X2040AF-08-ST [PULSECORE]

LCD Panel EMI Reduction IC; 液晶面板降低EMI IC


型号：	X2040AF-08-ST
厂家：	PulseCore Semiconductor
描述：	LCD Panel EMI Reduction IC 液晶面板降低EMI IC CD
文件：	总9页 (文件大小：351K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

November 2006

rev 1.3

P2040A

LCD Panel EMI Reduction IC

Features

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

•

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 100MHz.

3.3v Operating Voltage

Optimized for VGA, SVGA, and higher

resolution XGA LCD Panels.

layers ferrite beads,

components that are traditionally required to pass EMI

regulations.

shielding and other passive

The P2040A uses the most efficient and optimized

modulation profile approved by the FCC and is

implemented in a proprietary all digital method.

•

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.

Low power CMOS design.

Supports most mobile graphic accelerator

specifications.

Products available for automotive temperature

range. (Refer Spread Spectrum Range

Selection Tables)

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. 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

Available in 8-pin SOIC and TSSOP Packages.

The P2040A is targeted towards digital flat panel

applications for notebook PCs, palm-size PCs, office

automation equipments and LCD monitors.

Product Description

The P2040A is a versatile spread spectrum frequency

VDD

SSON#

SR0 SR1 MRA

Block Diagram

PLL

Modulation

CLKIN

Frequency

Divider

Output

Divider

Phase

Loop

Filter

VCO

Detector

Feedback

Divider

ModOUT

VSS

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200, Campbell, CA 95008 • Tel: 408-879-9077 • Fax: 408-879-9018

www.pulsecoresemi.com

Notice: The information in this document is subject to change without notice.

November 2006

rev 1.3

P2040A

Pin Configuration

CLKIN

MRA

VDD

SR0

P2040A

ModOUT

SSON#

SR1

VSS

Pin Description

Pin#

Type

Description

Name

CLKIN

MRA

SR1

External reference frequency input. Connect to externally generated reference signal.

Digital logic input used to select modulation rate. This pin has an internal pull-up resistor.

Digital logic input used to select Spreading Range. This pin has an internal pull-up resistor.

Ground to entire chip. Connect to system ground.

VSS

Digital logic input used to enable Spread Spectrum function (Active LOW). Spread Spectrum

SSON#

function enabled when LOW, disabled when HIGH. This pin has an internal pull-low resistor.

ModOUT

SR0

Spread spectrum clock output.

Digital logic input used to select Spreading Range. This pin has an internal pull-up resistor.

Power supply for the entire chip (3.3V)

VDD

Modulation Selection (Commercial)

MRA

SR1

SR0

Spreading Range

± 1.125

Modulation Rate (KHz)

(FIN /40) * 34.72KHz

(FIN /40) * 20.83KHz

Reserved

± 1.75

± 0.75

± 1.25

± 2.00

Reserved

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Notice: The information in this document is subject to change without notice.

November 2006

rev 1.3

P2040A

Spread Range Selection at 50MHz (Automotive)

MRA

SR1

SR0

Spreading Range

± 1.25

Modulation Rate

(F_IN/40) * 34.72KHz

(F_IN/40) * 20.83KHz

± 2.00

± 1.00

± 1.50

± 1.25

± 2.00

± 1.25

± 2.00

Spread Range Selection at 70MHz (Automotive)

MRA

SR1

SR0

Spreading Range

± 1.00

Modulation Rate

(F_IN/40) * 34.72KHz

(F_IN/40) * 20.83KHz

± 1.50

± 0.70

± 1.00

± 1.15

± 2.00

± 1.15

± 1.75

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Notice: The information in this document is subject to change without notice.

November 2006

P2040A

rev 1.3

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 the center

frequency. (Note: 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 (F_IN) clock speed. A spreading selection of MRA=0, SR1=1 and SR0=0 provides a percentage

deviation of ±0.75% from F_IN. This results in the frequency on ModOUT being swept from 64.51MHz to 65.49MHz at a

modulation rate of 56.24KHz. Refer Modulation Selection Table. The example in the following illustration is a common EMI

reduction method for a notebook LCD panel and has already been implemented by most of the leading OEM and mobile

graphic accelerator manufacturers.

Application Schematic for Mobile LCD Graphics Controllers

+3.3V

Modulated 65MHz signal with

65MHz from graphics accelerator

±0.75 deviation and modulation

VDD

SR0

CLKIN

rate of 56.24KHz. This signal is

connected back to the spread

spectrum input pin (SSIN) of the

graphics accelerator.

MRA

SR1

VSS

0.1µF

ModOUT

SSON#

P2040A

Digital control for the SS enable

or disable

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Notice: The information in this document is subject to change without notice.

November 2006

P2040A

rev 1.3

Absolute Maximum Ratings

Symbol

Parameter

Voltage on any pin with respect to Ground

Rating

-0.5 to +4.6

-65 to +125

-40 to +125

260

Unit

°C

VDD, V_IN

T_STG

T_A

Storage temperature

Operating temperature

T_s

T_J

Max. Soldering Temperature (10 sec)

Junction Temperature

150

°C

T_DV

Static Discharge Voltage (As per JEDEC STD22- A114-B)

Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect

device reliability.

DC Electrical Characteristics

(Test condition: All parameters are measured at room temperature (+25°C) unless otherwise stated)

Symbol

V_IL

Parameter

Min

VSS - 0.3

2.0

Typ

Max

0.8

VDD + 0.3

Unit

Input low voltage

Input high voltage

Input low current

V_IH

I_IL

-35

µA

(pull-up resistor on inputs SR0, SR1 and MRA)

I_IH

V_OL

V_OH

I_DD

I_CC

VDD

t_ON

Input high current (pull-down resistor on input SSON#)

0.4

µA

Ω

Output low voltage (VDD = 3.3V, I_OL= 20mA)

Output high voltage (VDD = 3.3V, I_OH= 20mA)

Static supply current standby mode

Dynamic supply current (3.3V and 10pF loading)

Operating voltage

2.5

2.7

0.6

3.3

0.18

3.7

Power-up time (first locked cycle after power up)

Clock output impedance

Z_OUT

AC Electrical Characteristics

Symbol

Parameter

Min

Typ

Max Unit

f_IN

f_OUT

t_LH*

t_HL*

t_JC

Input frequency

0.7

0.6

100

1.1

1.0

360

MHz

Output 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)

0.9

0.8

t_D

Output duty cycle

*t_LHand t_HLare measured into a capacitive load of 15pF

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Notice: The information in this document is subject to change without notice.

November 2006

rev 1.3

P2040A

Package Information

8-lead (150-mil) SOIC Package

Dimensions

Symbol

Inches

Millimeters

Min

Max

0.010

0.069

0.059

0.020

0.010

Min

0.10

1.35

1.25

0.31

0.18

Max

0.25

1.75

1.50

0.51

0.25

0.004

0.053

0.049

0.012

0.007

0.193 BSC

0.154 BSC

0.050 BSC

0.236 BSC

4.90 BSC

3.91 BSC

1.27 BSC

6.00 BSC

0.016

0°

0.050

8°

0.41

0°

1.27

8°

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Notice: The information in this document is subject to change without notice.

November 2006

rev 1.3

P2040A

8-lead TSSOP (4.40-MM Body)

Dimensions

Symbol

Inches

Millimeters

Min

Max

Min

Max

0.043

0.006

0.037

0.012

0.008

0.122

0.177

1.10

0.002

0.033

0.008

0.004

0.114

0.169

0.05

0.85

0.19

0.09

2.90

4.30

0.15

0.95

0.30

0.20

3.10

4.50

0.026 BSC

0.252 BSC

0.65 BSC

6.40 BSC

0.020

0°

0.028

8°

0.50

0°

0.70

8°

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Notice: The information in this document is subject to change without notice.

November 2006

P2040A

rev 1.3

Ordering Information

Part number

P2040AF-08-ST

P2040AF-08-SR

P2040AF-08-TT

P2040AF-08-TR

P2040AG-08-ST

P2040AG-08-SR

P2040AG-08-TT

P2040AG-08-TR

I2040AF-08-ST

I2040AF-08-SR

I2040AF-08-TT

I2040AF-08-TR

I2040AG-08-ST

I2040AG-08-SR

I2040AG-08-TT

I2040AG-08-TR

X2040AF-08-ST

X2040AF-08-SR

X2040AF-08-TT

X2040AF-08-TR

X2040AG-08-ST

X2040AG-08-SR

X2040AG-08-TT

X2040AG-08-TR

Marking

P2040AF

Package Type

8-Pin SOIC, Tube, Pb Free

8-Pin SOIC, Tape and Reel, Pb Free

8-Pin TSSOP, Tube, Pb Free

8-Pin TSSOP, Tape and Reel, Pb Free

8-Pin SOIC, Tube, Green

8-Pin SOIC, Tape and Reel, Green

8-Pin TSSOP, Tube, Green

8-Pin TSSOP, Tape and Reel, Green

8-Pin SOIC, Tube, Pb Free

8-Pin SOIC, Tape and Reel, Pb Free

8-Pin TSSOP, Tube, Pb Free

8-Pin TSSOP, Tape and Reel, Pb Free

8-Pin SOIC, Tube, Green

8-Pin SOIC, Tape and Reel, Green

8-Pin TSSOP, Tube, Green

8-Pin TSSOP, Tape and Reel, Green

8-Pin SOIC, Tube, Pb Free

8-Pin SOIC, Tape and Reel, Pb Free

8-Pin TSSOP, Tube, Pb Free

8-Pin TSSOP, Tape and Reel, Pb Free

8-Pin SOIC, Tube, Green

Temperature

Commercial

Industrial

Automotive

P2040AF

P2040AG

I2040AF

I2040AG

I2040AF

I2040AG

8-Pin SOIC, Tape and Reel, Green

8-Pin TSSOP, Tube, Green

8-Pin TSSOP, Tape and Reel, Green

Device Ordering Information

P 2 0 4 0 A F - 0 8 S T

SR - SOIC, T/R

TT – TSSOP, TUBE

TR - TSSOP, T/R

ST – SOIC, TUBE

Pin Count

F = LEAD FREE AND RoHS COMPLIANT PART

G = GREEN PACKAGE, LEAD FREE, and RoHS

Deviation (%) and Spread option Identifier

DEVICE NUMBER

P = Commercial Temperature Range (0°C to 70°C)

I = Industrial Temperature Range (-40°C to 85°C)

X=Automotive Temperature Range (-40 to125°C)

Licensed under U.S Patent Nos 5,488,627 and 5,631,921

LCD Panel EMI Reduction IC

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Notice: The information in this document is subject to change without notice.

November 2006

rev 1.3

P2040A

PulseCore Semiconductor Corporation

1715 S. Bascom Ave Suite 200

Campbell, CA 95008

Preliminary Information

Tel: 408-879-9077

Part Number: P2040A

Fax: 408-879-9018

Document Version: v1.3

www.pulsecoresemi.com

Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003

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. PulseCore assumes no responsibility for any errors that may appear in this document. The data contained herein

represents PulseCore’s best data and/or estimates at the time of issuance. PulseCore reserves the right to change or

correct this data at any time, without notice. If the product described herein is under development, significant changes to

these specifications are possible. The information in this product data sheet is intended to be general descriptive information

for potential customers and users, and is not intended to operate as, or provide, any guarantee or warrantee to any user or

customer. PulseCore does not assume any responsibility or liability arising out of the application or use of any product

described herein, and disclaims any express or implied warranties related to the sale and/or use of PulseCore products

including liability or warranties related to fitness for a particular purpose, merchantability, or infringement of any intellectual

property rights, except as express agreed to in PulseCore’s Terms and Conditions of Sale (which are available from

PulseCore). All sales of PulseCore products are made exclusively according to PulseCore’s Terms and Conditions of Sale.

The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights,

trademarks, or any other intellectual property rights of PulseCore or third parties. PulseCore does not authorize its products

for use as critical components in life-supporting systems where a malfunction or failure may reasonably be expected to

result in significant injury to the user, and the inclusion of PulseCore products in such life-supporting systems implies that

the manufacturer assumes all risk of such use and agrees to indemnify PulseCore against all claims arising from such use.

LCD Panel EMI Reduction IC

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Notice: The information in this document is subject to change without notice.

X2040AF-08-ST [PULSECORE]

相关型号：

X2040AF-08-TR

X2040AF-08-TT

X2040AG-08-SR

X2040AG-08-ST

X2040AG-08-TR

X2040AG-08-TT

X2040B1B1-S

X2040B1N1-S

X2040C-08SR

X2040C-08ST

X2040C-08TR

X2040C-08TT