LMX2571: Analog input signal problem

WU YISYUAN

Part Number: LMX2571

Hi,

Regarding the problem of using the LMX2571 for the transmitter of the wireless microphone,
the audio signal is analog.
can the audio signal be modulated to the Internal VCO in the 2571,
Is it possible to do it?
If yes, how to do it?

thanks.

over 7 years ago

0 Dean Banerjee over 7 years ago

TI__Mastermind 28011 points

1300.LMX2571 FSK Modulation_sept2014.pptxWu,

Yes, this can be done using the FSK pins and is outlined in section 7.3.13 in the datasheet. You can either use simple FSK, or you can program the FSK pins to form Gaussian modulation. You might find the attached example helpful.

Regards,

Dean

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LMX2571: Analog input signal problem