PulseCore ASM3P2182AF-08SR Lcd panel emi reduction ic Datasheet

ASM3P2182A
August 2007
rev 1.5
LCD Panel EMI Reduction IC
Features
The ASM3P2182A reduces electromagnetic interference
•
FCC approved method of EMI attenuation.
•
Provides up to 15dB EMI reduction.
•
Generates a 1X low EMI spread spectrum clock of
(EMI) at the clock source, allowing system wide
the input frequency.
Input frequency range: 25MHz to 210MHz.
•
Internal loop filter minimizes external components
and board space.
Center spread.
•
4 spread frequency deviation selections: ± 0.13% to
± 1.24%.
Low inherent Cycle-to-cycle jitter.
•
3.3V Operating Voltage.
•
TTL or CMOS compatible inputs and outputs.
•
Low power CMOS design.
•
Supports notebook VGA and other LCD timing
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’.
Available in 8-pin SOIC and TSSOP Packages.
Applications
Product Description
The ASM3P2182A is a versatile spread spectrum
frequency modulator designed specifically for a wide
range of input clock frequencies from 25MHz to 210MHz.
(Refer Input Frequency and Modulation Rate Table). The
ASM3P2182A can generate an EMI reduced clock from
system
modulation profile approved by the FCC and is
clock, and more importantly, decreases the peak
range.
a
The ASM3P2182A uses the most efficient and optimized
The ASM3P2182A modulates the output of a single PLL
Products are available for Industrial temperature
or
components that are traditionally required to pass EMI
in order to “spread” the bandwidth of a synthesized
controller applications.
OSC
board layers ferrite beads, shielding and other passive
implemented in a proprietary all digital method.
•
an
dependent signals. The ASM3P2182A allows significant
regulations.
•
•
down stream clock and data
system cost savings by reducing the number of circuit
•
•
reduction of EMI of
generated
clock.
The ASM3P2182A 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.
The
ASM3P2182A offers a Center Spread clock and with a
percentage deviation from ± 0.13% or ± 1.24%.
FS0
FS1
S0
VDD
PLL
Modulation
CLKIN
Crystal
Oscillator
Frequency
Divider
Feedback
Divider
Phase
Detector
Loop
Filter
VCO
Output
Divider
ModOUT
VSS
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
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ASM3P2182A
August 2007
rev 1.5
Pin Configuration
CLKIN 1
GND 2
8 FS1
ASM3P2182A
7 FS0
S1 3
6 VDD
S0 4
5 ModOUT
Pin Description
Pin#
Pin Name
Type
Description
1
CLKIN
I
Connect to externally generated clock signal.
2
GND
P
3
S1
I
4
S0
I
5
ModOUT
O
Ground to entire chip.
Spread range select. Digital logic input used to select frequency deviation
(Refer Spread Deviation Table). This pin has an internal pull-up resistor.
Spread range select. Digital logic input used to select frequency deviation
(Refer Spread Deviation Table). This pin has an internal pull-up resistor.
Spread spectrum low EMI output.
6
VDD
P
7
FS0
I
8
FS1
I
Power supply for the entire chip (3.3V).
Frequency range select. Digital logic input used to select frequency range
(Refer Input Frequency and Modulation Rate Table).
This pin has an internal pull-up resistor.
Frequency range select. Digital logic input used to select frequency range
(Refer Input Frequency and Modulation Rate Table).
This pin has an internal pull-up resistor.
Input Frequency and Modulation Rate table
FS1 (pin 8)
FS0 (pin 7)
Frequency Range
0
0
25MHz to 50MHz
0
1
50MHz to 103MHz
1
0
75MHz to 150MHz
1
1
160MHz to 210MHz
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
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ASM3P2182A
August 2007
rev 1.5
Spread Deviation Selection table
S1
S0
25
MHz
40
MHz
65
MHz
Spreading Range (± %)
81*
81**
108
MHz
MHz
MHz
0
0
0.28
0.19
0.15
0.12
0.18
0
1
0.8
0.3
0.3
0.2
0.5
1
0
1.2
0.54
0.45
0.4
1
1
2.1
1.0
1.1
0.9
120
MHz
162
MHz
200
MHz
0.15
0.1
0.1
0.06
0.3
0.19
0.3
0.1
0.8
0.6
0.36
1.0
0.6
1.4
1.1
0.75
1.9
1.2
*Frequency Range- 50MHz to 103MHz
** Frequency Range- 75MHz to 150MHz
Absolute Maximum Ratings
Symbol
Rating
Unit
-0.5 to +4.6
V
Input Voltage pin with respect to Ground
VSS-0.5 to VDD+0.5
V
VOUT
Output Voltage pin with respect to Ground
VSS-0.5 to VDD+0.5
V
TSTG
Storage temperature
-55 to +125
°C
VDD
VIN
Parameter
Supply Voltage pin with respect to Ground
Ts
Max. Soldering Temperature (10 sec)
260
°C
TJ
Junction Temperature
150
°C
TDV
Static Discharge Voltage(As per JEDEC STD22- A114-B)
2
KV
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.
Recommended Operating Conditions
Parameter
VDD
Description
Operating Voltage
TA
Operating Temperature (Ambient Temperature)
CL
Load Capacitance
CIN
Input Capacitance
Min
Typ
2.7
3.3
0
5
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
Max
Unit
3.7
V
+70
°C
15
pF
pF
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ASM3P2182A
August 2007
rev 1.5
DC Electrical Characteristics
Symbol
Parameter
Min
Typ
Max
Unit
VIL
Input low voltage
GND – 0.3
0.8
V
VIH
Input high voltage
2.0
VDD + 0.3
V
IIL
Input low current
-35
µA
IIH
Input high current
35
µA
Output low voltage (VDD = 3.3V, IOL = 20mA)
0.4
V
VOL
VOH
Output high voltage (VDD = 3.3V, IOH = 20mA)
Dynamic supply current
Normal mode (3.3V and 10pF loading)
Static supply current
Standby mode*
ICC
IDD
VDD
2.5
V
8.46
Operating voltage
12
0.6
2.7
3.3
Power up time
(first locked clock cycle after power up)
Clock out impedance
tON
ZOUT
17.78
mA
mA
3.7
V
0.18
mS
50
Ω
* CLKIN pin is pulled low
AC Electrical Characteristics
Symbol
CLKIN
Parameter
Min
Typ
Max
Unit
Input frequency
25
210
MHz
Output frequency
25
210
MHz
tLH*
Output rise time (measured at 0.8V to 2.0V)
1.2
1.32
1.4
nS
tHL*
Output fall time (measured at 2.0V to 0.8V)
0.8
0.9
1.0
nS
tJC
Jitter (cycle to cycle)
360
pS
TD
Output duty cycle
55
%
ModOUT
45
50
*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.
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ASM3P2182A
August 2007
rev 1.5
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.
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ASM3P2182A
August 2007
rev 1.5
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
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.
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ASM3P2182A
August 2007
rev 1.5
Ordering Information
Part Number
Marking
ASM3P2182AF-08TT
3P2182AF
8-Pin TSSOP, TUBE, Pb Free
Package
Temperature
Commercial
ASM3P2182AF-08TR
3P2182AF
8-Pin TSSOP, TAPE & REEL, Pb Free
Commercial
ASM3P2182AF-08ST
3P2182AF
8-Pin SOIC, TUBE, Pb Free
Commercial
ASM3P2182AF-08SR
3P2182AF
8-Pin SOIC, TAPE & REEL, Pb Free
Commercial
ASM3P2182A-08TT
3P2182A
8-Pin TSSOP, TUBE
Commercial
ASM3P2182A-08TR
3P2182A
8-Pin TSSOP, TAPE & REEL
Commercial
ASM3P2182A-08ST
3P2182A
8-Pin SOIC, TUBE
Commercial
ASM3P2182A-08SR
3P2182A
8-Pin SOIC, TAPE & REEL
Commercial
ASM3P2182AG-08TT
3P2182AG
8-Pin TSSOP, TUBE, Green
Commercial
ASM3P2182AG-08TR
3P2182AG
8-Pin TSSOP, TAPE & REEL, Green
Commercial
ASM3P2182AG-08ST
3P2182AG
8-Pin SOIC, TUBE, Green
Commercial
ASM3P2182AG-08SR
3P2182AG
8-Pin SOIC, TAPE & REEL, Green
Commercial
Device Ordering Information
ASM 3P
2182A F
08 TR
R = Tape & Reel, T = Tube or Tray
O = SOT
S = SOIC
T = TSSOP
A = SSOP
V = TVSOP
B = BGA
Q = QFN
U = MSOP
E = TQFP
L = LQFP
U = MSOP
P = PDIP
D = QSOP
X = SC-70
DEVICE PIN COUNT
F = LEAD FREE AND RoHS COMPLIANT PART
G = GREEN PACKAGE
PART NUMBER
X= Automotive
I= Industrial
P or n/c = Commercial
(-40C to +125C) (-40C to +85C)
(0C to +70C)
1 = Reserved
2 = Non PLL based
3 = EMI Reduction
4 = DDR support products
5 = STD Zero Delay Buffer
6 = Power Management
7 = Power Management
8 = Power Management
9 = Hi Performance
0 = Reserved
PulseCore Semiconductor Mixed Signal Product
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
ASM3P2182A
August 2007
rev 1.5
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
Part Number: ASM3P2182A
Document Version: 1.5
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
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from such use.
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
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