2 x 50W Bluetooth+DSP Audio Amplifier Board - TSA7802B(Apt-X)

Brand: Tinysine
Product Code: G64799BE831A08
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Availability: 500

Price: $46.95

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Description Reviews (4) Related Products (9)

TSA7802B 2x50W 2 channels Bluetooth+DSP amplifier board with an AudioB I2S Bluetooth module that supports Apt-X. TSA7802B is a very flexible DSP/DAC/Amplifier combination board. It has perfect class-D structure (Based on TPA3116D2) and 2 channels have 50W power output. All the channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC12V-24V power supply. It can be used to drive any 4Ω or 8Ω passive speakers.

It's a 2 channels amplifier board. You can pair it with a mobile phone or a computer (etc). Power the amplifier board. Use your phone or PC (etc) to search for a new Bluetooth device. The module will appear as "TSA7802B". You don't need a PIN, pair it and then you can play music.

The highlight point is ADAU1701 DSP chip on board. It has a default DSP program loaded. Customers can adjust the gain, bass, midrange and treble in the DSP program. It also has a debug port for Sigima Studio, and user can program this module with our USBi programmer to get more functions that include equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, etc. TSA7802B supports Apt-X and TWS. Therefore, Users can stream audio to 2 paired amplifier boards at the same time wirelessly.

External Button port:

There are 3 buttons on the board that can control the audio volume and play/pause ect... You can connect external buttons easily by using these button control ports.

Pins define:(Check the board backside silkscreen):

P/P: Play pause button
VOL+: volume increase and forward button
VOL-: volume decrease and rewind button
VDD_BT_IO: AudioB I2S 1.8V output

Volume control POT port:

There is an Ext POT port on the board. You can connect external POTs (5K~20K) to control the Main volume,treble,middle and Bass. You need to update the DSP program first. DSP program (with external POTs). This is our POT kit

ADC0- Main volume.
ADC1- Bass volume.
ADC2- Middle volume.
ADC3- treble volume.

DSP programming port:

User can load a new DSP program by using the USBi JTAG Sigma DSP programmer

The default DSP program can automatically select the Line in /Bluetooth audio and output to the amplifier chips. Bluetooth audio signal has a higher priority.

2 boards work in TWS mode. You can also build a wireless subwoofer system.

How to use:

TWS firmware (single board)

Power up TSA7802, red LED slow blink then red and blue LED flash alternately.
Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7802B", connect it. Blue LED flash.
You can play the music now.

TWS connection (2 boards can connected together)

Master board

Power up TSA7802, red LED slow blink then red and blue LED flash alternately.
Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7802B", connect it. Blue LED flash.
You can play the music now. If you only use one amplifier board, you don't need do the following steps.
Long press S1+S3 button for 1 second, board into TWS master mode. Red and blue LED flash alternately.

Slave board

Power up another TSA7802, red LED slow blink then red and blue LED flash alternately.
Long press S1+S2 button for 1 second, board into TWS slave mode. Red and blue LED flash alternately.
The master board will auto searching (30 seconds) slave board. Both master and slave board will be connected.
The slave board will have music out now.
If you want to disconnect TWS connection, long press S2+S3 button for 1 second to disconnect TWS connection.

Party firmware (single board)

Power up TSA7802, blue LED flash 3 times per cycle.
Double click S3 button, TSA7802 into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7802B", connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
You can play the music now.

Party connection (multi boards can connected together)

Transmitter board

Power up TSA7802, blue LED flash 3 times per cycle.
Double click S3 button, TSA7802 into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7802B", connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
You can play the music now. If you only use one amplifier board. You don't need do the following steps.
Press S2 button, board into transmitter mode.(Voice: Broadcast mode)

Receiver board

Power up another TSA7802, blue LED flash 3 times per cycle.
Press S3 button, board into receiver mode.(Voice: Broadcast audio enabled)
Double click S2 button on transmitter board, double click S3 button on receiver board, the transmitter board will auto searching (30 seconds) receiver board. Both transmitter and receiver board will be connected.
The receiver board will have music out now.
If a new TSA7802 want to join as receiver board, repeat step1~step3 on the new TSA7802 board.
If a receiver board wants to quit, click S2 button on that board to set it into transmitter mode.

Specification:

Specifications typical @ +25℃, Powered by 30V DC, unless otherwise noted. Specifications subject to change without notice.

Parameter	Condition	Min	Typ	Max
Supply Voltage (VDC)	-	12	21	24
Power output per channel	RL= 4Ω, 10% THD+N		50W
	RL= 8Ω, 10% THD+N			30W
	RL= 4Ω, 10% THD+N	18W


THD+N	@4Ω, 1W, 1KHz		0.03%
Bandwidth @ ±3dB	@4Ω	20Hz	-	20KHz
Input Impedance	-	-	22KΩ	-
Minimum Load Impedance		3.2Ω
Gain		18dB	24dB	34dB
Efficiency	50W @ 4Ohm	87%	-	92%