CC2640: Long range operation introduction

Not sure if I follow you: You ask about CC2640 but what you have put a red rectangle around is related to our sub 1-GHz offering (CC2640 is just 2.4 GHz)

You can use http://www.ti.com/tool/RF-RANGE-ESTIMATOR to estimate the potential range. 

Hi TER,

Thanks for your reply.

When I open the tool, this excel also corresponds to sub 1GHz. 

• When CC2640 works on long range mode, its operational frequency is 2.4GHz or 868MHz?

• Other question is as customer feedback, when open long range, the communication distance doesn't increase a lot.. Why?

Hi TER,

Sorry for my mistake.

Customer use CC2640R2F-Q1.

Is it different between cc2640 and cc2640r2F besides 275kB ROM?

It's important to give the full, correct, part number since since CC2640, CC2640R2F and CC2640R2F-Q does not support exactly the same. FOr CC2640R2F-Q1, this part only support 1 Mbps. Select this datarate when using the range estimator excel sheet. 

HI TER,

thanks for your reply. I have change the datarate as 1Mbps.

What about Frequency region? When operate on long range mode, which frequency do I need to select when using CC2640R2F-Q1?

As I have stated before, this chip only operate on 2.4 GHz and only on 1 Mbps. 

And this device does not have a specific long range mode. 

Hi TER,

The PN is CC2640R2F-Q1. I found in datasheet, it also don't support long range, right?

As for the excel,if the GPN is CC2640R2F-Q1, does “the select chip and datarate” need to choose "CC26x0-1Mbops" or other things?

When I choose "CC26x0-1Mbops", there are a lot of frequency(region) I could select, 868M,2.4G...Which one should I select?

Thanks!

As said, the chip only operate on 2.4 GHz meaning that you have to select this frequency. 

And yes, CC26x0 1 Mbps is the closest. The important is that you select a setting that gives the same sensitivity as in the datasheet for the mode you are using.