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參數(shù)資料
| 型號： | MAX9491ETP |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | XO, clock |
| 英文描述： | Factory-Programmable, Single PLL Clock Generator |
| 中文描述： | 200 MHz, OTHER CLOCK GENERATOR, QCC20 |
| 封裝： | 5 X 5 MM, 0.8 MM HEIGHT, MO-220WHHC, TQFN-20 |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 306K |
| 代理商： | MAX9491ETP |
M
Factory Programmable Single PLL
Clock Generator
_______________________________________________________________________________________
7
should be less than 10pF, including board parasitic
capacitance. To achieve up to
±
200ppm pullability, make
sure the crystal-loading capacitance is less than 14pF.
The VCXO is a free-running oscillator. It starts oscillating
with an internal POR signal and can be disabled by
PD
.
When VCXO is not used, connect TUNE to V
DD
.
Applications Information
Using an Input Clock as the Reference
When an input clock is used as the reference, connect
the input clock to X1, leave X2 unconnected, and connect
TUNE to V
DD
.
Crystal Selection
When using a crystal with the MAX9491’s internal oscil-
lator, connect the crystal to X1 and X2. Choose an AT-
cut crystal that oscillates on its fundamental mode with
±30ppm and loading capacitance less than 14pF. To
achieve a wide VCXO tuning range, select a crystal
with motional capacitance greater than 7fF and con-
nect 6pF or less shunt capacitors at both X1 and X2 to
ground. When the VCXO is used as an oscillator, select
both shunt capacitors to approximately 13pF. The opti-
mal shunt capacitors for achieving minimum frequency
offset can be determined experimentally.
27.0405
26.99595
-150ppm
3V
V
TUNE
0
+150ppm
27.00
V
(
Figure 1. VCXO Tuning Range for a 27MHz Crystal
V
DD
2.2V
CLK_OUT
t
CLK_IN
PD
t
PO2
t
PO1
Figure 2. PLL Settling Time
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX9491ETP010 | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX9491ETP010+ | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Factory-Prog Single PLL Clock Generator RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX9491ETP010+T | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 Factory-Prog Single PLL Clock Generator RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX9491ETP010-T | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
| MAX9491ETP045 | 功能描述:時鐘發(fā)生器及支持產(chǎn)品 RoHS:否 制造商:Silicon Labs 類型:Clock Generators 最大輸入頻率:14.318 MHz 最大輸出頻率:166 MHz 輸出端數(shù)量:16 占空比 - 最大:55 % 工作電源電壓:3.3 V 工作電源電流:1 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-56 |
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