P2042A Datasheet, PDF (1/5 Pages) Alliance Semiconductor Corporation – LCD Panel EMI Reduction IC

P2042A
LCD Panel EMI Reduction IC
Product Description
The P2042A is a versatile spread spectrum frequency modulator
designed specifically for digital flat panel applications. The P2042A
reduces electromagnetic interference (EMI) at the clock source,
allowing system wide reduction of EMI of down stream clock and data
dependent signals. The P2042A 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.
The P2042A uses the most efficient and optimized modulation
profile approved by the FCC and is implemented in a proprietary all
digital method.
The P2042A modulates the output of a single 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’.
Applications
The P2042A is targeted towards digital flat panel applications for
notebook PCs, palm−size PCs, office automation equipments, and
LCD monitors.
Features
• FCC Approved Method of EMI Attenuation
• Provides up to 15 dB of EMI Suppression
• Generates a Low EMI Spread Spectrum Clock of the Input
Frequency
• Input/Output Frequency Range: 30 MHz to 110 MHz
• Optimized for 32.5 MHz, 54 MHz, 65 MHz and 108 MHz Pixel
Clock Frequencies
• Internal Loop Filter Minimizes External Components and Board
Space
• Eight Selectable High Spread Ranges up to ±2%
• SSON# Control Pin for Spread Spectrum Enable and Disable Options
• Low Cycle−to−Cycle Jitter
• 3.3 V ± 0.3 V Operating Range
• Low Power CMOS Design
• Supports Most Mobile Graphic Accelerator and LCD Timing
Controller Specifications
• Available in 8−pin TSSOP Package
• These are Pb−Free Devices
www.onsemi.com
TSSOP−8
T SUFFIX
CASE 948J
MARKING
DIAGRAM
8
AAM
YWW
AG
1
AAM = Specific Device Code
Y = Year
WW= Work Week
A = Assembly Location
G = Pb−Free Package
PIN CONFIGURATION
1
CLKIN
VDD
CP0
SR0
CP1
ModOUT
VSS
SSON#
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 4 of this data sheet.
© Semiconductor Components Industries, LLC, 2015
1
June, 2015 − Rev. 6
Publication Order Number:
P2042A/D