CC1110-CC1111: CC1111 Temperature Range

Leo Hendrawan

Part Number: CC1110-CC1111

Team,

A customer is planning to use CC1111 but they need -40 to +85°C temperature range support. According to this thread, it should be possible to treat CC1111 as CC1110 if USB is not used. However, they need the USB at room temperature to do the commissioning/first time configuration. Will this work?

Which crystal frequency they need to use? still 48 MHz as standard for CC1111? or 26/27? I guess 48 MHz is needed for clocking the USB interface.

Thanks.

over 8 years ago

0 Sverre over 8 years ago

TI__Mastermind 39860 points

Leo,

For the CC1111 to work you need a 48 MHz crystal. This is needed for the USB block. The rest of the sub-modules run off a 24 MHz clock (=crystal frequency / 2). In the thread you referred to I wrote that if you are not using the USB you can assume the same temperature and voltage ranges for CC1111 as for CC1110. I now have second thoughts about this as the IF-ADC will have low oversampling with a 24 MHz system clock. This could potentially lead to instability at cold temperatures. We have not done measurements to say whether this is a real problem or not so I am merely raising this as a concern.

0 Leo Hendrawan over 8 years ago in reply to Sverre

TI__Guru 56650 points

Thanks, Sverre.

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CC1110-CC1111: CC1111 Temperature Range