ALM Bluetooth Module 4.1/4.0/3.0
| Spec Item | Range | |
| General | Dimension (mm) | 17.0 x 9.0 x 3.0 mm (double side mounting) |
| PCB material | FR4 4 layers | |
| Soldering pin type | Double soldering pads for flat cable | |
| Antenna | Antenna built-in | |
| Firmware memory | ROM | |
| Bluetooth | Bluetooth version | Bluetooth specification: V4.1 + EDR |
| Bluetooth chipset | BlueCore® CSR8645™ | |
| Profiles supported | A2DP/AVRCP/HFP/HSP | |
| Connectivity | Multi-link - A2DP/HFP | 2 x host devices (A2DP/HFP) or 2 x headsets |
| App connection | Support for Smart App Connectivity | |
| NFC | External NFC module available (Optional) | |
| RF/Wireless | Frequency range | 2.402GHz to 2.483GHz |
| Transmission power | Class 2 , -4 ~ +6 dBm | |
| Sensitivity | -90dBm (typical) | |
| Wireless Range | >10m ( free space) | |
| Audio | Microphone inputs | 2 x analog mic (stereo or dual-mono) |
| Line-in | Support for stereo line-in | |
| Output for speaker | Stereo differential output (upto 50mW) | |
| ADC sampling | 8 KHz ~ 48 KHz, 16-bit high-quality | |
| DAC sampling | 8 KHz ~ 96 KHz, 16-bit high-quality | |
| Codec | Hi-Fi quality stereo codec | |
| Decoder support | aptX, SBC, MP3 and AAC | |
| Music Enhancements | Configurable EQ, S3D, Volume Boost | |
| Noise/Echo reduction | CVC6.0 noise and echo reduction | |
| HSP voice | HD voice, bi-directional noise reduction | |
| Electrical | Supply Voltage - Charger | 4.75~5.75V (Recommended) |
| Supply Voltage - Battery | 4.30V (Max) | |
| Supply Voltage | 3.0V~3.7V (Recommended) | |
| Power comsumption - StandBy | ~250uA (typical) @ACL link, Sniff 500ms, LED off | |
| Power comsumption - SCO | ~12 mA (typical) @SCO link, HV3 packet | |
| Power comsumption - A2DP | ~14 mA (typical) @SBC, 48KHz sampling | |
Key Features
1.Bluetooth module for high-end in-ear headsets
2. Super Mini Size with PCB antenna built in
3. Support for Hi-Fi sound quality
4. Apt-X decoder built in
5. RF transmission power level control configurable
6. Multi-band EQ tunable, S3D and Volume Boost
7. Support for voice prompt
8. Support for USB charging enumeration and Charge management
9. Verified production line capability and quality system
Outstanding features
1. Multi-languages voice prompt (optional)
2. Dual-mic technology as an option for better noise cancellation
3. Multi-link with source devices or 2 headsets
4. Amazing Individuality - Bluetooth kit of 1 transmitter adapter & 2 receivers/headsets
5. Complete verification test on functional, RF, audio and Bluetooth
6. Complete environmental & reliability test
ALM Bluetooth Module product picture
R&D Lab Test
Production Assembly Line
Factory picture
About product
This is a ultra small size Bluetooth module with PCB antenna built in, focusing on in-ear stereo headset applications. The module is elaborately designed in EMI and audio configuration based on CSR8645 with CVC noise & echo cancellation and apt-X technologies, support for multi-link, smart apps connectivity, dual-mic, voice prompt features. It has excellent RF performance by fine-tuned RF match and antenna directionality.
About our company
We are an one-stop supplier with professional service in wireless audio products, both in R&D and production quality based on our management system and industrial expertise.
Contact Person :Lisa Liu
Tel: 0086 755 27674937
Fax: 0086 755 2796 3997
Skype : lisa-liu929
Whatsapp : 00861 3424 2488 98