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PDF ASM3P2187B Data sheet ( Hoja de datos )
| Número de pieza | ASM3P2187B | |
| Descripción | Spread Spectrum Clock Generator | |
| Fabricantes | ON Semiconductor | |
| Logotipo |  |
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ASM3P2187A, ASM3P2187B
Product Preview
Spread Spectrum Clock
Generator for Mobile
Applications
Description
The ASM3P2187A/B is a versatile spread spectrum frequency
modulator designed specifically for a wide range of clock frequencies.
The ASM3P2187A/B reduces electromagnetic interference (EMI) at
the clock source, allowing system wide reduction of EMI of all clock
dependent signals. The ASM3P2187A/B 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.
ASM3P2187A device has an option of Spread ON/OFF and
ASM3P2187B device has Powerdown option.
Application
The ASM3P2187A/B is targeted towards mobile phones, mobile
audio players and PDAs.
Features
• Generates a 4X EMI Optimized Clock Signal at the Output
• Input Frequency: 12.5 MHz to 20 MHz
• Output Frequency: 50 MHz to 80 MHz
• SSON/PDB Option
• Selectable Centre Spread: ±0.5%, ±1.0%
• Low Power CMOS Design
• Supply Voltage: 3.3 V ± 0.3 V
• Industrial Temperature Range
• 8−pin TSSOP Package
• Drop−in Replacement for MB88155−412 Device
• These Devices are Pb−Free, 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
TSSOP−8
T SUFFIX
CASE 948AL
PIN CONFIGURATIONS
1
CLKIN/XIN
VDD
XOUT
ModOUT
SSON
VSS
SEL REFOUT
ASM3P2187A
(Top View)
CLKIN/XIN
XOUT
PDB
SEL
1
ASM3P2187B
(Top View)
VDD
ModOUT
VSS
REFOUT
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
August, 2011 − Rev. P2
1
Publication Order Number:
ASM3P2187A/D
1 page  
ASM3P2187A, ASM3P2187B
PACKAGE DIMENSIONS
TSSOP8, 4.4x3
CASE 948AL−01
ISSUE O
b
e
TOP VIEW
D
A2
E1 E
A
SYMBOL
A
A1
A2
b
c
D
E
E1
e
L
L1
θ
MIN
0.05
0.80
0.19
0.09
2.90
6.30
4.30
0.50
0º
NOM
0.90
3.00
6.40
4.40
0.65 BSC
1.00 REF
0.60
MAX
1.20
0.15
1.05
0.30
0.20
3.10
6.50
4.50
0.75
8º
q1 c
SIDE VIEW
A1
Notes:
(1) All dimensions are in millimeters. Angles in degrees.
(2) Complies with JEDEC MO-153.
L1
END VIEW
L
http://onsemi.com
5
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet ASM3P2187B.PDF ] | |
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