P2040C Alliance Semiconductor, P2040C Datasheet

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P2040C

Manufacturer Part Number
P2040C
Description
LCD Panel EMI Reduction IC
Manufacturer
Alliance Semiconductor
Datasheet

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Part Number:
P2040C
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P2040C-08SR
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www.DataSheet4U.com
September 2005
rev 1.4
Features
Product Description
The P2040C is a selectable spread spectrum frequency
modulator designed specifically for digital flat panel
applications.
interference (EMI) at the clock source which provides
Block Diagram
CLKIN
2575 Augustine Drive • Santa Clara, CA • Tel: 408.855.4900 • Fax: 408.855.4999 • www.alsc.com
FCC approved method of EMI attenuation.
Provides up to 15dB of EMI suppression
Generates a low EMI spread spectrum clock of the
50MHz to 170MHz input frequency range
Optimized for 54MHz, 65MHz, 81MHz, 140MHz,
Internal loop filter minimizes external components
8 selectable spread ranges, up to ± 2.2%
SSON# control pin for spread spectrum enable and
2 selectable modulation rates
Low Cycle-to-cycle jitter
3.3V Operating Voltage
Ultra low power CMOS design
Supports most mobile graphic accelerator and LCD
Available in 8 pin SOIC and TSSOP Packages
input frequency
and 162MHz pixel clock frequencies
and board space
disable options
timing controller specifications
The
P2040C
reduces
Notice: The information in this document is subject to change without notice.
Frequency
Feedback
Divider
Divider
electromagnetic
LCD Panel EMI Reduction IC
Alliance Semiconductor
SR0 SR1 MRA
Modulation
Detector
Phase
SSON#
system wide reduction of EMI of all clock dependent
signals. The P2040C allows significant system cost
savings by reducing the number of circuit board layers and
shielding that are traditionally required to pass EMI
regulations.
The P2040C uses the most efficient and optimized
modulation profile approved by the FCC and
implemented in a proprietary all-digital method. The
P2040C 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 result in a 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 P2040C is targeted towards digital flat panel
applications for Notebook PCs, Palm-size PCs, Office
Automation Equipments and LCD Monitors.
Loop
Filter
VDD
VSS
VCO
PLL
Output
Divider
P2040C
ModOUT
is

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P2040C Summary of contents

Page 1

... The P2040C uses the most efficient and optimized modulation profile approved by the FCC and implemented in a proprietary all-digital method. The P2040C 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 ...

Page 2

... LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. P2040C 8 8 VDD VDD 7 7 SR0 ModOUT SSON# Description Modulation Rate 162MHz ± ...

Page 3

... The center frequency is the frequency of the external reference input on CLKIN, Pin 1). Example: P2040C is designed for high resolution flat panel applications and is able to support panel frequencies from 50MHz to 170MHz. For a 65MHz pixel clock frequency, a spreading selection of MRA=0, SR1=1 and SR0 =1 provides a percentage deviation of ± ...

Page 4

... Parameter Input frequency Output rise time (measured at 0.8V to 2.0V) Output fall time (measured at 2.0V to 0.8V) Jitter (cycle to cycle) Output duty cycle LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. P2040C Rating Unit -0.5 to +7.0 V -65 to +125 °C -20 to +85 °C 260 ° ...

Page 5

... B 0.012 0.020 C 0.007 0.010 D 0.193 BSC E 0.154 BSC e 0.050 BSC H 0.236 BSC L 0.016 0.050 θ 0° 8° LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. P2040C C L Millimeters Min Max 0.10 0.25 1.35 1.75 1.25 1.50 0.31 0.51 0.18 0.25 4.90 BSC 3.91 BSC 1.27 BSC 6.00 BSC 0.41 1.27 0° ...

Page 6

... BSC 0.252 BSC 0.020 0.028 0° 8° LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. P2040C Millimeters Min Max 1.10 0.05 0.15 0.85 0.95 0.19 0.30 0.09 0.20 2.90 3.10 4.30 4.50 0.65 BSC 6.40 BSC ...

Page 7

... SOIC, TAPE & REEL X2040C 8-Pin TSSOP, TUBE X2040C 8-Pin TSSOP, TAPE & REEL P2040CF 8-Pin SOIC, TUBE, Pb Free P2040CF 8-Pin SOIC, TAPE & REEL, Pb Free P2040CF 8-Pin TSSOP, TUBE, Pb Free P2040CF 8-Pin TSSOP, TAPE & REEL, Pb Free I2040CF 8-Pin SOIC, TUBE, Pb Free I2040CF 8-Pin SOIC, TAPE & ...

Page 8

... FREE and RoHS COMPLIANT PART G = Green DEVICE NUMBER Flow Commercial Temperature Range (0°C to 70° Industrial Temperature Range (-40°C to 85° Automotive Temperature Range (-40°C to 125°C) LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. P2040C ...

Page 9

... Alliance against all claims arising from such use. LCD Panel EMI Reduction IC Notice: The information in this document is subject to change without notice. P2040C Copyright © Alliance Semiconductor All Rights Reserved Preliminary Information Part Number: P2040C Document Version: v1 ...

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