Bluetooth smart controller

11 July 2012 Telecoms, Datacoms, Wireless, IoT

Optimised for ultra-low power wireless sensing, remote control and monitoring applications, the EM9301 from EM Microelectronic is a Bluetooth smart-qualified controller that operates on as little as 0,8 V.

It can be powered by a wide range of common single-cell batteries or energy harvesters such as solar cells, piezoelectric and electromagnetic elements.

The device is fully Bluetooth smart qualified for single-mode master and slave applications and combines the physical layer, link layer and host controller interface (HCI) layer. In receive mode, it requires only 16,5 mA. An integrated DC-DC converter powers the RF circuitry while concurrently delivering up to 100 mA to an external device (e.g. sensors, external microcontroller, LED indicators, or displays and driver circuits).

RF output power is programmable from +4 dBm to -20 dBm in six steps. The system power budget can be further optimised by putting the EM9301 in sleep or idle mode, where it consumes less than 1 μA. The overall bill of material and size can be reduced significantly by the proper design of a 200 Ω differential impedance PCB trace antenna, eliminating the need for matching, balun and antenna components.

The EM9301 is available in both die format and in a ROHS-compliant MLF-24 package. EM9301 device purchase includes a licence-free Bluetooth smart stack for 8051, ARM Cortex-M0 or -M3 cores.

For more information visit www.emmicroelectronic.com

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