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| 型号： | I2040BF-08-SR |
| 厂商： | ALLIANCE SEMICONDUCTOR CORP |
| 元件分类： | 时钟及定时 |
| 英文描述： | 2040 SERIES, PLL BASED CLOCK DRIVER, 1 TRUE OUTPUT(S), 0 INVERTED OUTPUT(S), PDSO8 |
| 封装： | 0.150 INCH, ROHS COMPLIANT, SOIC-8 |
| 文件页数： | 3/8页 |
| 文件大小： | 330K |
| 代理商： | I2040BF-08-SR |
November 2005
P2040B
rev 0.1
LCD Panel EMI Reduction IC
3 of 8
Notice: The information in this document is subject to change without notice.
Spread Spectrum Selection
Table 1 illustrates the possible spread spectrum options. The optimal setting should minimize system EMI to the fullest
without affecting system performance. The spreading is described as a percentage deviation of the center frequency (Note:
the center frequency is the frequency of the external reference input on CLKIN, Pin 1).
Example: P2040B is designed for high resolution flat panel applications and is able to support panel frequencies from
30MHz to 100MHz. For a 65MHz pixel clock frequency, a spreading selection of CP0 = 0,CP1=1 and SR0=1 gives a
percentage deviation of +/-1.56% (see Table 1). This results in frequency on ModOUT being swept from 64.5MHz to
65.5MHz. This particular example given here is a common EMI reduction method for notebook LCD panel and has already
been implemented by most of the leading OEM and mobile graphic accelerator manufacturers.
Application Schematic for Mobile LCD Graphics Controllers
Absolute Maximum Ratings
Symbol
Parameter
Rating
Unit
VDD, VIN
Voltage on any pin with respect to Ground
-0.5 to +7.0
V
TSTG
Storage temperature
-65 to +125
°C
TA
Operating temperature
-40 to +85
°C
Ts
Max. Soldering Temperature (10 sec)
260
°C
TJ
Junction Temperature
150
°C
TDV
Static Discharge Voltage
(As per JEDEC STD22- A114-B)
2
KV
Note: These are stress ratings only and are not implied for functional use. Exposure to absolute maximum ratings for prolonged periods of time may affect
device reliability.
P2040B
CLKIN
CP0
SR0
SSON#
CP1
VSS
ModOUT
1
2
3
4
5
6
7
8
VDD
Digital control for SS
enable or disable
0.1 F
Modulation 65MHz signal
with +/- 1.56% Deviation
and Modulation Rate of
101.54 KHz. This signal is
connected back to the
Spread Spectrum input
Pin (SSIN) of the
Graphics Accelerator.
65MHz from Graphics
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相关代理商/技术参数 |
参数描述 |
|---|---|
| I2040BF-08-ST | 制造商:PULSECORE 制造商全称:PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BF-08-TR | 制造商:PULSECORE 制造商全称:PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BF-08-TT | 制造商:PULSECORE 制造商全称:PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BG-08-SR | 制造商:PULSECORE 制造商全称:PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
| I2040BG-08-ST | 制造商:PULSECORE 制造商全称:PulseCore Semiconductor 功能描述:LCD Panel EMI Reduction IC |
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