TSA1702B Bluetooth + DSP Audio Receiver Board
20 or more $29.20
TSA1702B is a Bluetooth + DSP board with an AudioB I2S v3 module that supports Apt-X. It can be powered by a microUSB cable or any DC9V-30V power supply. You can pair it with a mobile phone or a computer (etc). Power the board, use your phone or PC (etc) to search for a new Bluetooth device. The module will appear as "TSA1702B". You don't need a PIN, pair it and then you can play music. It is just like a TSA1701 + Bluetooth.
The TSA1702B is a complete audio digital signal processing module. The main DSP chip on this module is ADAU1701. The application range from active loudspeaker concepts (digital 3 way 3 unit, 2 way 2 unit crossover, bass enhancement, etc.) and realize the transformation from 2.0 to 2.1. It has four potentiometers and with default program loaded. Customers can adjust the gain, bass, midrange and treble. It also has a debug port for Sigima Studio, and users can program this module with our USBi programmer to get more functions that include equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, etc.
Pins define:
| Port name | Pin name | Direction | Description |
| External Potentiometers port | 3.3V | Power Out | 3.3V Output |
| A_ADC1 | Analog In | Treble control | |
| A_ADC2 | Analog In | Midrange control | |
| A_ADC3 | Analog In |
Bass control |
|
| A_ADC0 | Analog In | Gain control | |
| GND | - | ||
| Aux in Input | GND | - | |
| ADC1 | Analog In | Right channel | |
| ADC0 | Analog In | Left Channel | |
| Audio Out1 | GND | - | |
| DAC0 | Analog Out | Left Channel | |
| DAC1 | Analog Out | Right channel | |
| Audio Out2 | GND | - | |
| DAC2 | Analog Out | Left Channel | |
| DAC3 | Analog Out | Right channel | |
Control buttons:
There are 3 buttons on the board which can control the audio volume and play/pause ect...
Pins define:(Check the board backside silkscreen):
- S1: Play/pause button
- S2: long press decrease volume, short click to play the previous song
- S3: long press increase volume, short click to play the next song
Potentiometers port:
You can connect external POTs (5K~20K) to control the Main volume, treble, middle, Bass. This is our POT kit
- ADC0- Main volume.
- ADC1- Bass volume.
- ADC2- Middle volume.
- ADC3- treble volume.
Warning: You need to disconnect the soldering pads on the board back side when you connect external potentiometers. Or the ADC port may be burned. Potentiometers value: 1Kohm-100Kohm.
DSP programming port:
TSA1702B's DSP detects both Bluetooth signal and Line in signal, but the default program makes Bluetooth has higher prority. If Bluetooth signal is detected, TSA1702B will output Bluetooth audio source, otherwise it will output Line in audio source. You can develop DSP program to fulfill your requirement, then load the new DSP program by using USBi JTAG Sigma DSP programmer.
TSA1702B works with stereo amplifier board
Features:
- Size: 9cm x 6cm
- 28-/56-bit, 50 MIPS Digital Audio Processor
- Audio out output level: 0.9Vrms
- Audio input signal range: 2Vrms
- Input resistance: 20Kohm
- Fully Programmable with SigmaStudio Graphical tool
- 5V microUSB or DC9-30V Power input
- Bluetooth 5.1
- I2S Sampling Rate: 48KHz
- TWS firmware: aptX, aptX-HD, SBC and AAC
- Party mode firmware: SBC
- ADAU DSP integrated
- TWS or Multi-point connection
- Up to 100 boards can be linked together.(Party firmware)
- Effective transmission distance: 80-100m
Documents:
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