MC33492 Datasheet, PDF (9/16 Pages) Motorola, Inc – PLL Tuned UHF Transmitter for Data Transfer Applications

Freescale S^Me^Cm³³ic⁴⁹o²nductor, Inc.
RF OUTPUT SPECTRUM
Following are spectrums of transmitter carrier, measured in conduction. Three different spans have been
used. The 5MHz span spectrum (figure 4) shows phase noise response close to the RF carrier, and the noise
suppression within the PLL loop bandwidth. The 50MHz span spectrum (figure 5) shows both phase noise and
reference spurious. Finally figure 6 shows second and third harmonics of carrier.
All these spectrums are measured in OOK modulation, at DATA=1.
Figure 4: RF spectrum at 434MHz frequency band displayed with a 5MHz span
Resolution
bandwidth:
100kHz
Resolution
bandwidth:
30kHz
For More Information On This Product,
PLL Tuned UHF T^Gra^ons^tm^o:it^wte^wr f^wor^.fD^ra^et^ea^sT^cr^aan^les^.f^cer^oA^mpplications
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