2 x 100W Class D Bluetooth Audio Amplifier Board – TSA7498B (Apt-X)
This is a 2x100W audio amplifier board with a new Audio B plus Bluetooth module that supports Apt-X. It has integrated ST high-performance TDA7498 chip which supports dual channel audio amplification.
Both of the channels are capable of outputting nominal power simultaneously and continuously. This board can be powered by any DC12V-39V* power supply.
It has a smart cooling system, so, the fan does not work in normal operation case to reduce the noise. The fan only starts when the chip temperature exceeds 65°C.
It is perfect for your Hi-Fi audio application, the audio source can be RCA input or Bluetooth. It is compatible with all the Bluetooth devices that support media audio, including iPhone and Android.
Let your smartphone pair up with this board and play a piece of music. It is that easy.
Note: We have tested it. We ship the board after full test. It also works well with 12V DC power. However, we suggest to use DC 14V-39V power supply if possible.
Specification:
The following table lists all typical data of the amplifier board. For full specification, please refer to the datasheet of ST’s TDA7498 chip.
TA = 25 °C, fIN = 1 kHz sine wave, RL= 6Ω, VCC = 36V. (Unless otherwise stated)
|
Parameter |
Condition |
Min |
Typ |
Max |
|
Supply Voltage (v) |
– |
14 |
36 |
40 |
|
Quiescent Current (mA) |
FAN ON,STBY Disable |
– |
90 |
– |
|
FAN ON,STBY Enable |
– |
50 |
– |
|
|
FAN OFF,STBY Disable |
– |
40 |
|
|
|
FAN OFF,STBY Enable |
|
10 |
|
|
|
Input Sensitivity (mV) |
25.6dB |
– |
1356 |
– |
|
31.6dB |
696 |
|||
|
35.1dB |
460 |
|||
|
37.6dB |
341 |
|||
|
Input Impedance (Kohm) |
– |
48 |
60 |
– |
|
Gain (dB) |
GAIN0 = L, GAIN1 = L |
24.6 |
25.6 |
26.6 |
|
GAIN0 = L, GAIN1 = H |
30.6 |
31.6 |
32.6 |
|
|
GAIN0 = H, GAIN1 = L |
34.1 |
35.1 |
36.1 |
|
|
GAIN0 = H, GAIN1 = H |
36.6 |
37.6 |
38.6 |
|
|
Output Power (W rms) |
THD = 10% |
– |
100 |
– |
|
Efficiency (%) |
Both channels output rating power. |
– |
>90 |
– |
|
Minimum Load (ohm) |
– |
– |
6 |
– |
|
Frequency Response (dB) |
±3dB |
20 |
– |
22k |
|
Operating Temperature (℃) |
– |
0 |
20 |
50 |
Features:
- Size: 12cm x 8cm
- aptX, aptX Low Latency, SBC and AAC
- Smart cooling system
- Bluetooth 4.0
- An external mute control port
- Working voltage: DC 14V-39V
- Over/under voltage protection
- Overcurrent protection
- Over temperature protection
Applications:
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY Audio System
- Car audio
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