Bluetooth Class-1 Modules With Low Power Consumption

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  • Author: Oleksandr Gorbachov
One of the most popular wireless personal area netOne of the most popular wireless personal area networks (WPAN) technologies is the well-known Bluetooth Standard. While use of Bluetooth is widespread for different applications, there is a growing need for longer communication links, which require higher output power. Class-3 and class-2 Bluetooth chips are popular in the market with about 0 dBm and 4 dBm maximum transmit (TX) power respectively, which is enough for a link in the range of 10 meters or more. The standard also allows class-1 operation with 20 dBm power at the antenna connector. Link range in this case can be extended up to several tens or even hundreds of meters. Certainly, an external PA is needed for that. As we move to more mobile and handmum transmit (TX) power respectively, which is enough for a link in the range of 10 meters or more. The standard also allows class-1 operation with 20 dBm power at the antenna connector. Link range in this case can be extended up to several tens or even hundreds of meters. Certainly, an external PA is needed for that. As we move to more mobile and handheld applications, with more functions using the same device battery, power saving technologies become very important. Bluetooth 3.0, with higher data rates, has even more stringent requirements.