CC1200: cc1200 Frequency error

Lina Wang

Part Number: CC1200

hi sir,

my customer want to know what is allowable the biggest Frequency error for CC1200 in the FSK Mode, we can't find any data in the Spec, thanks.

over 8 years ago

0 Sverre over 8 years ago

TI__Mastermind 39860 points

There is not a single answer to this as the frequency tolerance depends on the data rate, frequency deviation and RX filter BW.

You can estimate the TX signal BW (SBW) by using Carson's rule: SBW = 2 x deviation + symbol rate

The RX filter BW needs to be wide enough to fit SBW and also account for frequency error. Assuming the frequency error can drift in opposite directions the RX filter BW > SBW + 4 x RF_frequency (MHz) x Crystal error (ppm)

0 Lina Wang over 8 years ago in reply to Sverre

Intellectual 960 points

Thanks sir.

Sub-1 GHz

Sub-1 GHz forum

CC1200: cc1200 Frequency error