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部品番号 ASM3P2182A
部品説明 LCD Panel EMI Reduction IC
メーカ ON Semiconductor
ロゴ ON Semiconductor ロゴ 
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ASM3P2182A Datasheet, ASM3P2182A PDF,ピン配置, 機能
ASM3P2182A
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LCD Panel EMI Reduction IC
Description
The ASM3P2182A is a versatile spread spectrum frequency
modulator designed specifically for a wide range of input clock
frequencies from 25 MHz to 210 MHz. (Refer to Input Frequency and
Modulation Rate Table). The ASM3P2182A can generate an EMI
reduced clock from an OSC or a system generated clock. The
ASM3P2182A offers a Center Spread clock and with a percentage
deviation from ± 0.13% or ± 1.24%.
The ASM3P2182A reduces electromagnetic interference (EMI) at
the clock source, allowing system wide reduction of EMI of down
stream clock and data dependent signals. The ASM3P2182A allows
significant system cost savings by reducing the number of circuit
board layers ferrite beads, shielding and other passive components that
are traditionally required to pass EMI regulations.
The ASM3P2182A uses the most efficient and optimized
modulation profile approved by the FCC and is implemented in a
proprietary all digital method.
The ASM3P2182A 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.’
http://onsemi.com
SOIC8
S SUFFIX
CASE 751BD
TSSOP8
T SUFFIX
CASE 948AL
PIN CONFIGURATION
1
CLKIN
FS1
GND
FS0
S1 VDD
S0 ModOUT
(Top View)
Applications
The ASM3P2182A is targeted towards EMI management for
memory and LVDS interfaces in mobile graphic chipsets and
highspeed digital applications such as PC peripheral devices,
consumer electronics, and embedded controller systems.
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
Features
FCC Approved Method of EMI Attenuation
Provides up to 15 dB EMI Reduction
Generates a 1X Low EMI Spread Spectrum Clock of the Input Frequency
Input Frequency Range: 25 MHz to 210 MHz
Internal Loop Filter Minimizes External Components and Board Space
Center Spread
4 Spread Frequency Deviation Selections: ± 0.13% to ± 1.24%
Low Inherent CycletoCycle Jitter
3.3 V Operating Voltage
TTL or CMOS Compatible Inputs and Outputs
Low Power CMOS Design
Supports Notebook VGA and Other LCD Timing Controller Applications
Products are Available for Industrial Temperature Range
Available in 8pin SOIC and TSSOP Packages
These are PbFree Devices
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
© Semiconductor Components Industries, LLC, 2011
August, 2011 Rev. P3
1
Publication Order Number:
ASM3P2182A/D

--------------------------------------------
ASM3P2182A pdf, 電子部品, 半導体, ピン配列
ASM3P2182A
Table 4. ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Rating
Unit
VDD
Supply Voltage pin with respect to Ground
0.5 to +4.6
V
VIN Input Voltage pin with respect to Ground
VSS0.5 to VDD+0.5
V
VOUT
Output Voltage pin with respect to Ground
VSS0.5 to VDD+0.5
V
TSTG
Storage temperature
55 to +125
°C
Ts Max. Soldering Temperature (10 sec)
260 °C
TJ Junction Temperature
150 °C
TDV Static Discharge Voltage (As per JEDEC STD22A114B) 2 KV
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
Table 5. RECOMMENDED OPERATING CONDITIONS
Parameter
Description
VDD
Operating Voltage
TA Operating Temperature (Ambient Temperature)
CL Load Capacitance
CIN Input Capacitance
Min Typ Max Unit
2.7 3.3 3.7
V
0 +70 °C
15 pF
5 pF
Table 6. DC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
VIL Input low voltage
VIH Input high voltage
IIL Input low current
IIH Input high current
VOL Output low voltage (VDD = 3.3 V, IOL = 20 mA)
VOH Output high voltage (VDD = 3.3 V, IOH = 20 mA)
ICC Dynamic supply current
Normal mode (3.3 V and 10 pF loading)
IDD
Static supply current
Standby mode (Note 3)
VDD Operating voltage
tON
Power up time
(first locked clock cycle after power up)
ZOUT
Clock out impedance
3. CLKIN pin is pulled low.
Table 7. AC ELECTRICAL CHARACTERISTICS
Symbol
Parameter
CLKIN
Input frequency
ModOUT
Output frequency
tLH (Note 4)
Output rise time (measured at 0.8 V to 2.0 V)
tHL (Note 4)
Output fall time (measured at 2.0 V to 0.8 V)
tJC Jitter (cycle to cycle)
TD Output duty cycle
4. tLH and tHL are measured into a capacitive load of 15 pF.
Min
GND – 0.3
2.0
Typ
2.5
8.46 12
0.6
2.7 3.3
0.18
50
Max
0.8
VDD + 0.3
35
35
0.4
17.78
3.7
Unit
V
V
mA
mA
V
V
mA
mA
V
mS
W
Min Typ Max Unit
25 210 MHz
25 210 MHz
1.2 1.32 1.4
nS
0.8 0.9 1.0 nS
360 pS
45 50 55 %
http://onsemi.com
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