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參數(shù)資料
| 型號： | LMX5080 |
| 廠商： | National Semiconductor Corporation |
| 英文描述： | PLLatinum⑩ 2.7 GHz Low Power Dual Modulus Prescaler for RF Personal Communications |
| 中文描述： | PLLatinum⑩射頻個人通信的2.7GHz低功耗雙模預(yù)分頻器 |
| 文件頁數(shù)： | 4/7頁 |
| 文件大小： | 99K |
| 代理商： | LMX5080 |
Functional Description
The basic phase-lock-loop (PLL) configuration using an ex-
ternal prescaler consists of a high-stability crystal reference
oscillator, a prescaler such as the National Semiconductor
LMX5080, a low frequency synthesizer, a voltage controlled
oscillator (VCO), and a loop filter. The frequency synthesizer
typically includes programmable reference [R] and feedback
[N] frequency dividers, a phase detector, as well as a charge
pump. The MC signal is fed back to the prescaler from either
Block Diagram
the low frequency synthesizer, or a controller to set the pres-
caler divide ratio to N or N+2. The prescaler output fre-
quency is established by dividing the VCO signal down via
the prescaler modulus. The RF inputs to the prescalar con-
sist of the Fin and /Fin input pins which are complementary
inputs to a differential pair amplifier. This configuration can
operate to 2 GHz with an input sensitivity of 15 dBm.
DS100940-3
www.national.com
4
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
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| LMX5080M | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ 2.7 GHz Low Power Dual Modulus Prescaler for RF Personal Communications |
| LMX5080MX | 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinum⑩ 2.7 GHz Low Power Dual Modulus Prescaler for RF Personal Communications |
| LMX5251SQX/NOPB | 功能描述:射頻收發(fā)器 RoHS:否 制造商:Atmel 頻率范圍:2322 MHz to 2527 MHz 最大數(shù)據(jù)速率:2000 Kbps 調(diào)制格式:OQPSK 輸出功率:4 dBm 類型: 工作電源電壓:1.8 V to 3.6 V 最大工作溫度:+ 85 C 接口類型:SPI 封裝 / 箱體:QFN-32 封裝:Tray |
| LMX5252LQ/HALF | 制造商:Texas Instruments 功能描述: |
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