P2180BF-08-SR [PULSECORE]
Peak Reducing EMI Solution; 峰值抑制EMI解决方案
| 型号： | P2180BF-08-SR |
| 厂家： | 
PulseCore Semiconductor |
| 描述： | Peak Reducing EMI Solution |
| 文件： | 总9页 (文件大小：175K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
November 2006
rev 1.1
P2180 / 81 / 82 / 83 / 84
Peak Reducing EMI Solution
Features
•
•
•
FCC approved method of EMI attenuation.
•
Eight spread % selections:
± 0.625% to -3.5%.
Provides up to 15dB EMI reduction.
Generates a 1X low EMI spread spectrum clock
from the input frequency.
•
•
•
•
•
3.3V operating voltage.
CMOS/TTL compatible inputs and outputs.
Low-power CMOS design.
Supports notebook VGA and other LCD timing
controller applications.
Drop-in replacement to Cypress W180/1.
Products are available for industrial temperature
range.
•
Optimized for frequency range:
•
P2180 / 84: 20MHz to 40MHz
P2181: 60MHz to 160MHz
P2182 / 83: 10MHz to 20MHz
•
•
•
•
•
•
•
Internal
loop
filter
minimizes
external
components and board space.
Selectable spread options: Down Spread and
Center Spread.
•
Available in 8-pin SOIC and TSSOP packages.
Low inherent cycle-to-cycle jitter.
Product Description
The P2180/81X 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 results 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 P2180/81X is a versatile spread spectrum
frequency modulator designed specifically for a
wide range of clock frequencies from 20MHz to
40MHz and 60MHz to 160MHz (Refer Input
Frequency and Modulation Rate Table.) The
P2180/81X can generate an EMI reduced clock
form an OSC or a system generated clock. The
P2180/81A
to
P2180/81D
offer
various
combinations of spread options and percentage
deviations. (Refer Spread Deviation Selections
Table.) These combinations include Down and
Center Spread and percentage deviation range
from ± 0.625% to –3.50%.
The P2180/81X uses the most efficient and
optimized modulation profile approved by the FCC
and is implemented by using a proprietary all-digital
method.
Applications
The
P2180/81X
reduces
electromagnetic
interference (EMI) at the clock source, allowing
system wide reduction of EMI of down stream clock
and data dependent signals. The P2180/81X allows
significant system cost savings by reducing the
number of circuit board layers and shielding that
are traditionally required to pass EMI regulations.
The P2180/81X is targeted towards EMI
management for memory and LVDS interfaces in
mobile graphic chipsets and high-speed digital
applications such as PC peripheral devices,
consumer electronics, and embedded controller
systems.
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 1.1
P2180 / 81 / 82 / 83 / 84
VDD
Block Diagram
SRS
PLL
Modulation
XIN
Crystal
Oscillator
Frequency
Divider
Output
VCO
Phase
Loop
Filter
XOUT
Divider
Detector
Feedback
ModOUT
VSS
Pin Diagram
1
XIN
1
XIN
NC
8
8
NC
NC
XOUT
NC
NC
2
2
7
6
5
7
6
5
P2180X
P2181X
P2183X
VSS
SRS
VDD
VSS
SRS
VDD
3
4
3
4
ModOUT
ModOUT
Pin Description
Pin#
Pin Name
Type
Description
Connect to externally generated clock signal or crystal.
1
2
3
XIN
NC
VSS
I
No connect.
Ground to entire chip.
P
I
Spread Range Select. Digital logic input used to select frequency deviation (Refer
4
SRS
Spread Deviation Selections Table). This pin has an internal pull-up resistor.
5
6
7
ModOUT
VDD
O
P
Spread spectrum low EMI output.
Connect to +3.3V.
No connect.
NC
8
NC
No connect.
8*
XOUT
O
Crystal connection.
* Available for P2183 and P2184 only.
Low EMI Clock for Mobile VGA
2 of 9
Notice: The information in this document is subject to change without notice.
November 2006
rev 1.1
P2180 / 81 / 82 / 83 / 84
Input Frequency and Modulation Rate
Part Number
Input Frequency Range (MHz)
Output Frequency Range (MHz)
Modulation Rate
P2180/P2184
P2181
P2182/P2183
20 to 40
60 to 160
10 to 20
20 to 40
60 to 160
10 to 20
Input frequency / 768
Input frequency / 2048
TBD
Spread Deviation Selections
Part Number
SRS
Spread Deviation
0
1
0
1
0
1
0
1
-1.25% (Down)
-1.75% (Down)
± 1.25% (Center)
± 1.75% (Center)
-2.50% (Down)
-3.50 (Down)
P2180/1/2/3/4 A
P2180/1/2/3/4 B
P2180/1/2/3/4 C
P2180/1/2/3/4 D
± 0.625%(Center)
± 0.875% (Center)
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
V
°C
°C
°C
VDD, VIN
TSTG
TA
Voltage on any pin with respect to Ground
Storage temperature
Operating temperature
-0.5 to +4.6
-65 to +125
0 to +70
260
Ts
TJ
Max. Soldering Temperature (10 sec)
Junction Temperature
150
°C
TDV
2
KV
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.
Low EMI Clock for Mobile VGA
3 of 9
Notice: The information in this document is subject to change without notice.
November 2006
P2180 / 81 / 82 / 83 / 84
rev 1.1
DC Electrical Characteristics
Unless otherwise noted, VDD = 3.3V and TA =25°C
Symbol
VIL
Parameter
Min
GND – 0.3
Typ
Max
0.8
VDD + 0.3
-20.0
1.00
12.00
12.00
0.4
Unit
V
V
µA
µA
mA
mA
V
Input low voltage
Input high voltage
-
-
-
-
-
-
-
-
VIH
IIL
IIH
IXOL
IXOH
VOL
VOH
-
Input low current (input SRS)
-60.0
Input high current
-
2.00
-
XOUT output low current (@ 0.4V, VDD = 3.3V)
XOUT output high current (@2.5V, VDD = 3.3V)
Output low voltage (VDD = 3.3V, IOL = 20mA)
Output high voltage (VDD = 3.3V, IOH = 20mA)
-
2.8
-
V
Dynamic supply current normal mode (3.3V and
ICC
8.6 fIN - min
-
27.0 fIN - max
mA
10pF loading)
IDD
VDD
Static supply current standby mode
Operating voltage
Power up time (first locked clock cycle after power
-
-
4.5
3.3
-
-
mA
V
tON
-
-
-
-
-
-
mS
up)
ZOUT
Clock output impedance
Ω
AC Electrical Characteristics
Symbol
Parameter
Min
Typ
-
-
0.69
0.66
-
Max
160
160
-
Unit
fIN
fOUT
tLH*
tHL*
tJC
Input frequency
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)
10
10
-
MHz
MHz
ns
ns
ps
-
-
-200
45
200
55
tD
Output duty cycle
50
%
* tLH and tHL are measured into a capacitive load of 15pF
Low EMI Clock for Mobile VGA
4 of 9
Notice: The information in this document is subject to change without notice.
November 2006
P2180 / 81 / 82 / 83 / 84
rev 1.1
Package Information
8-Pin 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
Note: Controlling dimensions are millimeters.
SOIC: 0.074 grams unit weight.
Low EMI Clock for Mobile VGA
5 of 9
Notice: The information in this document is subject to change without notice.
November 2006
rev 1.1
P2180 / 81 / 82 / 83 / 84
8-Pin TSSOP
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
c
0.20
D
E
3.10
4.50
e
0.026 BSC
0.252 BSC
0.65 BSC
6.40 BSC
0.70
H
L
0.020
0°
0.028
8°
0.50
0°
θ
8°
Low EMI Clock for Mobile VGA
6 of 9
Notice: The information in this document is subject to change without notice.
November 2006
rev 1.1
P2180 / 81 / 82 / 83 / 84
Ordering Information
Part number
Marking
Package Type
Temperature
P218XxF-08-ST
P218XxF-08-SR
P218XxF-08-TT
P218XxF-08-TR
P218XxG-08-ST
P218XxG-08-SR
P218XxG-08-TT
P218XxG-08-TR
P2181XxF
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
Commercial
P2181XxF
P2181XxF
P2181XxF
P2181XxG
P2181XxG
P2181XxG
P2181XxG
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
Commercial
8-Pin TSSOP, Tape and Reel, Green
Note: X= 0 / 1 / 2 / 3 / 4
x= A / B / C / D
Device Ordering Information
P 2 1 8 X x F - 08 ST
SR - SOIC, T/R
TT – TSSOP, TUBE
TR - TSSOP, T/R
ST – SOIC, TUBE
DEVICE PIN COUNT
F = LEAD FREE AND RoHS COMPLIANT PART
G = GREEN PACKAGE, LEAD FREE, and RoHS
DEVICE NUMBER
P = Commercial Temperature Range (0°C to 70°C)
I = Industrial Temperature Range (-40°C to 85°C)
Low EMI Clock for Mobile VGA
7 of 9
Notice: The information in this document is subject to change without notice.
November 2006
rev 1.1
P2180 / 81 / 82 / 83 / 84
Licensed under US patent numbers 5,488,627 and 5,631,920.
Low EMI Clock for Mobile VGA
8 of 9
Notice: The information in this document is subject to change without notice.
November 2006
rev 1.1
P2180 / 81 / 82 / 83 / 84
PulseCore Semiconductor Corporation
1715 S. Bascom Ave Suite 200
Campbell, CA 95008
Copyright © PulseCore Semiconductor
All Rights Reserved
Part Number: P2180/81/82/83/84
Document Version: v1.1
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 EMI Clock for Mobile VGA
9 of 9
Notice: The information in this document is subject to change without notice.
相关型号：
©2020 ICPDF网 联系我们和版权申明