2 x 30W SPDIF Coaxial+DSP Digital Audio Amplifier Board – TSA3120C
TSA3120C is a 2x30W 2-channel SPDIF+DSP digital amplifier board with an SPDIFBee receiver module. SPDIFBee converts the SPDIF signal to an I2S signal and outputs it to the ADAU1701 DSP chip. TSA3120C has a digital input, a closed-loop Class-D amplifier chip, and a TSA5756M. Each channel has a maximum 30W power output. Both channels are capable of outputting nominal power simultaneously and continuously. Any DC12V-24V power supply can power this board. It can be used to drive any 4Ω or 8Ω passive speakers.
It’s a two-channel amplifier board with a coaxial input connector that can accept different sampling rates from digital audio sources, from 16bit 44.1KHz to 24bit 96KHz.
The highlight point is the ADAU1701 DSP chip on board. It has a default DSP program loaded. Customers can adjust the gain, bassBassdrange, 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 that include equalization, crossover, bass enhancement, multiband dynamics processing, delay compensation, etc.
BVC port: This function is not supported on TSA3120C.
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 BassBassu 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 USB JTAG Sigma DSP programmer allows users to load a new DSP program.
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
- SPDIF-supported sampling rate:
- 16bit, 44.1KHz, 48KHz, 88.2KHz, 96KHz
- 24bit, 44.1KHz, 48KHz, 88.2KHz, 96KHz
- I2S Sampling Rate: 48KHz, 16bit
- Working voltage: DC12V-24V
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