P2040C-08SR Alliance Semiconductor, P2040C-08SR Datasheet

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P2040C-08SR

Manufacturer Part Number
P2040C-08SR
Description
P2040C-08SRLCD Panel EMI Reduction IC
Manufacturer
Alliance Semiconductor
Datasheet

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Part Number:
P2040C-08SR
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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-08SR 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 P2040C Modulation Rate ±0.4% (Fin/80) * 62.49KHz ±0.8% (Fin/80) * 62.49KHz ±0.3% (Fin/80) * 62.49KHz ±0.4% (Fin/80) * 62.49KHz ±1.1% (Fin/80) * 20.83KHz ±1.8% (Fin/80) * 20.83KHz ±0.9% (Fin/80) * 20.83KHz ± ...

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

... LH HL Notice: The information in this document is subject to change without notice. Parameter For SOIC Package For TSSOP Package VSS - 0.3 = 20mA 20mA) OL Parameter LCD Panel EMI Reduction IC P2040C Rating Unit -0.5 to +7.0 V -65 to +125 °C -20 to +85 °C 260 °C 156.5 °C/W 124 150 ° ...

Page 5

... Inches Millimeters Min Max Min 0.004 0.010 0.10 0.053 0.069 1.35 0.049 0.059 1.25 0.012 0.020 0.31 0.007 0.010 0.18 0.193 BSC 4.90 BSC 0.154 BSC 3.91 BSC 0.050 BSC 1.27 BSC 0.236 BSC 6.00 BSC 0.016 0.050 0.41 0° 8° 0° LCD Panel EMI Reduction IC P2040C C L Max 0.25 1.75 1.50 0.51 0.25 1.27 8° ...

Page 6

... Notice: The information in this document is subject to change without notice θ A1 Dimensions Inches Min Max Min 0.043 0.006 0.05 0.037 0.85 0.012 0.19 0.008 0.09 0.122 2.90 0.177 4.30 0.026 BSC 0.252 BSC 0.028 0.50 0° 8° 0° LCD Panel EMI Reduction IC P2040C Millimeters Max 1.10 0.15 0.95 0.30 0.20 3.10 4.50 0.65 BSC 6.40 BSC 0.70 8° ...

Page 7

... September 2005 rev 1.4 Ordering Information Part Number Marking P2040C-08ST P2040C P2040C-08SR P2040C P2040C-08TT P2040C P2040C-08TR P2040C I2040C-08ST I2040C I2040C-08SR I2040C I2040C-08TT I2040C I2040C-08TR I2040C X2040C-08ST X2040C X2040C-08SR X2040C X2040C-08TT X2040C X2040C-08TR X2040C P2040CF-08ST P2040CF P2040CF-08SR P2040CF P2040CF-08TT P2040CF P2040CF-08TR P2040CF I2040CF-08ST ...

Page 8

... SR - SOIC, T/R TT – TSSOP, TUBE TR - TSSOP, T/R Pin Count 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 P2040C ...

Page 9

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

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