MAX9715 is the second generation of Maxim's high efficiency Class D audio power amplifier, providing up to 2.8W per channel into a 4Ω speaker with a 5V supply.
The MAX9715 is a high‑efficiency, stereo Class D audio power amplifier that operates from a single 5 V supply and delivers up to 2.8 W per channel into a 4 Ω or 8 Ω speaker. It features selectable gain (+9 dB or +10.5 dB), a 71 dB PSRR at 1 kHz, 86 % efficiency, and integrated protection such as short‑circuit, thermal overload, and low‑power shutdown.
The device is offered in a space‑saving 16‑pin TQFN‑EP package and includes spread‑spectrum modulation to reduce EMI without requiring an output filter. Layout recommendations, grounding practices, and optional output filtering options are provided to ensure optimal performance in notebook audio, LCD projectors, portable audio, and multimedia docking stations.
| Quiescent Current (no load) | 12.8 mA – 16 mA |
|---|---|
| Maximum Output Power | 2.8 W per channel |
| Total Harmonic Distortion + Noise | 0.06 % at 1 kHz |
| Power‑Supply Rejection Ratio (PSRR) | 71 dB at 1 kHz |
Gain can be set to +9 dB or +10.5 dB via the GAIN pin.
No, the amplifier uses spread‑spectrum modulation and does not require an external LC output filter.