Boardoza AIP9971SE8 5W Class-D/Class-AB Audio Amplifier Breakout Board
Boardoza AIP9971SE8 Audio Amplifier Breakout Board is a compact audio power module capable of delivering up to 5W of output power across a 2.0V to 5.5V DC supply rail. Built around the AiP9971SE8 amplifier IC, the board features a hardware jumper to easily toggle between high-efficiency Class-D operation and low-EMI Class-AB mode. Its bridge-tied load (BTL) differential speaker outputs drive 2Ω to 8Ω loads directly without bulky DC-blocking capacitors, aided by an onboard LC output filter to attenuate high-frequency switching noise. With an integrated trimming potentiometer for analog volume and gain tuning, a dedicated shutdown (SD) pin for micro-power standby, and localized power decoupling, this board is an ideal plug-and-play solution for smart home voice devices, portable Bluetooth speakers, robotics sound generation, and embedded multimedia systems.
Key Features
- Selectable Class-AB / Class-D Operation: Hardware jumper (JP1) allows toggling between Class-D mode and Class-AB mode.
- Shutdown Feature For Low Power Consumption: Shutdown (SD) pin allows external microcontrollers to put the amplifier into a low-power standby state consuming less than 1µA.
- High Output Power Capability: Delivers up to 5W into 2Ω loads (3.5W into 3Ω, 3W into 4Ω) at a 5V supply voltage with low harmonic distortion.
- Capacitor-Free BTL Output with LC Filtering: Differential Bridge-Tied Load (BTL) drive eliminates bulky DC-blocking output capacitors, supported by onboard LC filter networks to attenuate high-frequency switching noise.
- Onboard Volume & Gain Adjustment: Equipped with a trimming potentiometer for input signal gain adjustment and volume control.
Technical Specifications
- Item
- B-AIP9971SE8-BRK
- Input Voltage
- 2.0V to 5.5V DC
- Amplifier Modes
- Selectable Class-D / Class-AB Modes via jumper (JP1) (Open: Class D / Closed: Class AB)
- Maximum Output Power
- 5W @ 2Ω / 3.5W @ 3Ω / 3W @ 4Ω (VDD = 5.0V, THD+N = 10%, f = 1kHz)
- Efficiency (Class-D)
- 80% (VDD = 5.0V, THD+N = 10%, f = 1kHz)
- Quiescent Current
- 8mA (Class-D) / 38mA (Class-AB, typ.)
- Shutdown Current
- \< 1 µA (When SD pulled high)
- Total Harmonic Distortion (THD+N)
- 0.1% (f = 1kHz, 2Vpp, no load)
- Signal-to-Noise Ratio (SNR)
- 60 dB (VIN = 2Vrms, f = 1kHz)
- Operating Temperature
- -20°C to +85°C (Recommended) / -40°C to +85°C (Operating limit)
- Board Dimensions
- 20x40mm
Support
For technical questions, documentation and issue reports, use the GitHub repository or write to us directly.