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參數(shù)資料
| 型號： | S1M8836X01-G0T0 |
| 元件分類： | PLL合成/DDS/VCOs |
| 英文描述： | PLL FREQUENCY SYNTHESIZER, 1000 MHz, CQCC24 |
| 封裝： | 3.50 X 4.50 MM, QFN-24 |
| 文件頁數(shù)： | 21/29頁 |
| 文件大?。?/td> | 234K |
| 代理商： | S1M8836X01-G0T0 |
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FRACTIONAL-N RF/INTEGER-N IF DUAL PLL
S1M8836/37
28
PCB LAYOUT GUIDE
In doing PCB layouts for S1M8836/37, we recommend that you apply the following design guide to your
handsets, thus improving the phase noise and reference spurious performances of the phones.
1.
The S1M8836/37 has external four power supply pins to supply on-chip bias, each for analog and digital
blocks of RF and IF PLLs. Basically in doing PCB layout, it is important that power supply lines should be
separated from one another and thus coupling noises through the voltage supply lines can be minimized. If
you have some troubles with the direction to separate, you can choose the following recommendations for
your convenience;
Tying analog power lines, V
DDRF and VDDIF, is possible.
Tying digital power lines, V
P1 and VP2, is possible.
A point connecting the analog and digital power lines should be near to battery line as close as possible.
It minimizes coupling noise effects from a digital switching noise into analog blocks. We also
recommend that a passive RC low pass filter(R(22
),C(100nF)) be utilized for suppressing high
frequency noise on the analog power supply line and reducing any digital noise couplings.
2.
VCO power lines should be well separated from those of PLL because VCO is generally a very sensitive
device from power line noises and PLL is a digital noise generator.
3.
For more improvement of reference spurious performance, it is recommended that the LPF ground be tied to
the PLL ground, not the VCO ground.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| S1M8837 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| S1M8837X01-G0T0 | 制造商:SAMSUNG 制造商全稱:Samsung semiconductor 功能描述:FRACTIONAL-N RF/INTEGER-N IF DUAL PLL |
| S1MA | 制造商:VISHAY 制造商全稱:Vishay Siliconix 功能描述:Standard Surface Mount Glass Passivated Rectifier |
| S1MA-E3/5AT | 功能描述:整流器 1.0 Amp 1000 Volt 30A IFSM @ 8.3ms RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel |
| S1MA-E3/61T | 功能描述:整流器 1.0 Amp 1000 Volt RoHS:否 制造商:Vishay Semiconductors 產(chǎn)品:Standard Recovery Rectifiers 配置: 反向電壓:100 V 正向電壓下降: 恢復(fù)時間:1.2 us 正向連續(xù)電流:2 A 最大浪涌電流:35 A 反向電流 IR:5 uA 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DO-221AC 封裝:Reel |
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