2 x 20W Class D Bluetooth Audio Amplifier Board – TSA9840
TSA9840 2x20W audio amplifier board with AudioB plus Bluetooth module. It features a perfect class-D architecture based on MAX98400A, and each channel has a 20W power output. Both channels can simultaneously and continuously output nominal power. This board can be powered by any DC power supply ranging from 10V to 24V. It can be used to drive two 8Ω passive speakers. TSA9840 can also be connected with our TSA1000, TSA1010, or TSA1020 external audio volume control board, allowing users to adjust the audio volume by rotating the actual knob.
It’s perfect for your Hi-Fi applications. Pair it with a mobile phone, computer, or other compatible device—power up the amplifier board. Use your phone, PC, or anything else to search for a new Bluetooth device. The module will appear as “TSA9840.” You don’t need a PIN; pair it, and you can start playing music.
- TSA9840 can automatically detect the aux/Line-in Audio input. The Bluetooth Audio source has a higher priority. The amplifier will output the aux/Line-in audio when Bluetooth audio is paused or disconnected.
- There is an additional LINE OUT audio output jack. It can also be connected to a subwoofer amplifier board.
- BVC Port: The BVC port can be connected to our Audio Volume Controller to control the Bluetooth audio volume.
TSA9840 can automatically detect the aux-in/line-in Audio input. The Bluetooth Audio source has a higher priority. The amplifier will output the aux-in/Line-in audio when Bluetooth audio is paused or disconnected.
TSA9840 + TSA1000, Both Aux-in and Bluetooth audio volume, can be controlled through the BVC port
Specifications
The following table lists all typical data on the amp board. For full specifications, please refer to the datasheet of the MAX98400A chip (unless otherwise stated).
Parameter | Condition | Min | Typ | Max |
Supply Voltage (VDC) | Inferred from PSRR test | 10 | – | 24 |
Current Limit | 3.5A | 5A | – | |
Bandwidth @ ±3dB | @8Ω | 20Hz | – | 22KHz |
Efficiency | PO = 2X20W, MAX98400A, PVDD = 12V ,RL = 8Ω |
– | 90% | – |
Minimum Load Impedance | 8Ω | |||
Switching Frequency | 265KHZ | 330KHZ | 295KHZ | |
Gain | 9dB | 20.1dB | 29.8dB | |
Input Sensitivity(RMS) | – | – | 620mV | – |
Input Impedance | – | – | 22KΩ | – |
Output Power | Stereo,RL = 8Ω,THD+N 10% | – | 22W | – |
Mono, RL = 4Ω,THD+N 10% | – | 44W | – | |
THD+N | POUT=0.1W to POUT/2, fIN= 20Hz to 20kHz, RL= 8Ω | – | 0.3% | – |
POUT/2, fIN=1kHz, RL= 8Ω | – | 0.03% | – |
Features:
- Size: 9.1cm x 5.0cm
- Bluetooth 4.0
- Bluetooth audio volume control port(BVC)
- Working voltage: DC10V-24V
- Thermal and output current protection
Applications:
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY
- Car Audio
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