Pages) ON Semiconductor – General Purpose Peak EMI Reduction IC

P3I2005A
General Purpose Peak EMI
Reduction IC
Product Description
P3I2005A is a versatile, 3.3 V / 5 V, 1x spread spectrum frequency
modulator designed to reduce electromagnetic interference (EMI) at
the clock source, allowing system wide reduction of EMI of down
stream clock and data dependent signals. The device allows significant
system cost savings by reducing the number of circuit board layers
ferrite beads, shielding and other passive components that are
traditionally required to pass EMI regulations.
P3I2005A modulates the output of a PLL in order to “spread” the
bandwidth of a synthesized clock, and more importantly, decreases the
peak amplitudes of its harmonics. This results in significantly lower
system EMI compared to the typical narrow band signal produced by
oscillators and most frequency generators. Lowering EMI by
increasing a signal’s bandwidth is called ‘spread spectrum clock
generation’.
P3I2005A accepts an input from an external reference clock and
locks to a 1x modulated clock output. Two logic pins S0 and D_C
enable selecting one of the 4 different frequency deviations. Refer
Deviation Selection table. Frequency Range Selection pin enables
operation in one of the two frequency ranges. P3I2005A operates over
a supply voltage range of 5 V / 3.3 V. P3I2005A is available in 8 Pin
SOIC Package.
Features
• 1x, LVCMOS Peak EMI Reduction
• Input Clock Frequency : 10 MHz − 100 MHz
• Output Clock Frequency : 10 MHz − 100 MHz
• Four different Frequency Deviation selection
• Frequency range Selection
• Supply voltage: 5 V $ 0.5 V
3.3 V $ 0.3 V
• 8 Pin SOIC Package
• These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS
Compliant
Application
• P3I2005A is targeted for use in a broad range of notebook and
desktop PCs and consumer electronic applications.
http://onsemi.com
8
1
SOIC−8
CASE 751
MARKING
DIAGRAM
8
AFG
ALYWX
G
1
AFG
A
L
Y
W
G
= Specific Device Code
= Assembly Location
= Wafer Lot
= Year
= Work Week
= Pb−Free Package
PIN CONFIGURATION
CLKIN/XIN 1
XOUT 2
D_C ₃
GND 4
P3I2005A
8 VDD
7 ModOUT
6 FRS
5 S0
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 5 of this data sheet.
© Semiconductor Components Industries, LLC, 2010
1
June, 2010 − Rev. 1
Publication Order Number:
P3I2005A/D