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參數(shù)資料
| 型號： | PI6C3420ATE |
| 廠商： | Pericom Semiconductor Corp. |
| 英文描述： | 27 MHz Spread Spectrum Clock Synthesizer |
| 中文描述： | 27兆赫擴(kuò)頻時(shí)鐘合成器 |
| 文件頁數(shù)： | 4/5頁 |
| 文件大?。?/td> | 420K |
| 代理商： | PI6C3420ATE |
4
PS8848B 08/29/06
PI6C3420A
27 MHz Spread Spectrum
Clock Synthesizer
Reference circuit for graphic chipset application
(1-4)
Application Information
Crystal Load Capacitors
If a crystal is used with the device, the external trim capacitors C
Ltrim
are used to adjust the effective capacitance to match the
required crystal load capacitance. The C
Ltrim
value can be derived from formula C
Ltrim
= 2*C
L
– (Cs + Ci). Typical C
Ltrim
= 28pF
when crystal load = 18pF, stray capacitance C
s
= 3pF and XTAL pins capacitance = 5pF.
C
Ltrim
C
Ltrim
Xtal
6
1
Notes:
1. PI6C3420A can accept a 14.31818MHz reference clock or crystal clock.
2. Power supply pin decoupling capacitors should be placed as close as possible to VDD pin. Via's at the VDD pin should be avoided.
3. Spread select pin's (S0 and S1):
Pin 3 (27M_SSC/S0) and Pin 6 (X2/S1) provide logic state strapping function. When strapping resistor connects to VDD, S0 and S1 are
set to logic HIGH. When strapping resistor connects to Ground, S0 or S1 will set to logic LOW.
4. Refer to "Spread Spectrum Selection Table", for more details on the strapping logic.
Strapping to high
V
DD
V
DD
5
2
3,6
0.1μF 0.01μF
Strapping to low
V
DD
5
2
3,6
0.1μF 0.01μF
Recommended Crystal Specification
Pericom recommends: SRX7316-E Crystal for optimum performance.
Parameter
Mode of oscillation, and cut
Frequency
Frequency tolerance
Tempurature
Load Cap
Equivalent series resistance
Drive to level
Aging Stability
Size = Length x Width x Height
Value
Units
Fundamental AT
14.318
±20
±30
18
40
100
±5
MHz
PPM
PPM
pF
μW
PPM/YR
mm(inch)
11.18(.440) x 4.65(.183) x 13.46(.530)
Note:
Pericom's SRX7316-E - 14.318 MHz
series resonant crystal is recommended.
06-0278
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| PI6C3421-1TEX | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 27 MHz Spread Spectrum Clock RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| PI6C3421A | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:27MHz Spread Spectrum Clock Synthesizer |
| PI6C3421ATEX | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 Clock Synthesizer 27 MHz RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| PI6C3450TEX | 功能描述:時(shí)鐘合成器/抖動(dòng)清除器 DLDSpread Spectrum Clock Synth RoHS:否 制造商:Skyworks Solutions, Inc. 輸出端數(shù)量: 輸出電平: 最大輸出頻率: 輸入電平: 最大輸入頻率:6.1 GHz 電源電壓-最大:3.3 V 電源電壓-最小:2.7 V 封裝 / 箱體:TSSOP-28 封裝:Reel |
| PI6C3503 | 制造商:PERICOM 制造商全稱:Pericom Semiconductor Corporation 功能描述:Low Power Spread Spectrum Frequency Multiplier |
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