P2040A-08TR Alliance Semiconductor, P2040A-08TR Datasheet

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P2040A-08TR

Manufacturer Part Number
P2040A-08TR
Description
30 MHz to 110 MHz, LCD panel EMI reduction IC
Manufacturer
Alliance Semiconductor
Datasheet
October 2003
rev 1.0
Features
Product Description
The P2040A is a versatile spread spectrum frequency
modulator designed specifically for digital flat panel
applications. The P2040A reduces electromagnetic
interference (EMI) at the clock source, allowing system
wide reduction of EMI of down stream clock and data
dependent signals. The P2040A allows significant system
cost savings by reducing the number of circuit board
layers ferrite beads,
components that are traditionally required to pass EMI
regulations.
The P2040A uses the most efficient and optimized
modulation profile approved by the FCC and is
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 20dB of EMI suppression.
Generates a low EMI spread spectrum clock of the
input frequency.
Input frequency range: 30MHz to 110MHz.
Optimized for VGA, SVGA, and higher resolution
XGA LCD Panels.
Internal loop filter minimizes external components
and board space.
Six selectable high spread ranges up to ± 2%.
Two selectable modulation rates.
SSON# control pin for spread spectrum enable
and disable options.
Low cycle-to-cycle jitter.
Wide operating range.
16mA output drives.
TTL or CMOS compatible outputs.
Low power CMOS design.
Supports
specifications.
Products available for automotive temperature
range. (Refer Spread Spectrum Range Selection
Tables)
Available in 8-pin SOIC and TSSOP.
most
shielding and other passive
mobile
Notice: The information in this document is subject to change without notice.
graphic
LCD Panel EMI Reduction IC
accelerator
Alliance Semiconductor
implemented in a proprietary all digital method.
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 P2040A is targeted towards digital flat panel
applications for notebook PCs, palm-size PCs, office
automation equipments and LCD monitors.
The P2040A modulates the output of a single PLL in
P2040A

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P2040A-08TR Summary of contents

Page 1

... Notice: The information in this document is subject to change without notice. LCD Panel EMI Reduction IC implemented in a proprietary all digital method. The P2040A 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

... Notice: The information in this document is subject to change without notice. SR0 SR1 MRA SSON# VDD Modulation Phase Loop Detector Filter VSS 1 8 CLKIN VDD MRA 2 7 SR0 P2040A 6 3 ModOUT SR1 5 SSON# 4 VSS Description LCD Panel EMI Reduction IC P2040A DIV2 PLL Output VCO Divider ModOUT ...

Page 3

... Spreading Range ± 1.00 ± 1.50 ± 0.70 ± 1.00 ± 1.15 ± 2.00 ± 1.15 ± 1.75 LCD Panel EMI Reduction IC P2040A Modulation Rate (KHz) (FIN /40) * 34.72 KHz (FIN /40) * 34.72 KHz (FIN /40) * 34.72 KHz (FIN /40) * 34.72 KHz (FIN /40) * 20.83 KHz (FIN /40) * 20.83 KHz Reserved Reserved Modulation Rate (F /40) * 34.72 KHz IN (F /40 ...

Page 4

... The center frequency is the frequency of the external reference input on CLKIN, pin1). For example, P2040A is designed for high-resolution, flat panel applications and is able to support an XGA (1024 x 768) flat panel operating at 65MHz (FIN) clock speed. A spreading selection of MRA=0, SR1=1 and SR0=0 provides a percentage deviation of ± ...

Page 5

... EMI reduction ICs. The following illustration is an example of the simulation result. Please visit our website at www.alsc.com for information on how to obtain a free copy and a demonstration of the EMI-Lator simulation software. Notice: The information in this document is subject to change without notice. Simulation results From EMI-Lator® LCD Panel EMI Reduction IC P2040A ...

Page 6

... Notice: The information in this document is subject to change without notice. Parameter Min GND - 0.3 2.0 – – mA) – 3 mA) 2.5 OL – 7 2.7 – – Parameter LCD Panel EMI Reduction IC P2040A Rating Unit 0.5 to +7.0 V -65 to +125 ° °C -40 to +125 °C Typ Max Unit – 0.8 V – VDD + 0.3 V – ...

Page 7

... E 0.148 0.164 e 0.050 BSC H 0.224 0.248 L 0.012 0.028 θ 0° 8° Notice: The information in this document is subject to change without notice. 8-Pin SOIC θ Dimensions in millimeters Min Max 1.45 1.80 0.10 0.25 1.35 1.75 0.31 0.51 0.10 0.25 4.72 5.12 3.75 4.15 1.27 BSC 5.70 6.30 0.30 0.70 0° 8° LCD Panel EMI Reduction IC P2040A ...

Page 8

... E 0.169 0.177 e 0.026 BSC H 0.244 0.260 L 0.018 0.030 θ 0° 8° Notice: The information in this document is subject to change without notice. 8-Pin TSSOP θ A1 Dimensions in millimeters Min Max 1.10 0.05 0.15 0.80 1.05 0.19 0.30 0.09 0.20 2.90 3.10 4.30 4.50 0.65 BSC 6.20 6.60 0.45 0.75 0° 8° LCD Panel EMI Reduction IC P2040A ...

Page 9

... I2040A I2040A-08TT I2040A I2040A-08TR I2040A P2040A-08ST P2040A P2040A-08SR P2040A P2040A-08TT P2040A P2040A-08TR P2040A Part Numbering Guide X 2040 Flow Prefix Automotive temperature range (-40°C to 125° Industrial Temperature range (-40°C to 85° Commercial temperature range (0°C to 70°) 2 ...

Page 10

... Alliance against all claims arising from such use. Notice: The information in this document is subject to change without notice. Copyright © Alliance Semiconductor All Rights Reserved Preliminary Information Part Number: P2040A Document Version: v1.0 LCD Panel EMI Reduction IC P2040A ...

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