Will there be a CC1101 + CC1190 Reference Design? If not, how would you recommend reconciling the fact that the CC1190 ref. design is a 62mil, four-layer PCB and the CC1101 ref. design is a 31mil, two-layer design? For my CC2500 + CC2591 design, I followed the CC2591 ref. design and 'tweaked' (slightly) the CC2500 ref. design to accommodate the four-layer PCB, under the assumption that the TLIs and other PCB features were more critical to the CC2591 operation than for the CC2500. Any other suggestions? I have a VNA and other equipment available, but without the relevant impedance specs for the individual power and ground pins I'm left to 'guess' as to what the part needs. Only other option would be to dissassemble and characterize one of the eval. modules built to the ref. design. Not something I really want (or wanted) to do.
The curved line has no other purpose than connecting the CC1101 and CC1190 together and keep the original CC1101 reference design unchanged. It doesn't mather whether it is curved or not.
Thaks again Marius
I have read AN094 and I found some issues that I would like to ask regarding the transmit parameters. AN094 says that output power is limited to 18 dBm in order to meet EN 300 220-1.
Are those 18 dBm measured after cc1101-cc1190 but before the antena or is it the output power radiated to air?
On the other hand, is there any way to increase the output power above 18 dBm ans still fulfill EN 300 220-1? In my project, I need more power due to distance requirements.
Thanks in advance.
The +18 dBm in AN094 are conducted measurements using a spectrum analyzer. If you use an antenna with gain in a given direction you need to lower the programmed output power accordingly. That is, under EN 300 220 the output power is a radiated measurement taking the antenna gain into account (i.e EIRP).
If you want to increase the output power above +18 dBm you need to use a transceiver/transmitter with lower phase noise than CC1101.
In my current design I'm plannig to use the cc430f5137 working in 869,400Mhz-869,650Mhz band in order to transmitt 500mW. I have some questions abaut the mac layer:
1. Is it possible modificate the available Ti-Mac @ 2.4Ghz @ 802.15.4 to made work it in the 869,400 Mhz band?
2. Could I change the same Ti-Mac 2.4Ghz for the Zigbee sub 1GHZ band?
Thanks in advance
CC430 uses the same radio as the CC1101 so the maximum output power is still limited to +18 dBm. This is mentioned on the front page of the app note.
Thanks for your hard work.
I have been studying CC1101-CC1190EM 869MHz but I actually want to use 868-868.6 MHz band.
Do I have to change any component from CC1101-CC1190EM 869MHz to improve performance?
In other post at this thread you said that there will be avaiable a report of how will be the performance of CC1101-CC1190EM 869MHz working at 868 Mhz. Is this file avaiable?
Thanks a lot.
Maximum output power in 868-868.6 MHz band is +14 dBm. CC1101 stand-alone can do +12 dBm so there is not too much to gain on the TX side by using CC1190. The sensitivity will of course be better when using CC1101+CC1190.
Reference design: http://focus.ti.com/docs/toolsw/folders/print/cc1101-cc1190em869rd.html. No need to change the component values.
For measurement results and design guidelines see AN094: http://focus.ti.com/lit/an/swra356/swra356.pdf
I copied the ref design cc1101+cc1190 into my layout, the distance we get is far away from what I have expected. It is slightly more than the CC1101 alone.
I have seen that radiocrafts is using the CC1110-F32 with a booster (I do not know the type) and they state in their datasheets 27db output power.
Is there a different (better phase noise) radio in the CC1110 to get the 27db ouput?
CC1110 is the same radio as CC1101. In sub-band g3, where max +27 dBm is allowed, CC1101+CC1190 can do +18 dBm. This will also be true for CC1110+CC1190.
Range should not be your first test. You have developed new HW, SW and probably done a antenna design. What is causing the poor range? HW, SW, antenna design? You have no way of knowing. Measure the conducted RX and TX performance separately first (with a good known SW, e.g SmartRF Studio). That is, disconnect the antenna and solder a semi-rigid coax to the antenna feedpoint. Measure conducted output power and sensitivity using a spectrum analyzer and RF signal generator respectively (for the latter, refer also to DN002 available from our web site) Check also the antenna peformance using a network analyzer (see DN001).
You can contact Radiocrafts directly if you have questions regarding they +27 dBm solution: email@example.com
I fully agree and range was not our first test. We use smartRF and a dev Kit from you. But the question is: If I can not achieve the allowed 27dbm with the CC1190 solution I will use another solution to get there and do all the necessary tests for this, otherwise I waste time because we need 27dbm.
The CC1101 works perfect for us and we switch to the CC1110 soon, but for a special product we do need more power.
All content and materials on this site are provided "as is". TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with regard to these materials, including but not limited to all implied warranties and conditions of merchantability, fitness for a particular purpose, title and non-infringement of any third party intellectual property right. TI and its respective suppliers and providers of content make no representations about the suitability of these materials for any purpose and disclaim all warranties and conditions with respect to these materials. No license, either express or implied, by estoppel or otherwise, is granted by TI. Use of the information on this site may require a license from a third party, or a license from TI.
TI is a global semiconductor design and manufacturing company. Innovate with 100,000+ analog ICs andembedded processors, along with software, tools and the industry’s largest sales/support staff.