The MAX98304 mono 3.2W Class D amplifier provides Class AB audio performance with Class D efficiency. This device offers five selectable gain settings (0dB, 3dB, 6dB, 9dB, and 12dB) set by a single gain-select input (GAIN). Active emissions-limiting, edge-rate, and overshoot control circuitry greatly reduces EMI. A filterless spread-spectrum modulation scheme eliminates the need for output filtering found in traditional Class D devices. These features reduce application component count. The IC's 0.95mA at 3.7V (1.2mA at 5V) quiescent current extends battery life in portable applications. The IC is available in a 9-bump (1.0mm x 1.0mm) WLP with 0.3mm pitch that is specified over the extended -40NC to +85NC temperature range.
The MAX98304 is a mono 3.2 W Class D audio amplifier that delivers Class AB performance with Class D efficiency. It features five selectable gain settings, active emissions‑limiting, spread‑spectrum modulation, and click‑and‑pop suppression, enabling low component count and high audio quality.
Typical applications include notebook and netbook computers, cellular phones, tablets, MP3/portable audio players, and VoIP phones. The device is offered in a 9‑bump 1.0 mm × 1.0 mm WLP package (0.3 mm pitch) rated for –40 °C to +85 °C operation.
| Quiescent Current | 0.95 mA at 3.7 V |
|---|---|
| Operating Temperature Range | -40 °C to +85 °C |
| Output Current Limit | 2.8 A (typ) |
| THD+N | 1 % at 5 V supply |
| Gain Settings | 0 dB, 3 dB, 6 dB, 9 dB, 12 dB |
| Maximum Output Power | 1.75 W into 8 Ω at 5 V |
The device draws 0.95 mA at a 3.7 V supply.
It offers five selectable gains: 0 dB, 3 dB, 6 dB, 9 dB, and 12 dB.
The amplifier can deliver up to 1.75 W into an 8 Ω load when powered from 5 V.
It operates from –40 °C up to +85 °C.