P1727CG-08ST [PULSECORE]
Low Power Notebook LCD Panel EMI Reduction IC; 低功耗笔记本电脑LCD面板的EMI降低IC
| 型号： | P1727CG-08ST |
| 厂家： | 
PulseCore Semiconductor |
| 描述： | Low Power Notebook LCD Panel EMI Reduction IC |
| 文件： | 总9页 (文件大小：178K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
April 2007
rev 0.2
P1727
Low Power Notebook LCD Panel EMI Reduction IC
Features
• FCC approved method of EMI attenuation
• Generates a low EMI spread spectrum of
the input clock frequency
• Optimized for frequency range:
P1727X: 20MHz to 40MHz
• Internal loop filter minimizes external
components and board space
• 8 different frequency deviations ranging
from +/-0.625% to –3.50%
• Low inherent Cycle-to-cycle jitter
• 3.3V Operating Voltage
• Supports notebook VGA and other LCD
timing controller applications
• Available in 8 pin SOIC and TSSOP
• Qualified for Industrial Temp Spec.
(-40°C to +85°C)
significant system cost savings by reducing the number
of circuit board layers and shielding that are traditionally
required to pass EMI regulations.
The P1727 modulates the output of a single PLL in
order to “spread” the bandwidth of a synthesized clock,
thereby decreasing the peak amplitudes of its
harmonics. This result in significantly lower system EMI
compared to the typical narrow band signal produced
by oscillators and most clock generators. Lowering EMI
by increasing a signal’s bandwidth is called “spread
spectrum clock generation”.
The P1727 uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented by using a proprietary all-digital method.
Applications
Product Description
The P1727 is targeted towards notebook LCD displays,
other displays using an LVDS interface, PC peripheral
devices and embedded systems.
The P1727 is a versatile spread spectrum
frequency modulator designed specifically for a wide
range of clock frequencies. The P1727 reduces
electromagnetic interference (EMI) at the clock source,
allowing system wide reduction of EMI of down stream
(clock and data dependent signals). The P1727 allows
Block Diagram
VDD
PDB
PLL
Modulation
CLKIN
Frequency
Phase
ModOUT
Loop
Filter
VCO
Output
Divider
Detector
Feedback
Divider
REFOUT
VSS
PulseCore Semiconductor
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.
April 2007
P1727
rev 0.2
Pin Configuration
CLKIN
VDD
PDB
NC
1
2
3
4
8
7
6
5
P1727
NC
VSS
ModOUT
REFOUT
Table 1 – Power Down Selection
PDB
0
1
Spread Spectrum
ModOUT
Disabled
Normal
PLL
Disabled
Normal
Mode
Power Down
Normal
N/A
ON
Table 2 Frequency Deviation Selection
P/ N
Deviation
-1.25%
-1.75%
-2.50%
-3.50%
P/N
Deviation
P1727A
P1727B
P1727C
P1727D
P1727E
P1727F
P1727G
P1727H
+/-0.625%
+/-0.875%
+/-1.25%
+/-1.75%
Pin Description
Pin#
Pin Name
Type
Description
External reference frequency input. Connect to externally generated
reference signal.
1
CLKIN
I
2
3
4
5
6
7
8
VDD
VSS
P
P
Connect to +3.3V
Ground Connection. Connect to system ground.
ModOUT
REFOUT
NC
O
O
Spread Spectrum Clock output
Reference output.
No connect
NC
No connect
PDB
I
Powerdown Pin.Pull low to disable spread spectrum clock output.
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
April 2007
rev 0.2
P1727
Schematic for notebook VGA application
27MHz Pixel Clock input
Tie low to enable
PDB
NC
CLKIN
VDD
1
2
3
8
7
6
5
VDD
P1727
0.1 µF
NC
VSS
4
REFOUT
ModOUT
ModOut Clock
Reference Clock O/P
Absolute Maximum Ratings
Symbol
Parameter
Rating
-0.5 to +7
-65 to +125
260
Unit
V
°C
°C
°C
VDD, VIN
TSTG
Ts
Voltage on any pin with respect to Ground
Storage temperature
Max. Soldering Temperature (10 sec)
Junction Temperature
TJ
150
Static Discharge Voltage
TDV
2
KV
(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.
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
April 2007
rev 0.2
P1727
DC Electrical Characteristics
Symbol
Parameter
Min
VSS – 0.3
2.0
Typ
Max
Unit
VIL
VIH
IIL
Input Low voltage
Input High voltage
Input Low current
Input High current
Output Low current
Output High current
0.8
V
VDD +0.3
-35
V
µA
µA
V
IIH
35
VOL
VOH
IDD
VDD = 3.3V, IOL = 20mA
VDD = 3.3V, IOH = 20mA
0.4
2.5
3.0
0
V
Static Supply Current (CLKIN, PDB pulled Low)
Dynamic Supply Current (No Load)
Operating Voltage
2
mA
mA
V
ICC
14
3.3
0.18
50
18
3.6
VDD
tON
ZOUT
TA
Power up time (first locked clock cycle after power up)
Clock Output impedance
mS
Ω
Operating temperature
70
°C
AC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
fIN
Input Frequency:
Output Frequency
Output Rise time
Output Fall time
Jitter (Cycle to cycle)
Output Duty cycle
P1727X
P1727X
Measured from 0.8V to 2.0V
Measured from 2.0V to 0.8V
20
20
0.7
0.6
40
40
1.1
1.0
325
55
MHz
MHz
nS
nS
pS
fOUT
1
tLH
tHL
0.9
0.8
225
50
1
tJC
tD
45
%
Note: 1. tLH and tHL are measured with a capacitive load of 15pF
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Notice: The information in this document is subject to change without notice.
April 2007
rev 0.2
P1727
Package Information
8-lead (150-mil) SOIC Package
H
E
D
A2
A
C
θ
e
A1
L
B
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
A1
A
0.004
0.053
0.049
0.012
0.007
A2
B
C
D
E
0.193 BSC
0.154 BSC
0.050 BSC
0.236 BSC
4.90 BSC
3.91 BSC
1.27 BSC
6.00 BSC
e
H
L
0.016
0°
0.050
8°
0.41
0°
1.27
8°
θ
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
April 2007
rev 0.2
P1727
8-lead Thin Shrunk Small Outline Package (4.40-MM Body)
H
E
D
A2
A
C
θ
e
A1
L
B
Dimensions
Symbol
Inches
Millimeters
Min
Max
Min
Max
A
A1
A2
B
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
c
D
E
e
0.026 BSC
0.252 BSC
0.65 BSC
6.40 BSC
H
L
0.020
0°
0.028
8°
0.50
0°
0.70
8°
θ
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
April 2007
P1727
rev 0.2
Ordering Information
Part number
P1727AG-08ST
P1727AG-08SR
P1727AG-08TT
P1727AG-08TR
P1727BG-08ST
P1727BG-08SR
P1727BG-08TT
P1727BG-08TR
P1727CG-08ST
P1727CG-08SR
P1727CG-08TT
P1727CG-08TR
P1727DG-08ST
P1727DG-08SR
P1727DG-08TT
P1727DG-08TR
P1727EG-08ST
P1727EG-08SR
P1727EG-08TT
P1727EG-08TR
P1727FG-08ST
P1727FG-08SR
P1727FG-08TT
P1727FG-08TR
P1727GG-08ST
P1727GG-08SR
P1727GG-08TT
P1727GG-08TR
P1727HG-08ST
P1727HG-08SR
P1727HG-08TT
P1727HG-08TR
Marking
P1727AG
P1727AG
P1727AG
P1727AG
P1727BG
P1727BG
P1727BG
P1727BG
P1727CG
P1727CG
P1727CG
P1727CG
P1727DG
P1727DG
P1727DG
P1727DG
P1727EG
P1727EG
P1727EG
P1727EG
P1727FG
P1727FG
P1727FG
P1727FG
P1727GG
P1727GG
P1727GG
P1727GG
P1727HG
P1727HG
P1727HG
P1727HG
Package Configuration
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
8 PIN SOIC, TUBE, Green
Temperature Range
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
8 PIN SOIC, TAPE & REEL, Green
8 PIN TSSOP, TUBE, Green
8 PIN TSSOP, TAPE & REEL, Green
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
April 2007
P1727
rev 0.2
Device Ordering Information
P 1 7 2 7 X G 0 8 - X X
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
Flow:
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.
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
April 2007
rev 0.2
P1727
Copyright © PulseCore Semiconductor
All Rights Reserved
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200
Campbell, CA 95008
Part Number: P1727
Document Version: 0.2
Tel: 408-879-9077
Fax: 408-879-9018
www.pulsecoresemi.com
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
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.
Low Power Notebook LCD Panel EMI Reduction IC
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Notice: The information in this document is subject to change without notice.
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