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CC1101: Noise in Async mode RX without TX connected

Javier Vargas Garcia
Prodigy 110 points
Part Number: CC1101

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Hello, 
I have configured the module to receive in asynchronous mode with OOK coding, it works perfectly, but when I disconnect the transmitter TX, I receive noise by GDO0, as soon as I connect it there is no problem, is it normal? It can be avoided?

Thank you!
  • 0
    TI__Guru**** 317180 points
    When you operate in async mode the digital output on GDO0 will toggle even with very low input signals. You can use Carrier Sense Threshold in addition to know when the input is above a given threshold and therefore can be decoded.