The TC35681IFTG-002 from Toshiba is a Bluetooth Low Energy IC developed for automotive applications. This device has been developed to operate in demanding automotive environments, as it delivers a wide operating temperature range, high RF transmission power and high RF reception sensitivity (a link budget of 113 dB @125 kbps at long range transmission).

The C35681IFTG contains both analog RF and baseband digital parts to provide a complete solution on a single chip. In addition to the basic functions of Host Controller Interface (HCI) profile and GATT profile functions, the IC adds the new functions defined by Bluetooth core specification 5.0, including 2 Mbps throughput, Long Range and Advertising Extension functions, stored in internal mask ROM. It also integrates a high gain power amplifier and realizes +8 dBm for long distance communication. When used in conjunction with an external non-volatile memory, the new IC becomes a fully-fledged application processor that temporarily loads applications and stores in internal RAM (76KB). It can also be combined with an external host processor.

As it is designed to be compliant with AEC-Q100, the low energy IC is primarily intended to be used in automotive applications. The wettable flank package simplifies automatic visual inspection needed to deliver the high levels of soldering quality required to withstand the vibration experienced in automotive applications.

Applications for this device include Remote Keyless Entry, On-Board Diagnostics to collect sensor data, Tire Pressure Monitoring Systems, and other contributors to improved vehicle comfort and safety.