PulseCore I2040BF-08-ST Lcd panel emi reduction ic Datasheet

P2040B
November 2006
rev 0.2
LCD Panel EMI Reduction IC
Features
reducing the number of circuit board layers and shielding
•
Provides up to 15dB of EMI suppression
•
FCC approved method of EMI attenuation
•
that are traditionally required to pass EMI regulations.
Generates a low EMI spread spectrum clock of the
The P2040B uses the most efficient and optimized
input frequency
modulation
•
30MHz to 100MHz input frequency range
implemented in a proprietary all digital method.
•
Optimized for 32.5MHz, 54MHz, 65MHz, 81MHz,
profile
approved
by
the
FCC
and
is
pixel clock frequencies
The P2040B modulates the output of a single PLL in order
Internal loop filter minimizes external components
to “spread” the bandwidth of a synthesized clock and, more
and board space
importantly,
•
8 selectable spread ranges, up to +/- 2.0%
harmonics.
•
SSON# control pin for spread spectrum enable
•
decreases
the
peak
amplitudes
of
its
and disable options
This results in significantly lower system EMI compared to
•
Low cycle-to-cycle jitter
the typical narrow band signal produced by oscillators and
•
3.3V operating voltage
most frequency generators. Lowering EMI by increasing a
•
Ultra low power CMOS design
signal’s bandwidth is called “spread spectrum clock
•
Supports most mobile graphic accelerator and
generation”.
LCD timing controller specifications
•
Available in 8 pin SOIC and TSSOP Packages.
Product Description
The P2040B is targeted towards digital flat panel
The P2040B is a selectable spread spectrum frequency
modulator designed specifically for digital flat panel
applications.
The
P2040B
Applications
reduces
applications for Notebook PCs, Palm-size PCs, Office
Automation Equipments and LCD Monitors.
electromagnetic
interference (EMI) at the clock source which provides
system wide reduction of EMI of all clock dependent
signals.
The P2040B allows significant system cost savings by
SR0 CP1 CP0 SSON#
Block Diagram
VDD
PLL
Modulation
CLKIN
Frequency
Divider
Feedback
Divider
Phase
Detector
Loop
Filter
VCO
Output
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.
P2040B
November 2006
rev 0.2
Pin Configuration
8
VDD
7
SR0
3
6
ModOUT
4
5
SSON#
CLKIN
1
CP0
2
CP1
VSS
P2040B
Deviations and Modulation Rate Table
CP0
CP1
SR0
0
0
0
Spreading Range (+/- %)
Modulation Rate
32.5MHz
54MHz
65MHz
81MHz
0
0.56
1.05
1.00
0.98
(Fin/40) * 62.49KHz
0
1
1.94
1.68
1.56
1.48
(Fin/40) * 62.49KHz
0
1
0
1.36
1.05
1.00
0.92
(Fin/40) * 62.49KHz
0
1
1
1.92
1.68
1.56
1.48
(Fin/40) * 62.49KHz
1
0
0
1.24
0.81
0.66
0.40
(Fin/40) * 62.49KHz
1
0
1
1.91
1.29
1.02
0.74
(Fin/40) * 62.49KHz
1
1
0
0.91
0.45
0.34
0.05
(Fin/40) * 62.49KHz
1
1
1
1.47
0.71
0.54
0.36
(Fin/40) * 62.49KHz
Pin Description
Pin#
Pin Name
Type
Description
1
CLKIN
I
2
CP0
I
3
CP1
I
4
VSS
P
Ground Connection. Connect to system ground.
External reference frequency input. Connect to externally generated
reference signal.
Digital logic input used to select charge pump current (see Table 1). This
pin has a 100K Ohm internal pull-up resistor.
Digital logic input used to select charge pump current (see Table 1). This
pin has a 100K Ohm internal pull-up resistor.
5
SSON#
I
Digital logic input used to enable Spread Spectrum function (Active LOW).
Spread Spectrum function enable when LOW. This pin has a 100K Ohm
internal pull-low resistor.
6
ModOUT
O
Spectrum Clock output
7
SR0
I
Digital logic input used to select Spreading Range (see Table 1) This pin
has a 100K Ohm internal pull-up resistor.
8
VDD
P
Connect to +3.3V
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
2 of 8
P2040B
November 2006
rev 0.2
Spread Spectrum Selection
Table 1 illustrates 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, Pin 1).
Example: P2040B is designed for high resolution flat panel applications and is able to support panel frequencies from
30MHz to 100MHz. For a 65MHz pixel clock frequency, a spreading selection of CP0 = 0,CP1=1 and SR0=1 gives a
percentage deviation of +/-1.56% (see Table 1). This results in frequency on ModOUT being swept from 64.5MHz to
65.5MHz. This particular example given here is a common EMI reduction method for 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
65MHz from Graphics
1
CLKIN
VDD
8
2
CP0
SR0
7
3
CP1
ModOUT 6
4
VSS
SSON#
0.1 µF
Modulation 65MHz signal
with +/- 1.56% Deviation
and Modulation Rate of
101.54 KHz. This signal is
connected back to the
Spread Spectrum input
Pin (SSIN) of the
Graphics Accelerator.
5
P2040B
Digital control for SS
enable or disable
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VDD, VIN
Voltage on any pin with respect to Ground
-0.5 to +4.6
V
Storage temperature
-65 to +125
°C
TA
Operating temperature
-40 to +85
°C
Ts
Max. Soldering Temperature (10 sec)
260
°C
TJ
Junction Temperature
150
°C
2
KV
TSTG
TDV
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.
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
3 of 8
P2040B
November 2006
rev 0.2
DC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
VIL
Input Low voltage
VSS – 0.3
-
0.8
V
VIH
Input High voltage
2.0
-
VDD + 0.3
V
-
-
-35
µA
-
-
35
µA
Input Low current
(100KΩ input pull-up resistor on inputs SR0, CP1and CP0)
Input High current
(100KΩ input pull-low resistor on input SSON#)
IIL
IIH
VOL
Output Low current
VDD = 3.3V, IOL = 20mA
-
-
0.4
V
VOH
Output High current
VDD = 3.3V, IOH = 20mA
2.5
-
-
V
IDD
Static Supply Current
-
0.6
-
mA
ICC
Dynamic Supply Current (3.3V and 15pF loading)
9
16
22
mA
VDD
Operating Voltage
3.0
3.3
3.6
V
tON
Power up time (first locked clock cycle after power up)
-
0.18
-
mS
Clock Output impedance
-
50
-
Ω
ZOUT
AC Electrical Characteristics
Symbol
Min
Typ
Max
Unit
Input Frequency
30
-
100
MHz
fOUT
Output Frequency
30
-
100
MHz
tLH1
Output Rise time
Measured at 0.8V to 2.0V
0.7
0.9
1.1
nS
Output Fall time
Measured at 2.0V to 0.8V
0.6
0.8
1.0
nS
-
360
-
pS
45
50
55
%
fIN
tHL
1
Parameter
tJC
Jitter (cycle to cycle)
tD
Output Duty cycle
Note: 1. tLH and tHL are measured into a capacitive load of 15pF
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
4 of 8
P2040B
November 2006
rev 0.2
Package Information
8-lead (150-mil) SOIC Package
H
E
D
A2
A
C
A1
D
θ
e
L
B
Dimensions
Symbol
Inches
Min
Max
Millimeters
Min
Max
A1
0.004
0.010
0.10
0.25
A
0.053
0.069
1.35
1.75
A2
0.049
0.059
1.25
1.50
B
0.012
0.020
0.31
0.51
C
0.007
0.010
0.18
0.25
D
0.193 BSC
4.90 BSC
E
0.154 BSC
3.91 BSC
e
0.050 BSC
1.27 BSC
H
0.236 BSC
6.00 BSC
L
0.016
0.050
0.41
1.27
θ
0°
8°
0°
8°
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
5 of 8
P2040B
November 2006
rev 0.2
8-lead Thin TSSOP(4.40-MM Body)
H
E
D
A2
A
C
θ
e
A1
L
B
Dimensions
Symbol
Inches
Min
Millimeters
Max
A
Min
Max
0.043
1.10
A1
0.002
0.006
0.05
0.15
A2
0.033
0.037
0.85
0.95
B
0.008
0.012
0.19
0.30
c
0.004
0.008
0.09
0.20
D
0.114
0.122
2.90
3.10
E
0.169
0.177
4.30
4.50
e
0.026 BSC
0.65 BSC
H
0.252 BSC
6.40 BSC
L
0.020
0.028
0.50
0.70
θ
0°
8°
0°
8°
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
6 of 8
P2040B
November 2006
rev 0.2
Ordering Information
Part number
P2040BF-08-ST
Marking
P2040BF
Package Configuration
Temperature Range
8-Pin SOIC, Tube, Pb Free
Commercial
P2040BF-08-SR
P2040BF
8-Pin SOIC, Tape and Reel, Pb Free
Commercial
P2040BG-08-ST
P2040BG
8-Pin SOIC, Tube, Green
Commercial
P2040BG-08-SR
P2040BG
8-Pin SOIC, Tape and Reel, Green
Commercial
P2040BF-08-TT
P2040BF
8-Pin TSSOP, Tube, Pb Free
Commercial
P2040BF-08-TR
P2040BF
8-Pin TSSOP, Tape and Reel, Pb Free
Commercial
P2040BG-08-TT
P2040BG
8-Pin TSSOP, Tube, Green
Commercial
P2040BG-08-TR
P2040BG
8-Pin TSSOP, Tape and Reel, Green
Commercial
I2040BF-08-TT
I2040BF
8-Pin TSSOP, Tube, Pb Free
Industrial
I2040BF-08-TR
I2040BF
8-Pin TSSOP, Tape and Reel, Pb Free
Industrial
I2040BG-08-TT
I2040BG
8-Pin TSSOP, Tube, Green
Industrial
I2040BG-08-TR
I2040BG
8-Pin TSSOP, Tape and Reel, Green
Industrial
I2040BF-08-ST
I2040BF
8-Pin SOIC, Tube, Pb Free
Industrial
I2040BF-08-SR
I2040BF
8-Pin SOIC, Tape and Reel, Pb Free
Industrial
I2040BG-08-ST
I2040BG
8-Pin SOIC, Tube, Green
Industrial
I2040BG-08-SR
I2040BG
8-Pin SOIC, Tape and Reel, Green
Industrial
Device Ordering Information
P 2 0 4 0 B
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 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)
Licensed under US patent #5,488,627, #6,646,463 and #5,631,920.
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
7 of 8
P2040B
November 2006
rev 0.2
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200
Campbell, CA 95008
Tel: 408-879-9077
Fax: 408-879-9018
www.pulsecoresemi.com
Copyright © PulseCore Semiconductor
All Rights Reserved
Preliminary Information
Part Number: P2040B
Document Version: v0.2
Note: This product utilizes US Patent # 6,646,463 Impedance Emulator Patent issued to PulseCore Semiconductor, dated 11-11-2003
© 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. 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
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The purchase of products from PulseCore does not convey a license under any patent rights, copyrights; mask works rights,
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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
Notice: The information in this document is subject to change without notice.
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