The MAX98314 mono 3.2W Class D amplifier provides Class AB audio performance with Class D efficiency.
The MAX98314 is a mono 3.2 W Class D audio amplifier that delivers Class AB sound quality with Class D efficiency. It integrates input coupling capacitors, offers five selectable gain settings, and includes active emissions limiting and spread‑spectrum modulation to reduce EMI without an external output filter.
Key features include a low quiescent current (0.95 mA at 3.7 V, 1.2 mA at 5 V), up to 93 % efficiency, thermal and over‑current protection, and a compact 9‑bump WLP package (0.3 mm pitch, 1.0 mm × 1.0 mm × 0.80 mm). The device operates from 2.5 V to 5.5 V and is rated for -40 °C to +85 °C.
| Quiescent Current | 0.95 mA at 3.7 V, 1.2 mA at 5 V |
|---|---|
| Efficiency | up to 93 % |
| Gain Settings | 0 dB, 3 dB, 6 dB, 9 dB, 12 dB |
| Package | 9‑bump WLP, 0.3 mm pitch, 1.0 mm × 1.0 mm × 0.80 mm |
| Operating Temperature Range | -40 °C to +85 °C |
The device draws 0.95 mA at 3.7 V and 1.2 mA at 5 V supply voltage.
It offers five selectable gain settings: 0 dB, 3 dB, 6 dB, 9 dB, and 12 dB.
No, the amplifier uses a filter‑less spread‑spectrum modulation that eliminates the need for an external output filter.
The device is specified for operation from –40 °C to +85 °C.