Product Introduction
This product is a low-power Bluetooth design solution that supports Bluetooth 4.2 transmission and lossless dual channel stereo playback. After the module is connected to Bluetooth, it can quickly achieve Bluetooth wireless transmission, which is very convenient. In an open environment, the Bluetooth connection distance can reach up to 20 meters. Widely used in various Bluetooth audio receivers, DIY modification of various audio systems, etc.
Product Parameter
|
功能 Function |
參數(shù) Parameter |
|
MICRO電源供電 MICRO power supply |
? |
|
音頻耳機(jī)口 Audio headphone jack |
? |
|
內(nèi)置功放 Built in amplifier |
? |
|
鋰電池供電 Lithium battery power supply |
? |
|
支持USB聲卡，免驅(qū)動(dòng) Supports USB sound card, driver free |
? |
|
音量記憶/調(diào)節(jié) Volume Memory/Adjustment |
? |
|
MUTE靜音接口 MUTE mute interface |
? |
|
擴(kuò)展按鍵 Expansion button |
? |
|
藍(lán)牙版本 Bluetooth version |
Bluetooth 4.2 |
|
支持藍(lán)牙協(xié)議 Supports Bluetooth protocol |
HFP1.7、A2DPV1.2、AVRCPV1.5、AVCTPV1.2、AVDTPV1.2 |
|
格式支持 Format support |
支持WAV/WMA/FLAC/APE/MP3無損解碼，立體雙聲道輸出 Support WAV/WMA/FLAC/APE/MP3 lossless decoding, stereo dual channel output |
|
工作電壓 Working voltage |
5V/3.7~4.2V |
|
未連接廣播狀態(tài) Not connected to broadcast status |
5.5mA |
|
連接工作狀態(tài) Connection working status |
20mA |
|
深度睡眠 Deep sleep |
3μA |
|
傳輸距離 Transmission distance |
20米(空曠或者干擾低條件下) 20 meters (under open or low disturbance conditions) |
|
工作溫度 Working temperature |
-40℃ TO 85℃ |
|
靈敏度 Sensitivity |
-87dBm |
Product Use
The direct output power of the module is very low, and a power amplifier needs to be connected to hear the sound normally. After connecting the wires to the module and powering it on, the module will emit Bluetooth. If a mobile phone is connected to Bluetooth, it needs to be manually connected for the first time. The next time Bluetooth is turned on, it will automatically connect. After Bluetooth is connected, it will convert the received digital audio into analog audio output.
(1) Pin Description
|
編號 Number |
引腳 Pin |
說明 Explain |
| 1 | KEY |
按鍵控制端(4個(gè)按鍵功能，需要另外加電阻 Button control terminal (4 button functions, additional resistors required) |
| 2 | MUTE |
靜音控制端(靜音時(shí)輸出高電平3.3V，播放時(shí)輸出低電平) Mute control terminal (outputs high level 3.3V during mute and low level during playback) |
| 3 | VCC |
電源正極5V(鋰電池3.7V供電需要短路二極管) Positive pole of power supply 5V (lithium battery 3.7V power supply requires short-circuit diode) |
| 4 | GND |
電源負(fù)極 Negative pole of power supply |
| 5 | L |
左聲道輸出 Left channel output |
| 6 | R |
右聲道輸出 Right channel output |
(2) Usage tips
MUTE mute control terminal: used to control the power amplifier board, MUTE outputs a high level 3.3V during mute and a low level during playback. If the mute high level of the amplifier board is effective, it can be directly connected. If the mute of the power amplifier board is controlled at a low level, a reverse circuit needs to be added, as shown in the following figure:
Product Special note
1. Signal interference: Bluetooth antennas are extremely susceptible to high-frequency or strong electromagnetic signal interference, so they should be placed as far away as possible from transmitting wireless devices. And the board should not be in close proximity to metal objects, maintaining a certain distance.
2. If there is a current sound when connecting to the power amplifier board, it is caused by ground wire interference. It is recommended that the output end of the Bluetooth module should not be plugged in, and must be soldered, especially for the ground wire. The wire should not be too long, the shorter the better, and it should be thicker as much as possible. The issue of the audio ground being connected to the grounding point of the amplifier board requires it to be connected to the ground at the audio input end of the amplifier. This grounding point can be welded at different positions to achieve the lowest current sound. Suggest separate power supply for Bluetooth and amplifier board, isolating Bluetooth ground and amplifier ground.
3. Due to the bare board design of this product, try not to touch the components on the board with your hands, as it may cause static electricity to kill the chip and burn it out.
Warning: The charging interface of this product is limited to current charging mode and does not come with charging management! For the safety of your life and property, please be sure to use lithium batteries with protective plates produced by legitimate manufacturers. If any losses are caused due to improper use, our company will not be held responsible!
Product Use
Product Show
Payment&Transportation
Official Certificate&Certificate
Multiple product supply
Company office environment
Warehouse Real Shot
Standard packaging
We also provide ：
| Part No | Manufacturer | Date Code | Quantity | Description |
| LM22676ADJ | NS | 19+ | 250 | SOP8 |
| TPS562201DDCR | TI | 22+ | 795500 | SOT23-6 |
| NJG1806K75 | JRC | 22+ | 500000 | DFN6 |
| TLV74318PDQNR | TI | 22+ | 402000 | X2SON-4 |
| NJG1801K75 | JRC | 22+ | 300000 | SMD |
| NJG1804K64 | JRC | 22+ | 300000 | DFN8 |
| LM27761DSGR | TI | 22+ | 151000 | WSON8 |
| TLV62565DBVR | TI | 22+ | 138000 | SOT23-5 |
| TPS613222ADBVR | TI | 22+ | 108000 | SOT23-5 |
| LNK625DG-TL | POWER | 22+ | 100000 | SOP-8 |
| OPA4322AIPWR | TI | 22+ | 100000 | TSSOP14 |
| TLV75528PDRVR | TI | 22+ | 99000 | WSON-6 |
| TPS7A2025PDQNR | TI | 22+ | 78500 | X2SON-4 |
| TLV62568DBVR | TI | 22+ | 72000 | SOT23-5 |
| STM32L051K8U6TR | ST | 22+ | 60000 | QFN32 |
| SKY66421-11 | SKYWORKS | 22+ | 56500 | QFN16 |
| TPS7A1111PDRVR | TI | 22+ | 54000 | WSON6 |
| TLV62569PDDCR | TI | 22+ | 52000 | SOT23-6 |
| TLV62569DBVR | TI | 22+ | 48000 | SOT23-5 |
| TPS23753APWR | TI | 22+ | 40000 | TSSOP14 |
| NB691GG-Z | MPS | 22+ | 30000 | QFN |
| SN74AHC1G02DBVR | TI | 22+ | 27939 | SOT-23 |
| TPS63000DRCR | TI | 22+ | 23238 | VSON10 |
| TLV75533PDRVR | TI | 22+ | 21500 | WSON6 |
| NB687BGQ-Z | MPS | 22+ | 20000 | QFN |
| A3916GESTR-T-1 | ALLEGRO | 22+ | 17150 | QFN-20 |
| TPS62135RGXR | TI | 22+ | 15000 | VQFN11 |
| TLE2022AMDR | TI | 0803+ | 12500 | SOP8 |
| TPS23756PWPR | TI | 22+ | 12000 | HTSSOP-20 |
