p2042ag-08tt PulseCore Semiconductor, p2042ag-08tt Datasheet

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p2042ag-08tt

Manufacturer Part Number
p2042ag-08tt
Description
Lcd Panel Emi Reduction Ic
Manufacturer
PulseCore Semiconductor
Datasheet
CLKIN
August 2007
rev 1.5
Features
Product Description
The P2042A is a versatile spread spectrum frequency
modulator designed specifically for digital flat panel
applications.
Block Diagram
1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018
FCC approved method of EMI attenuation.
Provides up to 15dB of EMI suppression.
Generates a low EMI spread spectrum clock of
the input frequency.
Input frequency range: 30MHz to 110MHz.
Optimized for 32.5MHz, 54MHz, 65MHz and
108MHz pixel clock frequencies.
Internal loop filter minimizes external components
and board space.
Eight selectable high spread ranges up to ±
1.9%.
SSON# control pin for spread spectrum enable
and disable options.
Low cycle-to-cycle jitter.
3.3V ± 0.3V operating range.
Low power CMOS design.
Supports most mobile graphic accelerator and
LCD timing controller specifications.
Available in 8-pin SOIC and TSSOP Packages.
The
P2042A
reduces
Notice: The information in this document is subject to change without notice.
Frequency
Feedback
Divider
Divider
PulseCore Semiconductor Corporation
electromagnetic
LCD Panel EMI Reduction IC
www.pulsecoresemi.com
SR0 CP1 CP0
Modulation
Detector
Phase
SSON#
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,
components that are traditionally required to pass EMI
regulations.
The P2042A uses the most efficient and optimized
modulation profile approved by the FCC and
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 P2042A is targeted towards digital flat panel
applications for notebook PCs, palm-size PCs, office
automation equipments and LCD monitors.
The P2042A modulates the output of a single PLL in
Loop
Filter
VDD
VSS
VCO
PLL
shielding and other passive
Output
Divider
P2042A
ModOUT
is

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p2042ag-08tt Summary of contents

Page 1

... The P2042A is targeted towards digital flat panel applications for notebook PCs, palm-size PCs, office automation equipments and LCD monitors. electromagnetic SSON# SR0 CP1 CP0 Modulation Phase Loop Detector Filter PulseCore Semiconductor Corporation www.pulsecoresemi.com P2042A shielding and other passive is VDD PLL Output VCO Divider ModOUT ...

Page 2

August 2007 rev 1.5 Pin Configuration Pin Description Pin Pin# Type Name 1 CLKIN I External reference frequency input. Connect to externally generated reference signal. Digital logic input used to select charge pump current. This pin has an internal pull-up ...

Page 3

August 2007 rev 1.5 Spread Spectrum Selection The Modulation Selection Table defines the possible spread spectrum options. The optimal setting should minimize system EMI to the fullest without affecting system performance. The spreading is described as a percentage deviation of ...

Page 4

August 2007 rev 1.5 Absolute Maximum Ratings Symbol VDD, V Voltage on any pin with respect to Ground IN T Storage temperature STG T Operating temperature A T Max. Soldering Temperature (10 sec Junction Temperature J T Static ...

Page 5

August 2007 rev 1.5 DC Electrical Characteristics Symbol Parameter V Input low voltage IL V Input high voltage IH Input low current I IL (pull-up resistor on inputs CP0, CP1 and SR0) I Input high current (pull-down resistor on input ...

Page 6

August 2007 rev 1.5 Package Information Symbol θ Notice: The information in this document is subject to change without notice. 8-lead SOIC Package ...

Page 7

August 2007 rev 1 Symbol A A1 0.002 A2 0.033 B 0.008 c 0.004 D 0.114 E 0.169 0.020 θ Notice: The information in this document is subject to change without notice. 8-lead TSSOP ...

Page 8

... August 2007 rev 1.5 Ordering Information Part Number Marking P2042AF-08ST P2042AF P2042AF-08SR P2042AF P2042AF-08TT P2042AF P2042AF-08TR P2042AF P2042AG-08ST P2042AG P2042AG-08SR P2042AG P2042AG-08TT P2042AG P2042AG-08TR P2042AG I2042AF-08ST I2042AF I2042AF-08SR I2042AF I2042AF-08TT I2042AF I2042AF-08TR I2042AF I2042AG-08ST I2042AG I2042AG-08SR I2042AG I2042AG-08TT I2042AG I2042AG-08TR I2042AG Device Ordering Information ...

Page 9

... Copyright 2006 PulseCore Semiconductor Corporation. All rights reserved. Our logo and name are trademarks or registered trademarks of PulseCore Semiconductor. All other brand and product names may be the trademarks of their respective companies. PulseCore reserves the right to make changes to this document and its products at any time without notice. ...

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