2 x 20W Bluetooth 5.0 Multipoint Audio Amplifier Board – TSA1740
TSA1740 is a 2x20W Bluetooth 5.0 audio amplifier board. It has a digital amplifier chip, the YDA174, on the board. It is a 20W×2ch high-performance digital audio power amplifier IC with two DSPs. This board can be powered by any DC power supply ranging from 10V to 18V. It can drive any 4Ω or 8Ω passive speakers. It’s perfect for your Hi-Fi application.
You may wish to pair it with a mobile phone, computer, or any other compatible device. Power the amplifier board. Use your phone, PC, or anything else to search for a new Bluetooth device. The module will appear as “TSA1740”. You don’t need a PIN; pair it, and then you can play music.
The highlight is that you can connect multiple TSA1740s to make them work together, forming a Bluetooth network. When you set the board to “party mode,” users can wirelessly stream audio to multiple amplifier boards simultaneously.
Note: The backside of the board has soldering pads for external buttons. You may need to use a shielded cable to connect these buttons to prevent interference.
One TSA1740 works with a smartphone.
How to use:
- Power the amplifier board.
- If your smartphone has never paired with it before, you need to press the ON/OFF button first and then use your smartphone to search for a new Bluetooth device. The board will appear as “TSA1740”.
- Pair and connect it, and then you can play music.
- When you use it next time, you don’t need to press the ON/OFF button after powering on.
Multi TSA1740 in party mode works with a smartphone
How to enter into party mode:
- Select one board as the Master board. Ensure your smartphone is paired and connected to it. You can then play music and hear the music from the master amplifier’s speakers.
- Power on the other slave boards
- Long press the party button on the master board.
- Press the party button on each slave board individually to pair them with the master board. Once paired, all speakers can play music.
Specifications:
Typically at +25℃, it is Powered by 12V DC unless otherwise noted. Subject to change without notice.
Parameter | Condition | Min | Typ | Max |
Supply Voltage (VDC) | – | 10 | – | 18 |
Idle Power | SD Floating | – | 1.3W | 2.5W |
Standby Power | SD Connected to GND | – | 0.1W | 0.3W |
Maximum Current | 40W @Â 4Ohm | – | 3.42A | – |
Efficiency | PVDD=12V, RL=8Ω | – | 86% | – |
Minimum Load Impedance | 3.2Ω | |||
Distortion | RL=8Ω, PO=4.5W, 1 kHz | – | 0.05% | – |
Gain | 25dB | |||
Residual Noise | RL=8Ω, A-Weighted | – | 50 μV | – |
Input Impedance | – | – | 22KΩ | – |
Output Power | PVDD=14V, RL=4Ω, THD+N=10% | – | 20W | – |
PVDD=15V, RL =8Ω, THD+N=10% | – | 15W | – | |
Bandwidth @ ±3dB | @4Ω | 20Hz | – | 20KHz |
THD | @4Ω, 1W, 1KHz | – | 0.0299% | – |
@4Ω, 10W, 1KHz | – | 0.073% | – |
Features:
- Dimensions: 5.6cm x 12.6cm x 2.8cm
- Bluetooth 5.0
- Supports A2DP 1.3, AVRCP 1.6, HFP 1.6, HSP1.2 and SPP 1.2
- Aux in/Line in auto-detect
- Working voltage: DC10V-18V
- Pop noise reduction
- Over/under voltage protection
- Over current protection
- Over temperature protection
Applications:
- Personal computer
- Background music system
- Musical instrument amplifiers
- Home DIY
Reviews
There are no reviews yet.