2 x 30W DSP Digital Audio Amplifier Board – TSA3120A
TSA3120A is a 2x30W digital audio amplifier board. It has a digital Input, Closed-Loop Class-D Amplifier chip TSA5756M and each channel has a maximum 30W power output. Both channels can output nominal power simultaneously and continuously. Any DC12V-24V power supply can power this board and drive any 4Ω or 8Ω passive speakers. The highlight point is the 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 Sigma Studio, and the user can program this module with our USBi programmer to get more functions, including equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, etc. TSA3120A is the baseboard of TSA3120B. You can also plug an AudioB I2S module into the board, and then it becomes a Bluetooth audio amplifier.
BVC port: This function is not supported on TSA3120A.
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: The user can load a new DSP program using the USBi JTAG Sigma DSP programmer.
The following table lists all typical data on the amp board. For full specifications, please refer to the datasheet of TI’s TAS5756M chip.
TA = 25 °C, fIN = 1 kHz sine wave, RL= 4Ω, VCC = 24V. (Unless otherwise stated)
| Parameter |
Condition |
Min |
Typ |
Max |
| Supply Voltage (VDC) |
– |
12 |
– |
24 |
| Quiescent Current (mA) |
– |
– |
85 |
– |
| Full-Scale Input |
|
|
2V rms |
|
| Input Impedance (Kohm) |
– |
17.8 |
30 |
42 |
| Gain (dB) |
Can be changed in the DSP program |
– |
26 |
– |
| Output Power (Per channel) |
THD+N = 0.1% |
– |
28W |
– |
| Efficiency (%) |
Both channels output rating power
|
– |
>90 |
– |
| Minimum Load (ohm) |
– |
– |
3 |
– |
| Frequency Response (dB) |
±3dB |
20 |
– |
22k |
| Operating Temperature (℃) |
– |
0 |
20 |
50 |
Features:
- Size: 105*75*20mm
- 2 channels
- Maximum 30W power output for each channel
- ADAU1701 DSP chip on board
- Working voltage: DC12V-24V
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