BM20

BM20/BM23 Bluetooth® 4.1 Stereo Audio Module Features:  Complete, Fully Certified, Embedded 2.4 GHz Bluetooth® Version 4.1 Module  Bluetooth Classic (BDR/EDR)  Bluetooth SIG Certified  Onboard embedded Bluetooth Stack  Transparent UART mode for seamless serial data over UART interface  Easy to configure with Windows GUI or direct by MCU  Firmware can be field upgradable via UART  Compact surface mount module: 29 x 15 x 2.5 mm3  Castellated surface mount pads for easy and reliable host PCB mounting  Environmentally friendly, RoHS compliant  Perfect for Portable Battery Operated Devices  Internal Battery Regulator Circuitry  Worldwide regulatory certifications  Audio-In / Out BM23 support digital audio I2S format. BM20 support analog audio output. Operational:  Operating voltage: 3.0V to 4.2V  Temperature range: ‐20C to 70°C  Simple, UART interface  Integrated crystal, internal voltage regulator, and matching circuitry  Multiple I/O pins for control and status RF/Analog:  Frequency: 2.402 to 2.480 GHz  Receive Sensitivity: ‐91 dBm (2Mbps EDR)  Power Output: class 2 / +4dBm max.  Connection Distance: >10m (free space and no interference) Audio processor  Support 64 kb/s A-Law or -Law PCM format, or CVSD (Continuous Variable Slope Delta Modulation) for SCO channel operation.  Noise suppression  Echo suppression  SBC and optional AAC decoding  Packet loss concealment  Build-in four languages (Chinese/ English/ Spanish/ French) voice prompts and 20 ...