Other Parts Discussed in Thread: CC2591, Z-STACK, CC2590
hello:
The customer's organic ceiling light product is using TI's ZigBee chip CC2530 for wireless networking. The specific circuit schematic diagram is as follows:
The PA used in the circuit scheme is RFX2401C.
The specific problems that occur are:
About one-third of the 200 sets of products in mass production have the problem of unsuccessful connection of high-frequency channels (10-15).
The connection of low-frequency channels (01-09) is basically normal.
By analyzing problematic products, it was found that with the same parameter configuration, these products were unable to emit signals during abnormal channels.
Later, we accidentally discovered that if we lower the internal transmission power configuration of CC2530 (from 2.5dB to -8dB) for these problematic products,
Products with abnormal issues can send signals to achieve successful connection. Alternatively, by setting PA 2401C to a continuous receive mode, the connection can also be successful.
It seems that the above methods have solved the connection problem, but these two methods sacrifice transmission power from the working principle, resulting in a decrease in communication distance and other defects.
In summary, I have the following questions. Could you please help me analyze them
What may be the root cause of unsuccessful connection and inability to send a signal? Is there an unreasonable aspect to the RF circuit design or the software configuration of CC2530?
Is there a good solution that can simultaneously solve the connection and communication distance?
