http://www.datasheet4u.com

900,000+ Datasheet PDF Search and Download

Datasheet4U offers most rated semiconductors datasheets pdf





Alliance Semiconductor Corporation
Alliance Semiconductor Corporation

ASM3P2184A Datasheet Preview

ASM3P2184A Datasheet

LCD Panel EMI Reduction IC

No Preview Available !

ASM3P2184A pdf
November 2003
rev 1.0
www.DataSheet4U.com
LCD Panel EMI Reduction IC
ASM3P2184A
Features
ƒ FCC approved method of EMI attenuation.
ƒ Provides up to 15dB EMI reduction.
ƒ Generates a 1X low EMI spread spectrum clock of
the input frequency.
ƒ Input frequency range: 6MHz to 70 MHz.
ƒ Internal loop filter minimizes external components
and board space.
ƒ Spread option: Center Spread.
ƒ 2 spread frequency deviation selections:
o ±0.625% or ±1.875%
ƒ Low inherent cycle-to-cycle jitter.
ƒ 3.3V operating voltage range.
ƒ Low power CMOS design.
ƒ Supports notebook VGA and other LCD timing
controller applications.
ƒ Product available for industrial temperature range.
ƒ Available in 8-pin SOIC and TSSOP.
Product Description
The ASM3P2184A is a versatile spread spectrum
frequency modulators designed specifically for a wide
range of input clock frequencies from 6MHz to 70MHz.
(Refer Input Frequency and Modulation Rate Table). The
ASM3P2184A can generate an EMI reduced clock from
an OSC or a system generated clock. The
ASM3P2184A offers a Center Spread clock with 2
percentage deviations; ±0.625% and ±1.675%.
The ASM3P2184A reduces electromagnetic interference
(EMI) at the clock source, allowing system wide reduction
of EMI of down stream clock and data dependent
signals. The ASM3P2184A 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 ASM3P2184A uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented in a proprietary all digital method.
The ASM3P2184A 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 ASM3P2184A is targeted towards EMI management
for memory and LVDS interfaces in mobile graphic
chipsets and high-speed digital applications such as PC
peripheral devices, consumer electronics, and embedded
controller systems.
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.



Alliance Semiconductor Corporation
Alliance Semiconductor Corporation

ASM3P2184A Datasheet Preview

ASM3P2184A Datasheet

LCD Panel EMI Reduction IC

No Preview Available !

ASM3P2184A pdf
November 2003
rev 1.0
www.DataSheet4U.com
Block Diagram
XIN
XOUT
Crystal
Oscillator
Pin Configuration
ASM3P2184A
FS0 FS1
SS%
VDD
Frequency
Divider
Feedback
Divider
Modulation
Phase
Detector
Loop
Filter
PLL
VCO
Output
Divider
MODOUT
VSS
XIN 1
8 FS1
XOUT
GND
27
ASM3P2184A
36
FS0
VDD
SS% 4
5 ModOUT
LCD Panel EMI Reduction IC
Notice: The information in this document is subject to change without notice.
2 of 9


Part Number ASM3P2184A
Description LCD Panel EMI Reduction IC
Maker Alliance Semiconductor Corporation
Total Page 9 Pages
PDF Download
ASM3P2184A pdf
Download PDF File
ASM3P2184A pdf
View for Mobile



Buy Electronic Components




Related Datasheet

1 ASM3P2184A LCD Panel EMI Reduction IC Alliance Semiconductor Corporation
Alliance Semiconductor Corporation
ASM3P2184A pdf






Part Number Start With

0    1    2    3    4    5    6    7    8    9    A    B    C    D    E    F    G    H    I    J    K    L    M    N    O    P    Q    R    S    T    U    V    W    X    Y    Z

site map

webmaste! click here

contact us

Buy Components