參數(shù)資料
型號： LMX15010AM
廠商： National Semiconductor Corporation
英文描述： 1.1 GHz Frequency Synthesizer for RF Personal Communications(367.82 k)
中文描述： 1.1千兆赫頻率合成射頻個人通信（367.82十一）
文件頁數(shù)： 18/22頁
文件大?。?/td> 367K
代理商： LMX15010AM
Application Information
(Continued)
TL/W/12340–43
FIGURE 5. PLL Reference Spurs
The reference spurious level is
k
b
66 dBc, due to the loop
filter attenuation and the low spurious noise level of the
LMX1511.
TL/W/12340–45
FIGURE 6. PLL Phase Noise 3.5 kHz Offset
The phase noise level at 3 kHz offset is
b
65 dBc/Hz.
TL/W/12340–44
FIGURE 7. PLL Phase Noise
@
150 Hz Offset
The phase noise level at 150 Hz offset is
b
75.5 dBc/Hz.
TL/W/12340–42
FIGURE 8. Frequency Jump Lock Time
Of concern in any PLL loop filter design is the time it takes
to lock in to a new frequency when switching channels.Fig-
ure 8 shows the switching waveforms for a frequency jump
of 857 MHz–915 MHz. By narrowing the frequency span of
the HP53310A Modulation Domain Analyzer enables evalu-
ation of the frequency lock time to within
g
1 kHz. The lock
time is seen to be
k
1.6 ms for a frequency jump of 58 MHz.
18
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LMX1501A 制造商:NSC 制造商全稱:National Semiconductor 功能描述:PLLatinumTM 1.1 GHz Frequency Synthesizer for RF Personal Communications
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