CC2652RB: Temperature coefficient of Frequency

Jejomar Ildefonso

Part Number: CC2652RB

Hi Team,

Posting for our customer. May we request for the Temperature coefficient of Frequency (TCF) (in ppm/°C) of the BAW resonator integrated in the CC2652RB?

Thanks in advance!

Kind Regards,

Jejomar

over 4 years ago

+1 Alexis Crandall20 over 4 years ago

TI__Genius 15590 points

Hi Jejomar,

May I ask what the customer needs this information for?

The BAW resonator gets compensated in the Cortex®-M0 radio core for temperature and voltage variations to ensure ±40 ppm accuracy.

https://www.ti.com/lit/an/swra649/swra649.pdf

Thanks,

Alexis

0 KJ YONG over 4 years ago

Prodigy 10 points

If the resonator in Transmitter and Receiver drift in different direction, it will require ±30 ppm ?

+1 Rizwan Murji over 4 years ago in reply to KJ YONG

TI__Genius 12740 points

Hi KJ Yong,

It is not that the resonator will drift in a different direction for TX or RX, it is that the accuracy of the resonator can drift due to temperature, process, aging etc. Thus there is a +/-40PPM requirement on the resonator. Note that this matches the BLE specification.

As an example at 25C and time zero you make have the resonator with at +5 PPM of the desired frequency. then as temperature increase them will drift in one or the other direction. The key is that under the conditions you meet the PPM requirement.

Thanks,

Riz

Bluetooth®︎

Bluetooth forum

CC2652RB: Temperature coefficient of Frequency