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The Boardoza TPA3111 Mono Audio Amplifier Module is a compact and efficient Class-D audio amplifier built around the Texas Instruments TPA3111D1 chip. Designed to deliver up to 10W mono output power, this board provides high-quality audio performance with minimal heat generation thanks to its high-efficiency architecture.
With a wide 8V to 28V DC input voltage range, this amplifier module is compatible with a variety of power sources including DC adapters and battery systems. Screw terminal connections for power, audio input, and speaker output make installation quick and reliable. It is ideal for DIY speaker builds, portable audio systems, embedded audio solutions, and custom sound projects requiring compact and efficient amplification.
| Front Side | Back Side |
|---|---|
Model: TPA3111D1
Manufacturer: Boardoza
Manufacturer IC: Texas Instruments
8V – 28V DC
Mono Audio Amplifier
Class-D
Up to 10W
Up to 90%
Mono (H-Bridge)
Configurable via JP2 / JP3 (Default: 36 dB)
Thermal protection, short-circuit protection
-40 °C to +85 °C
40 mm x 40 mm
| Pin / Jumper | Pin Name | Description |
|---|---|---|
| JP2 | GAIN1 | Gain select input (logic level via jumper) |
| JP3 | GAIN0 | Gain select input (logic level via jumper) |
Default configuration is typically 36 dB (GAIN1=1, GAIN0=1).
| GAIN1 | GAIN0 | Amplifier Gain (dB) (Typical) | Input Impedance (kΩ) (Typical) |
|---|---|---|---|
| 0 | 0 | 20 | 60 |
| 0 | 1 | 26 | 30 |
| 1 | 0 | 32 | 15 |
| 1 | 1 | 36 | 9 |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | SD | Shutdown pin (Active Low). Connect to FAULT for auto-recovery |
| 2 | FAULT | Fault indicator pin (Active Low). Connect to SD for auto-recovery |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | 8V–28V | DC Voltage Input |
| 2 | GND | Ground |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | IN+ | Positive audio input |
| 2 | IN- | Negative audio input |
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | OUT+ | Class-D H-Bridge positive output |
| 2 | OUT- | Class-D H-Bridge negative output |
All hardware design files are licensed under Creative Commons Attribution-ShareAlike 4.0 International License.
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