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PDF P2041A Data sheet ( Hoja de datos )
| Número de pieza | P2041A | |
| Descripción | Versatile EMI Reduction IC | |
| Fabricantes | ON Semiconductor | |
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P2041A
Versatile EMI Reduction IC
Description
The P2041A is a selectable spread spectrum frequency modulator
designed specifically for PC peripheral and embedded controller
markets. The P2041A reduces electromagnetic interference (EMI) at
the clock source which provides system wide reduction of EMI of all
clock dependent signals. The P2041A allows significant system cost
savings by reducing the number of circuit board layers and shielding
that are traditionally required to pass EMI regulations.
The P2041A uses the most efficient and optimized modulation
profile approved by the FCC and is implemented in a proprietary
all−digital method.
The P2041A 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 P2041A is targeted towards the embedded controller market
and PC peripheral markets including scanners, MFP’s, printers, PDA,
IA, and GPS devices.
Features
• FCC Approved Method of EMI Attenuation
• Provides up to 20 dB of EMI Suppression
• Generates a Low EMI Spread Spectrum Clock of the Input
Frequency
• Optimized for 25 MHz to 60 MHz Input Frequency Range
• Internal Loop Filter Minimizes External Components and Board
Space
• 4 Selectable Spread Ranges
• SSON Control Pin for Spread Spectrum Enable and Disable Options
• Low Cycle−to−Cycle Jitter
• 3.3 V or 5.0 V Operating Voltage
• Low Power CMOS Design
• Available in 8−pin SOIC and TSSOP Packages
• These are Pb−Free Devices
http://onsemi.com
SOIC−8
S SUFFIX
CASE 751BD
TSSOP−8
T SUFFIX
CASE 948AL
PIN CONFIGURATION
1
XIN / CLK
VDD
XOUT
SR1
P2041A
SR0
ModOUT
VSS
SSON
(Top View)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 7 of this data sheet.
© Semiconductor Components Industries, LLC, 2011
August, 2011 − Rev. 2
1
Publication Order Number:
P2041A/D
1 page  
P2041A
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
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet P2041A.PDF ] | |
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