CC1125 or CC1101+CC1190: which is best on RX?

Mirko Antonini

Other Parts Discussed in Thread: CC1125DK, CC1101, CC1125, CC1190, CC1120, CC1121

I am using CC430 as Tx and receiving with CC1101. The SmartRF Studio 38.4K@868Mhz suggestions works fine but we would need 4-5 dB more as link margin. We cannot modify TX, but we can operate on Rx side. I would prefer CC1101+CC1190 because the FW modification is minimal. Which is the best choice from the link budget point of view? Is there any AN on passing from CC1101 to CC1125? Do you have an evaluation board of CC1125 other than http://www.ti.com/tool/cc1125dk ? I would need only the CC1125 shield and not the whole kit.

Thanks

Mirko

over 11 years ago

0 Timothy Barr over 11 years ago

Genius 3370 points

The only complaint I have about the CC112x series parts vs the CC1101 is that they removed the channel register. So if you want to do frequency hopping you have to change the transceiver frequency, instead of just the channel.

0 TER over 11 years ago in reply to Timothy Barr

TI__Guru**** 317180 points

For 38.4 kbps:

CC1101: -104 dBm (

CC1101 + CC1190: -108 dBm

CC1120: -106 dBm

I would look into CC1121, for the datarate you are looking at you don't gain anything by looking at CC1125.

CC1120 has the same SPI interface as CC1101. We don't have a app note describing the transition but we have software examples that shows the basics. For kits. check http://www.ti.com/tool/cc1121emk-868-915

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CC1125 or CC1101+CC1190: which is best on RX?