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參數(shù)資料
| 型號(hào)： | I2040BF-08-ST |
| 元件分類(lèi)： | 時(shí)鐘及定時(shí) |
| 英文描述： | 2040 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| 封裝： | 0.150 INCH, ROHS COMPLIANT, SOIC-8 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大?。?/td> | 330K |
| 代理商： | I2040BF-08-ST |
November 2005
P2040B
rev 0.1
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.
LCD Panel EMI Reduction IC
Features
Provides up to 15dB of EMI suppression
FCC approved method of EMI attenuation
Generates a low EMI spread spectrum clock of the
input frequency
30MHz to 100MHz input frequency range
Optimized for 32.5MHz, 54MHz, 65MHz, 81MHz,
pixel clock frequencies
Internal loop filter minimizes external components
and board space
8 selectable spread ranges, up to +/- 2.0%
SSON# control pin for spread spectrum enable and
disable options
Low cycle-to-cycle jitter
3.3V operating voltage
Ultra low power CMOS design
Supports most mobile graphic accelerator and LCD
timing controller specifications
Available in 8 pin SOIC and TSSOP Packages.
Product Description
The P2040B is a selectable spread spectrum frequency
modulator designed specifically for digital flat panel
applications.
The
P2040B
reduces
electromagnetic
interference (EMI) at the clock source which provides
system wide reduction of EMI of all clock dependent
signals.
The P2040B allows significant system cost savings by
reducing the number of circuit board layers and shielding
that are traditionally required to pass EMI regulations.
The P2040B uses the most efficient and optimized
modulation profile approved by the FCC and is
implemented in a proprietary all digital method.
The P2040B 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 P2040B is targeted towards digital flat panel
applications for Notebook PCs, Palm-size PCs, Office
Automation Equipments and LCD Monitors.
Block Diagram
Loop
Filter
Output
Divider
Modulation
VDD
SR0
VSS
ModOUT
CLKIN
Frequency
Divider
Feedback
Divider
Phase
Detector
VCO
PLL
CP1 CP0 SSON#
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| I2042AF-08SR | 2042 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| I2042A-08ST | 2042 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| I2042AG-08TT | 2042 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| I2560B-08TR | 32 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| I2560BG-08TT | 32 MHz, OTHER CLOCK GENERATOR, PDSO8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| I2040BF-08-TR | 制造商:PULSECORE 制造商全稱(chēng):PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BF-08-TT | 制造商:PULSECORE 制造商全稱(chēng):PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BG-08-SR | 制造商:PULSECORE 制造商全稱(chēng):PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BG-08-ST | 制造商:PULSECORE 制造商全稱(chēng):PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BG-08-TR | 制造商:PULSECORE 制造商全稱(chēng):PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
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