what are the advantages of using the CC2530+CC2591 vs just the CC2530?
CC2591 is just an amplifier, so improves the range
HI @Ned, thanks for the information!
Just bear in mind that to be useful, both ends of the radio link need the radio “amplifier”. Having a CC2530 + CC2591 as your coordinator doesn’t help that much if it’s talking to end devices, which all have normal, low powered transmitters.
To put it another way: if you’re 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 don’t, it’ll 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 ‘shout louder’ and also has ‘better hearing’ 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 × 4-mm QFN-16 package. The device contains PA, LNA, switches, RF-matching, and balun for simple design of high-performance wireless applications.
Thanks that Hijinx, I stand corrected. My experience with “range extenders” in the past has been that they’re great - as long as every node has one.
I might have to get one of these and have a play with it.
@Hijinx Thanks for clarification!