Specification :

BTM4805C2P is a multi-functional Bluetooth module, using BC05MM chip of CSR. BC5-MM is a multi-functionally programmable single-chip solution, highly integrating on-chip radio, base band, DSP, stereo CODEC, charger and SMPS etc. The Kalimba DSP core embedded in the BC5-MM is an open platform coprocessor, with the function of advanced audio decode ( MP3, AAC, AAC + ) , echo cancellation and noise reduction etc.
This module provides a high quality, low-cost Bluetooth voice communication solution, and it is the ideal choice of the high-quality mono and the stereo headset design. The internal DSP can achieve the function of handsfree echo elimination. High integration level Design reduces the component amount and the BOM cost, making cost performance upgrade unprecedented. It can also be used in the products such as car handsfree device, VoIP handheld device, music player device, Bluetooth adapter and USB multimedia adapter etc. The users don’ t need to program or consider the complex RF circuit, and they can develop common high-end Bluetooth stereo headset and Bluetooth car handsfree device.

Features
Æ Bluetooth 2.1 + EDR compliant
Æ Transmission distance: Class2 10 meters ( 32.8feet) in free space ( Class1 100 meters ( 328feet) in free space)
Æ built-in antenna
Æ working temperature: -13 ~ 185
Æ built-in DSP echo cancellation chip
Æ echo cancellation: Linear echo cancellation 25-35dB sound measurement cancellation, 52-65dB acoustic echo cancellation It can eliminate various echoes within 200ms , providing clear, smooth full-duplex voice communication.
Æ noise cancellation: 18dB, it provides resonant, clear voice
Æ left and right dual tracks
Æ A / D, D / A: 72dB SNR, sampling rate 8-11K

Applications of BTM4805C2P
Æ stereo headset
Æ car handsfree kit
Æ Bluetooth audio frequency adapter
Æ Bluetooth speaker
Æ car handsfree stereo system
Æ portable GPS device

This module applies to high-quality Bluetooth headset, Bluetooth stereo speaker and car hands-free system, as well as Bluetooth network access equipment, with excellent radio frequency transmission and excellent sound disposition capability.