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部品番号 ASM3P2775A
部品説明 Low Power Peak EMI Reducing Solution
メーカ ON Semiconductor
ロゴ ON Semiconductor ロゴ 
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ASM3P2775A Datasheet, ASM3P2775A PDF,ピン配置, 機能
ASM3P2775A
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Low Power Peak EMI
Reducing Solution
Description
The ASM3P2775A is a versatile spread spectrum frequency
modulator designed specifically for a wide range of clock frequencies.
The ASM3P2775A reduces electromagnetic interference (EMI) at the
clock source, allowing system wide reduction of EMI of all clock
dependent signals. The ASM3P2775A allows significant system cost
savings by reducing the number of circuit board layers, ferrite beads
and shielding that are traditionally required to pass EMI regulations.
The ASM3P2775A uses the most efficient and optimized
modulation profile approved by the FCC and is implemented by using
a proprietary all digital method.
The ASM3P2775A 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.’
Applications
The ASM3P2775A is targeted towards all portable devices with
very low power requirements like MP3 players and digital still
cameras.
Features
Generates an EMI Optimized Clock Signal at the Output
Integrated Loop Filter Components
Operates with a 3.3 V Supply
Operating Current less than 4 mA
Low Power CMOS Design
Input Frequency Range: 13 MHz to 30 MHz
Generates a 1X Low EMI Spread Spectrum Clock of the Input
Frequency
Frequency Deviation: ±1.8% (Typ) @ 14.7 MHz Input Frequency
Available in 6pin TSOT23, 8pin SOIC and 8pin TSSOP
Packages
Commercial Temperature Range
These Devices are PbFree, Halogen Free/BFR Free and are RoHS
Compliant
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
http://onsemi.com
TSOT6
O SUFFIX
CASE 419AF
TSSOP8
T SUFFIX
CASE 948AL
SOIC8
S SUFFIX
CASE 751BD
PIN CONFIGURATIONS
1
PD
VSS
XOUT
ModOUT
XIN / CLKIN
VDD
6Pin TSOT23 Package
(Top View)
1
XIN / CLKIN
VDD
XOUT
NC
PD ModOUT
NC VSS
8Pin SOIC and TSSOP Packages
(Top View)
KEY SPECIFICATIONS
Description
Supply Voltage
CycletoCycle Jitter
Output Duty Cycle
Modulation Rate Equation
Frequency Deviation
Specification
VDD = 3.3 V ± 0.3 V
200 pS (Typ)
45/55% (worst case)
FIN/640
±1.8% (Typ) @
14.7 MHz
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
August, 2011 Rev. P2
1
Publication Order Number:
ASM3P2775A/D

--------------------------------------------
ASM3P2775A pdf, 電子部品, 半導体, ピン配列
ASM3P2775A
Figure 2. Modulation Profile
Table 3. SPECIFICATIONS
Description
Frequency Range
Modulation Equation
Frequency Deviation
Specification
13 MHz < CLKIN < 30 MHz
FIN/640
±1.8% (Typ) @ 14.7 MHz
Table 4. ABSOLUTE MAXIMUM RATINGS
Symbol
Parameter
Rating
Unit
VDD, VIN Voltage on any pin with respect to Ground
0.5 to +4.6
V
TSTG
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
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. DC ELECTRICAL CHARACTERISTICS
(Test condition: All parameters are measured at room temperature (+25°C) unless otherwise stated.)
Symbol
Parameter
Min Typ
VIL Input low voltage
VIH Input high voltage
IIL Input low current
IIH Input high current
IXOL XOUT output low current (@ 0.4 V, VDD = 3.3 V)
IXOH
XOUT output high current (@ 2.5 V, VDD = 3.3 V)
VOL Output low voltage (VDD = 3.3 V, IOL = 8 mA)
VOH Output high voltage (VDD = 3.3 V, IOH = 8 mA)
IDD Static supply current (Note 1)
ICC Dynamic supply current (3.3 V, 16 MHz and no load)
VDD Operating voltage
tON Powerup time (first locked cycle after powerup) (Note 2)
ZOUT
Output impedance
1. XIN / CLKIN pin and PD pin are pulled low.
2. VDD and XIN / CLKIN input are stable, PD pin is made high from low.
VSS0.3
2.0
2.5
3.0
3
3
3.5
3.3
45
Max
0.8
VDD+0.3
35
35
0.4
10
3.6
5
Unit
V
V
mA
mA
mA
mA
V
V
mA
mA
V
mS
W
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