4 x 50W SPDIF Coaxial+DSP Amplifier Board – TSA7804C
TSA7804C, a 4 x 50W four channels SPDIF+DSP digital amplifier board with a SPDIFBee receiver module. SPDIFBee converts the SPDIF signal to an I2S signal and outputs it to the ADAU1701 DSP chip. TSA7804C is a very flexible DSP/DAC/Amplifier combination board. It has a perfect class-D structure (Based on TPA3116D2) with two channels capable of a 50W power output and another channel boasting a 100W power output. All the 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(The subwoofer channel can drive 2Ω speaker). The power input port can be a power jack or screw terminal. The DC input jack is 2.5mm with positive core polarity. If you use a screw terminal, Please pay attention to the polarity!
TSA7804C has a coaxial input connector on the board that can accept digital audio sources of different sampling rates, from 16bit 44.1KHz to 26bit 96KHz. The highlight point is the ADAU1701 DSP chip on board. Users can set each channel’s audio tones separately.
External Buttons port: This function is not supported on TSA7804C.
Aux in enable port: The default DSP program can mix the RCA/Bluetooth audio and output to the amplifier chips. If you want to select the RCA/SPDIF by a switch manually, you can connect an external switch to this port and load a different DSP program.
POT port: Users can connect an external 10K potentiometer to control the audio volume.
DSP programming port: Users can load a new DSP program using the USBi JTAG Sigma DSP programmer
The onboard default DSP program mixes the RCA and SPDIF audio and outputs it to the speakers. Users can also change the DSP program to allow an external switch to select the audio source.
Specification
Typically at +25℃, it is Powered by 30V DC unless otherwise noted. Subject to change without notice.
Parameter | Condition | Min | Typ | Max |
Supply Voltage (VDC) | – | 12 | 21 | 24 |
Power output per channel | RL= 4Ω, 10% THD+N | 50W | ||
RL= 8Ω, 10% THD+N | 30W | |||
RL= 4Ω, 10% THD+N | 18W | |||
100W channel: RL= 2Ω, 1% THD+N | 100W | |||
THD+N | @4Ω, 1W, 1KHz | 0.03% | ||
Bandwidth @ ±3dB | @4Ω | 20Hz | – | 20KHz |
Input Impedance | – | – | 22KΩ | – |
Minimum Load Impedance | 3.2Ω | |||
Gain | 18dB | 24dB | 34dB | |
Efficiency | 50W @Â 4Ohm | 87% | – | 92% |
Features
- Size: 13.5cm x 9.2cm x 3.4cm
- SPDIF Supported sampling rate:
- 16bit, 44.1KHz, 48KHz, 88.2KHz, 96KHz
- 24bit, 44.1KHz, 48KHz, 88.2KHz, 96KHz
- I2S Sampling Rate: 48KHz, 16bit
- Four channels
- Working voltage: DC12V-24V
- Over/under voltage protection
- Over current protection
- Over temperature protection
Applications
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY
- Car Audio
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