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參數(shù)資料
| 型號： | I2781AG-08ST |
| 元件分類： | 時(shí)鐘產(chǎn)生/分配 |
| 英文描述： | 78 MHz, OTHER CLOCK GENERATOR, PDSO8 |
| 封裝： | GREEN, SOIC-8 |
| 文件頁數(shù)： | 4/11頁 |
| 文件大?。?/td> | 384K |
| 代理商： | I2781AG-08ST |
P2781/82/84
Rev. 2 | Page 2 of 11 | www.onsemi.com
Pin Configuration
Pin Description (P278xA)
Pin#
Pin Name
Type
Description
1
XIN / CLKIN
I
Connect to crystal or clock input. This pin has dual functions. It can be connected
either to an external crystal or an external reference clock.
2
XOUT
O
Crystal connection. If using an external reference, this pin must be left
unconnected.
3
FS1
I
Digital logic input used to select input frequency range (see the Input Frequency
Selection Table). This pin has an internal pull-up resistor.
4
LF
I
External Loop Filter for the PLL. By changing the value of the CRC circuit, the
percentage spread can be adjusted accordingly. See the Loop Filter Selection
Table for detail value.
5
VSS
I
Ground Connection. Connect to system ground.
6
ModOUT
O
Spread Spectrum Clock Output.
7
FS0
I
Digital logic input used to select input frequency range (see the Input Frequency
Selection Table). This pin has an internal pull-up resistor.
8
VDD
P
Connect to +3.3V.
Input Frequency Selection Table
FS1
FS0
Input (MHz)
Output Frequency Scaling (MHz)
Modulation Rate (KHz)
P2781A
P2782A
P2784A
0
3 to 9
6 to 18
12 to 36
Fin / 128
0
1
10 to 19
20 to 38
40 to 76
Fin / 256
1
0
20 to 38
40 to 76
80 to 152
Fin / 512
1
39 to 78
78 to 156
156 to 312
Fin / 1024
Standard pin Configuration offered in both
8-pin SOIC and TSSOP Packages.
FS1
LF
FS0
VDD
VSS
1
2
3
4
5
6
7
8
P278xA
XIN / CLKIN
ModOUT
XOUT
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| I2784A-08SR | 312 MHz, OTHER CLOCK GENERATOR, PDSO8 |
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| I2781AG-08TR | 制造商:PULSECORE 制造商全稱:PulseCore Semiconductor 功能描述:General Purpose EMI Reduction IC |
| I2781AG-08TT | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:General Purpose EMI Reduction IC |
| I2782A-08SR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:General Purpose EMI Reduction IC |
| I2782A-08ST | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:General Purpose EMI Reduction IC |
| I2782A-08TR | 制造商:ALSC 制造商全稱:Alliance Semiconductor Corporation 功能描述:General Purpose EMI Reduction IC |
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