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PUI Audio AMP1X2 & AMP2X2 Audio Amplifier Evaluation Boards

PUI Audio AMP1X2 and AMP2X2 Audio Amplifier Evaluation Boards deliver 2W per channel into 8Ω loads and 4W per channel into 4Ω loads at <1% THD+N, while using a 7V DC supply. These boards provide low quiescent current, thermal overload protection, and short-circuit protection. The AMP1X2 audio amplifier board features a MAX9768 Class-D mono amplifier for maximum signal fidelity. The AMP2X2 audio amplifier board features a MAX9744 Class-D stereo amplifier circuit for maximum signal fidelity. These amplifier boards measure 38mm x 38mm and include 100mil header pins for simplified prototyping and system integration.

Features

  • 2W per channel into 8Ω loads
  • 4W per channel into 4Ω loads
  • Low quiescent current
  • Thermal overload protection
  • Short-circuit protection
  • Logic power supply range:
    • 7mA subsystem power supply current (VDD = 3.3V)
    • 4mA amplifier power supply current (PVDD = 7V)
    • POUT = 2W into 8Ω (THD < 1%, VDD = 7V)
    • POUT = 4W into 4Ω (THD < 1%, VDD = 7V)
  • 7V ≤ PVDD ≤ 9V amplifier power supply range
  • 2.7V ≤ PVDD ≤ 3.6V subsystem power supply voltage range
  • External resistors adjust the amplifier gain
  • 1.8V logic-compatible SHDN input
  • 100mil spaced header pins for input, output, shutdown, power supply, and ground connections

Dimensions

Mechanical Drawing - PUI Audio AMP1X2 & AMP2X2 Audio Amplifier Evaluation Boards

Additional Resources

Published: 2026-01-30 | Updated: 2026-02-05