Stereo 2.1W Class D Audio Amplifier - TPA2012

This small stereo amplifier delivers 2 x 2.1W into 4Ω speakers with 10% THD and operates between 2.7V-5.5VDC. It’s highly efficient (89%) and ideal for portable projects. The amp includes thermal and over-current protection. It uses differential inputs with 1.0µF capacitors and bridge-tied outputs, which prevent high-frequency sounds from being heard. It comes fully assembled with a mini DIP switch for adjusting gain, and 3.5mm screw terminals for speaker connections. Compatible with 4Ω or 8Ω impedance speakers.

Specifications:

• Output Power: 2.1W (4Ω), 1.4W (8Ω) at 5V supply, 10% THD
• PSRR: 77 dB typical @ 217 Hz with 6 dB gain
• No Output Filter: Works best with short wires (2"-4")
• Gain Options: 6dB, 12dB, 18dB, and 24dB, selected via onboard switches or breakout pins
• Additional Features: Click-and-pop suppression, thermal shutdown, independent channel shutdown
• Low Power Consumption: 6mA in quiescent, 1.5uA in shutdown mode
• Note: Terminal blocks may be blue or black