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Bluetooth low energy SoC targets smart sensor apps

Posted: 20 Jan 2012 ?? ?Print Version ?Bookmark and Share

Keywords:Bluetooth low energy? SoC? smart sensor?

Texas Instruments Inc. (TI) has rolled out its Bluetooth low energy system-on-chip (SoC) designed for Bluetooth smart sensor applications for consumer medical, sports and fitness, security, entertainment and home automation. The CC2541 claims to cut power consumption by 33 per cent compared to TI's previous-generation CC2540 SoC-as observed while transmitting at 1mW output power-but still delivers excellent RF performance.

The CC2541 is pin-to-pin compatible with the CC2540, which allows manufacturers to take advantage of the power savings through an easy migration of existing designs. An associated CC2541EMK development kit will also be available for new Bluetooth smart devices. The six sensors included in the kit enable applications such as tag trackers, thermostats, weather stations, theft alarms, remote controls and others that can be controlled by a consumer's smartphone.

CC2541

The CC2541 claims to increase device battery life by 33 per cent.

TI's 2.4GHz CC2541 Bluetooth low energy solution offers early realization of low-power and single-mode Bluetooth low energy sensor applications. The device boasts a simple design with one-chip, with a controller, host and application on a single device. Applications can be written directly onto the CC2541 that supports both analog and digital peripherals.

The product is Flash-based, allowing firmware to be updated in the field and persistent data can be stored on-chip. It is also pin-for-pin compatible with TI's CC253x ZigBee RF4CE solutions. Likewise, it supports Bluetooth version 4.0 and proprietary modes at 250Kb/s, 500Kb/s, 1Mb/s and 2Mb/s.

According to TI, the device enables design of low power sensor devices that can operate for more than one year on a coin cell battery18.5mA TX current at 0dBm. The device touts up to 99dB link budget and best-in-class coexistence with other 2.4GHz devices, added TI.

The CC2541 SoC is sampling to lead customers and will go in volume production in February. It is packaged in a ROHS-compliant, 6 x 6mm QFN-40. The corresponding CC2541EMK will be available in late January on TI's eStore for $99 and through TI authorized distributors. The CC2541DK-SENSOR development kit will be available in early 2Q12.





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