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EM Microelectronic's new CoolRF chip qualifies for Bluetooth V4.0

October 04, 2011 // Paul Buckley

EM Microelectronic's new CoolRF chip qualifies for Bluetooth V4.0

EM Microelectronic, the semiconductor company of the Swatch Group, has announced at the Bluetooth Technology Conference 2011 in Munich, Germany, the Bluetooth V4.0 qualification of its EM9301, the latest member of the company’s CoolRF circuits family.


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The EM9301 is a single-mode Master/Slave controller optimized for low voltage and low energy systems such as wireless sensors, wireless remote controls and wireless monitoring. With operating supply voltage as low as 0.8 V, the circuit allows applications to take advantage of a wide range of common single-cell batteries or of energy harvesters such as solar cells, piezo-electric and electro-magnetic elements.

The true low voltage design of the EM9301, combined with its ultra-low current consumption, confirms EM Microlectronic's leadership in providing lowest power solutions on the market. Interfaced with a 8051-based application controller from the market, this CoolRF circuit offers the industry's most energy-efficient solution for a Bluetooth low energy application.

EM9301 Bluetooth low energy solutions are typically tailored for portable applications requiring both low voltage and low energy connection types. In receive mode, the circuit requires only 16.5 mA peak current from physical layer to application layer. Under the same operating conditions, competing products consume up to 2 3mA peak current from physical layer to host interface only. With its integrated DC/DC converter, the circuit is capable of operating the RF functions while delivering up to 100 mA to an external device. When the Bluetooth low energy connection is not required, the system power budget can be optimized by setting the sleep or idle mode in which the circuit itself consumes less than 1.0 uA.
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