Datenblatt-pdf.com


P2040A Schematic ( PDF Datasheet ) - Alliance Semiconductor

Teilenummer P2040A
Beschreibung LCD Panel EMI Reduction IC
Hersteller Alliance Semiconductor
Logo Alliance Semiconductor Logo 




Gesamt 9 Seiten
P2040A Datasheet, Funktion
October 2005
rev 1.2
LCD Panel EMI Reduction IC
P2040A
Features
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
www.DataSheet4U.com
ƒ
ƒ
ƒ
ƒ
ƒ
ƒ
FCC approved method of EMI attenuation.
Provides up to 20dB of EMI suppression.
Generates a low EMI spread spectrum clock of the
input frequency.
Input frequency range: 30MHz to 100MHz.
Optimized for VGA, SVGA, and higher resolution
XGA LCD Panels.
Internal loop filter minimizes external components
and board space.
Six selectable high spread ranges up to ± 2%.
Two selectable modulation rates.
SSON# control pin for spread spectrum enable and
disable options.
Low cycle-to-cycle jitter.
Wide operating range.
Low power CMOS design.
Supports most mobile graphic accelerator
specifications.
Products available for automotive temperature
range. (Refer Spread Spectrum Range Selection
Tables)
Available in 8-pin SOIC and TSSOP Packages.
Product Description
The P2040A is a versatile spread spectrum frequency
modulator designed specifically for digital flat panel
applications. The P2040A reduces electromagnetic
interference (EMI) at the clock source, allowing system
wide reduction of EMI of down stream clock and data
dependent signals. The P2040A 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 P2040A uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented in a proprietary all digital method.
The P2040A 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 P2040A is targeted towards digital flat panel
applications for notebook PCs, palm-size PCs, office
automation equipments and LCD monitors.
Block Diagram
SR0 SR1 MRA SSON#
VDD
CLKIN
Frequency
Divider
Feedback
Divider
Modulation
Phase
Detector
Loop
Filter
PLL
VCO
Output
Divider
ModOUT
VSS
Alliance Semiconductor
2575 Augustine Drive Santa Clara, CA Tel: 408.855.4900 Fax: 408.855.4999 www.alsc.com
Notice: The information in this document is subject to change without notice.






P2040A Datasheet, Funktion
October 2005
rev 1.2
Package Information
8-lead (150-mil) SOIC Package
P2040A
www.DataSheet4U.com
EH
D
e
B
A2 A
A1
θ
C
L
Symbol
A1
A
A2
B
C
D
E
e
H
L
θ
Dimensions
Inches
Millimeters
Min Max
Min
Max
0.004
0.010
0.10
0.25
0.053
0.069
1.35
1.75
0.049
0.059
1.25
1.50
0.012
0.020
0.31
0.51
0.007
0.010
0.18
0.25
0.193 BSC
4.90 BSC
0.154 BSC
3.91 BSC
0.050 BSC
1.27 BSC
0.236 BSC
6.00 BSC
0.016
0.050
0.41
1.27
0° 8°
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
6 of 9

6 Page







SeitenGesamt 9 Seiten
PDF Download[ P2040A Schematic.PDF ]

Link teilen




Besondere Datenblatt

TeilenummerBeschreibungHersteller
P2040ALCD Panel EMI Reduction ICAlliance Semiconductor
Alliance Semiconductor
P2040CLCD Panel EMI Reduction ICAlliance Semiconductor
Alliance Semiconductor

TeilenummerBeschreibungHersteller
CD40175BC

Hex D-Type Flip-Flop / Quad D-Type Flip-Flop.

Fairchild Semiconductor
Fairchild Semiconductor
KTD1146

EPITAXIAL PLANAR NPN TRANSISTOR.

KEC
KEC


www.Datenblatt-PDF.com       |      2020       |      Kontakt     |      Suche