1 x 100W Bluetooth+DSP Mono Audio Amplifier Board - TSA7801B

TSA7801B 100W Bluetooth+DSP mono amplifier board with an AudioB I2S Bluetooth module that supports Apt-X. TSA7801B is a very flexible DSP/Amplifier combination board. It has perfect class-D architecture(Based on TPA3116D2) and the mono channel has 100W power output. This board can be powered by any DC12V-24V power supply. It can be used to drive any 3Ω,4Ω or 8Ω passive speakers. TSA7801B has a smart cooling system, the fan not working in normal case to reduce the noise. Only start when the board overheat.

It's a one channel amplifier board. The only channel are 100W mono output(Bluetooth stereo right and left channel audio mixed in the DSP program). 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 "TSA7801B". You don't need a PIN, pair it and then you can play music.

TSA7801B has a 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...

TSA7801B are Apt-X and TWS supported. Therefore, Users can stream audio to 2 paired amplifier boards at the same time wirelessly.

 

 

Control buttons:

There are 3 buttons on the board, they have different functions in TWS and Party firmware:

TWS firmware

• Play/Pause: Play/pause music
• Rewind/Vol-: long press decrease volume, short click to play the previous song
• Forward/Vol+: long press increase volume, short click to play the next song

 

Party firmware

• Play/Pause: Pair button, double click board into paring mode
• Rewind/Vol-: TX button, single cilck board into transmitter mode; double click to searching receiver board
• Forward/Vol+: RX button, single click board into receiver mode; double to searching transmitter board

 

External Button port:

You can connect our Panel Mount Buttons Kit for Amplifier to TSA7801B's external buttons port, it works same as buttons on the board.

 

Potentiometer 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. This is our POT kit

1. ADC0- Main volume.
2. ADC1- Bass volume.
3. ADC2- Middle volume.
4. ADC3- treble volume.

 

DSP programming port:

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

 

 

 

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

 

How to use:

TWS firmware (single board)

1. Power up TSA7801B, red LED slow blink then red and blue LED flash alternately.
2. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7801B", connect it. Blue LED flash.
3. You can play the music now.

 

TWS connection (2 boards can connected together)

• Master board

1. Power up TSA7801B, red LED slow blink then red and blue LED flash alternately.
2. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7801B", connect it. Blue LED flash.
3. You can play the music now. If you only use one amplifier board, you don't need do the following steps.
4. Long press S1+S3 button for 1 second, board into TWS master mode. Red and blue LED flash alternately.

 

• Slave board

1. Power up another TSA7801B, red LED slow blink then red and blue LED flash alternately.
2. Long press S1+S2 button for 1 second, board into TWS slave mode. Red and blue LED flash alternately.
3. The master board will auto searching (30 seconds) slave board. Both master and slave board will be connected.
4. The slave board will have music out now.
5. If you want to disconnect TWS connection, long press S2+S3 button for 1 second to disconnect TWS connection.

 

Party firmware (single board)

1. Power up TSA7801B, blue LED flash 3 times per cycle.
2. Double click S3 button, TSA7801B into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
3. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7801B", connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
4. You can play the music now.

 

Party connection (multi boards can connected together)

• Transmitter board

1. Power up TSA7801B, blue LED flash 3 times per cycle.
2. Double click S3 button, TSA7801B into pairing mode. (Voice: Pairing, blue LED flash 2 times per cycle.)
3. Now, your smartphone will be able to find a new Bluetooth device which name is "TSA7801B", connect it. (Voice: Pairing successful, blue LED flash 1 time per cycle.)
4. You can play the music now. If you only use one amplifier board. You don't need do the following steps.
5. Press S2 button, board into transmitter mode.(Voice: Broadcast mode)

 

• Receiver board

1. Power up another TSA7801B, blue LED flash 3 times per cycle.
2. Press S3 button, board into receiver mode.(Voice: Broadcast audio enabled)
3. 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.
4. The receiver board will have music out now.
5. If a new TSA7801B want to join as receiver board, repeat step1~step3 on the new TSA7801B board.
6. 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 12-24VDC, RL = 4Ω, unless otherwise noted. Specifications subject to change without notice.

Parameter	Condition	Min	Typ	Max
Supply Voltage (VDC)	-	12		24
Power output	Parallel BTL (mono) output power, RL = 2 ohm,THD = 10%		100W
THD+N	Vcc = 21V, f = 1kHz, Po = 25W		0.1%
Bandwidth @ ±3dB	@4Ω	20Hz	-	20KHz
Input Impedance	Output filter: L = 10uH, C = 1uF	1.6Ω
Undervoltage protection threshold
Minimum Load Impedance		2Ω
Gain(dB)	R36 = 5.6kΩ, R33 = NC	19	20	21
	R36 = 20kΩ, R33 = 100kΩ	25	26	27
	R36 = 39kΩ, R33 = 100kΩ	31	32	33
	R36 = 47kΩ, R33 = 75kΩ	35	36	37
Efficiency		-	85%	-

 

Features:

• Size: 13.5cm x 9.2cm x 3.5cm
• TWS firmware: aptX, aptX-HD, SBC and AAC
• Party mode firmware: SBC
• ADAU DSP integrated
• Bluetooth 5.1
• I2S Sampling Rate: 48KHz
• Mono output
• Working voltage: DC12V-24V
• 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
• How to pair and set TWS mode
• How to change the BT name
• Bluesuite3.3
• ADK_QCC512X_QCC302X_WIN_6.4.2.26
• 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

 

Write a review

Your Name:


Your Review: Note: HTML is not translated!

Rating: Bad            Good

Enter the code in the box below: