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

p2042ag-08tt

Manufacturer Part Number

p2042ag-08tt

Description

Lcd Panel Emi Reduction Ic

Manufacturer

PulseCore Semiconductor

Datasheet

1.P2042AG-08TT.pdf (9 pages)

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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

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

Related parts for p2042ag-08tt

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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