Key benefits Safe, singlesupply audio drive module with a wide input range for flexible applications. Protects the internal chip from overvoltage; recommended not to exceed 26V. Compatible with common speaker loads: 42ohm and 8ohm, with loadspecific maximum supply voltages. Suitable for lowlevel audio signals: accepts input in the 0.5V to 1.5V range. Keeps wiring simple and reduces noise by recommending a speaker cable length no longer than 1 meter. Requires a power supply capable of 2A or more for reliable operation. Clear polarity handling: correct and connections are required; module operates on a single supply and cannot be connected to a negative power rail. Technical specifications Recommended power supply voltage: 824V DC Maximum supply voltage to avoid chip damage: 26V Speaker load and maximum supply: 42ohm speaker: max 16V 8ohm speaker: max 24V Input audio signal level: 0.5V to 1.5V Speaker cable length: up to 1 meter Recommended power supply current: 2A or more Polarity and supply type: do not reverse polarity; single power supply only; not compatible with a negative power supply Precautions for use Do not connect the power supply with reverse polarity; this will damage the chip. Use a single positive supply; do not connect to a negative rail. Keep the supply voltage within the specified range (824V, not exceeding 26V). When using a 42ohm speaker, ensure the supply does not exceed 16V; for an 8ohm speaker, ensure the supply does not exceed 24V. Keep speaker cable length within 1 meter to maintain performance and reduce interference. Use scenarios DIY desktop speaker amplifier: powered from a 12V DC supply, driving an 8ohm speaker with input from a standard audio source (0.5V1.5V). Uses a singlesupply setup with 2A or higher capability for stable output. Portable hobby project: batterypowered system (within 824V) driving a 42ohm speaker to minimize current draw; suitable for compact, lownoise audio alerts or simple sound output. Microcontrollerbased audio notification: compact singlesupply module integrated into a project with a 512V source; uses a lowlevel audio signal (0.5V1.5V) to drive a small speaker.