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參數(shù)資料
| 型號： | LMX2314 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | 1.2 GHz Frequency Synthesizer for RF Personal Communications |
| 中文描述： | 1.2千兆赫頻率合成射頻個人通信 |
| 文件頁數(shù)： | 12/20頁 |
| 文件大?。?/td> | 371K |
| 代理商： | LMX2314 |
Analog Switch (2315 only)
The analog switch is useful for radio systems that utilize a frequency scanning mode and a narrow band mode. The purpose of
the analog switch is to decrease the loop filter time constant, allowing the VCO to adjust to its new frequency in a shorter
amount of time. This is achieved by adding another filter stage in parallel. The output of the charge pump is normally through the
D
o
pin, but when LE is set HIGH, the charge pump output also becomes available at BISW. A typical circuit is shown below. The
second filter stage (LPF-2) is effective only when the switch is closed (in the scanning mode).
TL/W/11766–11
Typical Crystal Oscillator Circuit
A typical circuit which can be used to implement a crystal
oscillator is shown below.
TL/W/11766–12
Typical Lock Detect Circuit
A lock detect circuit is needed in order to provide a steady
LOW signal when the PLL is in the locked state. A typical
circuit is shown below.
TL/W/11766–13
12
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| LMX2314M | 1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2314MX | 1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2315 | Frequency Synthesizer for RF Personal Communications |
| LMX2315TM | Frequency Synthesizer for RF Personal Communications |
| LMX2315TMX | Frequency Synthesizer for RF Personal Communications |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| LMX2314M | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2314MX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2315 | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.2 GHz Frequency Synthesizer for RF Personal Communications |
| LMX2315D WAF | 制造商:Texas Instruments 功能描述: |
| LMX2315TM | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:1.2 GHz Frequency Synthesizer for RF Personal Communications |
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