Specifications

1.Hi-Fi with apt-X
2.Super mini, antenna built in
3.Elaborate RF enhancement design
4.Support dual-mic noise/echo cancelling

Mini bluetooth earphone module

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 stereo 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

7. Multi-band EQ tunable, S3D and Volume Boost

8. Support for voice prompt 

10. Support for USB charging enumeration and Charge management

11. Verified production line capability and quality system

 

Unique features

1. Provide multi-languages design  (optional)

2. Optional Dual-mic technology for better noise cancellation

3. Multi-link with source devices or 2 earphone

4. Amazing Individuality - Bluetooth kit of 1 transmitter adapter & 2 receivers/headsets

5. Integrated verification test including functional, RF, acoustic and Bluetooth qualifications

6. Reliability test and external lab test for certifications

 

  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.