A 4-layer PCB with a solid ground plane and a separate power plane is recommended. Keep the RF traces as short as possible and use 50-ohm impedance matching to minimize signal reflections.
Use the lowest possible voltage supply (1.8V) and adjust the transmit power to the minimum required for your application. Enable power-saving modes like sleep mode and adaptive frequency hopping to reduce power consumption.
The maximum data transfer rate is 2 Mbps, but this can be affected by factors like distance, interference, and device capabilities. In practice, a data transfer rate of 1 Mbps is more commonly achieved.
Use the built-in encryption and authentication mechanisms, such as AES-128 and SHA-256, to secure data transmission. Implement secure pairing and bonding procedures to ensure trusted connections.
The maximum range is approximately 100 meters (330 feet) in open air, but this can be affected by factors like obstacles, interference, and device orientation. In practice, a range of 50-70 meters is more commonly achieved.
BT131-800D datasheet
by NXP Semiconductors
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