Laird Technologies has added four new Bluetooth modules to its range of wireless products. The modules incorporate Bluetooth stacks and are pre-approved to minimise the design effort in implementing short-range wireless communications.
The BTM410 is designed for data applications and is a fully integrated, sub-miniature Bluetooth data-oriented module based on Cambridge Silicon Radio’s (CSR) BC04 chipset. Incorporating a full Bluetooth stack and supporting a serial port profile, the BTM410 provides a UART interface and a comprehensive AT command set to allow an easy interface to a host processor.
Targeted at systems running an embedded operating system with its own Bluetooth stack (such as Windows CE or Linux), the BTM420 module range uses the same sub-miniature format, but supports an HCI interface and is pre-approved as a Bluetooth controller sub-system.
Optimised for audio and multimedia applications, the BTM510 supports headset applications and is based on CSR’s BC05 chipset with integrated DSP. Its small form factor with low power consumption supports stereo speakers with onboard speaker drivers, as well as a microphone. The BTM510 includes a full Bluetooth stack with built-in support for A2DP, AVRCP, HFP, and HSP profiles. An AT command set, enhanced for multimedia applications, provides simple control, including the ability to map local switch functionality to a range of I/O pins.
For power multimedia applications, the BTM520 series offers a high-gain, multilayer ceramic antenna that provides +10 dBm output. In addition, the integrated Bluetooth stack provides a comprehensive range of profiles. The 32-bit Kalimba DSP, running at 64 MIPS, allows onboard implementation of noise reduction, echo cancellation and other multimedia applications. Speaker drivers, microphone bias, and all audio filtration are included within the module. The module also provides a full range of I/O, allowing it to support CSR Road Tunes and Blue Tunes applications.
All these new modules are based on the latest Bluetooth standard, Version 2.1+EDR, and deliver the advantages of secure simple pairing. This allows simpler user interfaces, making products easier to use, which reduces subsequent support costs. All of the modules are designed for high reliability and support an industrial operating temperature range of -30°C to +70°C.
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