Radio Versions

The right radio, for the right job.

Operating in the 2.4GHz unlicensed industrial, scientific, and medical (ISM) frequency band, Bluetooth® technology supports multiple radio options that enable developers to build products meeting the unique connectivity requirements of their market.

Whether a product streams high-quality audio between a smartphone and speaker, transfers data between a tablet and medical device, or sends messages between thousands of nodes in a building automation solution, the Bluetooth Low Energy (LE) and Basic Rate/Enhanced Data Rate (BR/EDR) radios are designed to meet the unique needs of developers worldwide.





Bluetooth Low Energy (LE)

The Bluetooth Low Energy (LE) radio is designed for very low power operation, and is optimized for data transfer solutions. To enable reliable operation in the 2.4 GHz frequency band, it leverages a robust Adaptive Frequency Hopping approach that transmits data over 40 channels. The Bluetooth LE radio provides developers a tremendous amount of flexibility, including multiple PHY options that support data rates from 125 Kb/s to 2 Mb/s, as well as multiple power levels—from 1mW to 100 mW. It also supports security options up to government grade, as well as multiple network topologies, including point-to-point, broadcast, and mesh.




Bluetooth Basic Rate/Enhanced Data Rate (BR/EDR)

The Bluetooth BR/EDR radio is designed for low power operation and is optimized for data streaming applications, such as wireless audio. It too leverages a robust Adaptive Frequency Hopping approach, transmitting data over 79 channels. The Bluetooth BR/EDR radio includes multiple PHY options that support data rates from 1 Mb/s to 3 Mb/s, as well as multiple power levels—from 1mW to 100 mW. It also supports multiple security options and a point-to-point network topology.

  Bluetooth Low Energy (LE) Bluetooth Basic Rate/
Enhanced Data Rate (BR/EDR)
Optimized For... Short burst data transmission Continuous data streaming
Frequency Band 2.4 GHz (2.402 GHz to 2.480 GHz) 2.4 GHz (2.402 GHz to 2.480 GHz)
Channels 40 channels with 2 MHz spacing
(3 advertising channels/37 data channels)
79 channels with 1 MHz spacing
Channel Usage Adaptive Frequency Hopping (AFH)
1600 hops/sec
Adaptive Frequency Hopping (AFH)
1600 hops/sec
Modulation GFSK GFSK, π/4 DQPSK, 8DPSK
Power Consumption ~0.01x to 0.5x of reference
(depending on use case)
1 (reference value)
Data Rate LE 2M PHY: 2 Mb/s
LE 1M PHY: 1 Mb/s
LE Coded PHY (S=2): 500 Kb/s
LE Coded PHY (S=8): 125 Kb/s
EDR PHY (8DPSK): 3 Mb/s
EDR PHY (π/4 DQPSK): 2 Mb/s
BR PHY (GFSK): 1 Mb/s
Max Tx Power* Class 1: 100 mW (+20 dBm)
Class 1.5: 10 mW (+10 dbm)
Class 2: 2.5 mW (+4 dBm)
Class 3: 1 mW (0 dBm)
Class 1: 100 mW (+20 dBm)
Class 2: 2.5 mW (+4 dBm)
Class 3: 1 mW (0 dBm)
Network Topologies Point-to-Point (including piconet)
Broadcast
Mesh
Point-to-Point (including piconet)

* Devices shall not exceed the maximum allowed transmit power levels set by the regulatory bodies that have jurisdiction over the locales in which the device is to be sold or intended to operate. Implementers should be aware that the maximum transmit power level permitted under a given set of regulations might not be the same for all modulation modes.


FEATURED RESOURCE

Bluetooth Core Specification

DOWNLOAD