2 x 100W Bluetooth+DSP Audio Amplifier Board - TSA8802B(Apt-X)

TSA8802B 2x100W 2 channels Bluetooth+DSP amplifier board with an AudioB I2S Bluetooth module that supports Apt-X. TSA8802B is a very flexible DSP/DAC/Amplifier combination board.

It has perfect class-D structure (Based on TPA3221) and 2 channels have 100W power output. All the channels are capable of outputting nominal power simultaneously and continuously.

This board can be powered by any DC12V-30V power supply. It can be used to drive any 2Ω~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 "TSA8802B". 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.

TSA8802B has Apt-X and TWS supported. 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 TSA8802, 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 "TSA8802B", connect it. Blue LED flash. You can play the music now.

TWS connection (2 boards can connected together)

Master board

Power up TSA8802, 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 "TSA8802B", 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 TSA8802, 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 TSA8802, blue LED flash 3 times per cycle. Double click S3 button, TSA8802 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 "TSA8802B", 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 TSA8802, blue LED flash 3 times per cycle. Double click S3 button, TSA8802 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 "TSA8802B", 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 TSA8802, 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 TSA8802 want to join as receiver board, repeat step1~step3 on the new TSA8802 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 24V DC, unless otherwise noted. Specifications subject to change without notice.

Parameter Condition Min Typ Max

Supply Voltage (VDC)

- 10 24 30

Power output per channel RL= 3Ω, 10% THD+N

112W

RL= 4Ω, 10% THD+N

105W

RL= 3Ω, 1% THD+N

100W

RL= 4Ω, 10% THD+N

88W

200W channel: RL= 2Ω, 1% THD+N

208W

THD+N 1W

0.02%

SNR A-weighted,Gain= 18 dB

108dB

DNR A-weighted,Gain= 18 dB

109dB

Minimum Load Impedance

3Ω

4Ω

Gain

18dB 24dB 34dB

Efficiency 100W @ 4Ohm

90%

Input Impedance

18dB

48KΩ

24dB

24KΩ

30dB

12KΩ

34dB

7.7KΩ

Features:

Size: 13.5cm x 9.2cm x 3.5cm aptX, aptX Low Latency, SBC and AAC ADAU DSP integrated Bluetooth 5.1 I2S Sampling Rate: 48KHz Working voltage: DC12V-30V TWS firmware: aptX, aptX-HD, SBC and AAC Party mode firmware: SBC TWS or Multi-point connection Up to 100 boards can be linked together.(Party firmware) Effective transmission distance: 80-100m Smart cooling system Over/under voltage protection Over current protection Over temperature protection

Applications:

Personal computer Background music system Musical instrument amplifiers Home DIY Car audio

Documents:

Datasheet 3D step file How to change the BT name How to pair and set TWS mode ADI SigmaStudio software How to write DSP program to DSP board Default DSP program

DSP program (with external POTs) Bluetooth Firmware(TWS) Bluetooth Firmware(Party mode) How to burn the Bluetooth firmware TWS pairing video tutorial Party mode pairing video tutorial 3D step file How to upgrade your DSP amplifier to support one-button pairing