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PDF P2027A Data sheet ( Hoja de datos )
| Número de pieza | P2027A | |
| Descripción | General Purpose EMI Reduction IC | |
| Fabricantes | ON Semiconductor | |
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P2027A
General Purpose EMI
Reduction IC
Description
The P2027 is a versatile spread spectrum frequency modulator
designed specifically for digital camera and other digital video and
imaging applications. The P2027 reduces electromagnetic interference
(EMI) at the clock source, which provides system wide reduction of
EMI of all clock dependent signals. The P2027 allows significant
system cost savings by reducing the number of circuit board layers and
shielding that are traditionally required to pass EMI regulations.
The P2027 uses the most efficient and optimized modulation profile
approved by the FCC and is implemented in a proprietary all−digital
method.
The P2027 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 P2027 is targeted towards DSC market as well as other imaging
and digital video applications like DVD and VCD players.
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 27 MHz Operation
• Internal Loop Filter Minimizes External Components and Board
Space
• 3 Selectable Spread Ranges and 2 Modulation Rate Options
• SSON Control Pin for Spread Spectrum Enable and Disable Options
• Low Cycle−to−Cycle Jitter
• 3.3 V Operating Voltage
• 16 mA Output Drives
• TTL or CMOS Compatible Outputs
• Low Power CMOS Design
• Supports Digital Camera and Other Digital Video and Imaging
Applications
• 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 / CLKIN
VDD
XOUT
SR0
MRA
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:
P2027A/D
1 page  
P2027A
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
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