Hi all,
what are the advantages of using the CC2530+CC2591 vs just the CC2530?
Thanks!
CC2591 is just an amplifier, so improves the range
Just bear in mind that to be useful, both ends of the radio link need the radio âamplifierâ. Having a CC2530 + CC2591 as your coordinator doesnât help that much if itâs talking to end devices, which all have normal, low powered transmitters.
To put it another way: if youâre trying to have a conversation with someone who is 200m away (out of earshot for someone shouting) and you have a megaphone (loud hailer) and they donât, itâll be a very one-sided conversation.
The cc2591 is a full RF front end.
It has an amp on both tx and rx and hence is able to âshout louderâ and also has âbetter hearingâ due to the lna. This is unlike adding a high gain antenna which IS just shouting louder. From ti site:
CC2591 is a cost-effective and high-performance RF front end for low-power and low-voltage 2.4-GHz wireless applications. The device is a range extender for all existing and future 2.4-GHz low-power RF transceivers, transmitters, and System-on-Chip products from TI. CC2591 increases the link budget by providing a power amplifier for increased output power, and an LNA with low noise figure for improved receiver sensitivity. The device provides a small size, high output power RF design with its 4-mm Ă 4-mm QFN-16 package. The device contains PA, LNA, switches, RF-matching, and balun for simple design of high-performance wireless applications.
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What @Hijinx said is right, it has an LNA so can listen better as well as shout louder. @Shred is wrong in this case
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Thanks that Hijinx, I stand corrected. My experience with ârange extendersâ in the past has been that theyâre great - as long as every node has one.
I might have to get one of these and have a play with it.
in my experience the 2530/2591 has a worse range then cc2531. Maybe i have a faulty unit, but its vcertainly not better here
Are you using one of the cheap Chinese SMA antennas? Using a decent quality antenna makes a big difference in my experience. I donât have the details in front of me, but RS Components make some excellent antennas that can significantly improve performance.
I recently replaced a 2531 router with a 2530/2591. Both have external antennae. Made a significant difference in link quality. Before 0-30, now consistently around 80-90. Even the China plug thatâs about 15m away and has two walls in the way (US-style sheetrock/frame walls).
My coordinator is a 2652RB, though.
does it make a difference if you add different antenna to cc2530+cc2591 as in - is it then more power hungry? thanks