This document describes the features and characteristics of Analog Devices' 2 W filterless Class-D stereo audio amplifier SSM2306. The amplifier features built-in output stage, ultra-low idle current, high efficiency, high signal-to-noise ratio, etc. It is suitable for applications such as mobile phones, MP3 players, portable gaming devices, portable electronics, etc.
The SSM2306 is a fully integrated, filter‑less Class‑D stereo audio amplifier designed for portable applications. It operates from a single 2.5 V to 5.0 V supply and delivers up to 2 W into a 4 Ω load with ultralow idle current and built‑in protection features.
Typical applications include mobile phones, MP3 players, portable gaming devices, notebook computers and other portable electronics. The device offers >87 % efficiency at 1.4 W into 8 Ω, a signal‑to‑noise ratio better than 96 dB, and a shutdown current of only 20 nA.
| Efficiency at 1.4 W (8 Ω) | 85 % |
|---|---|
| Shutdown Current | 20 nA |
| Supply Voltage Range | 2.5 V – 5.0 V |
| Signal‑to‑Noise Ratio | ≥96 dB |
The device has a typical shutdown current of 20 nA.
It operates from a single supply voltage of 2.5 V to 5.0 V.
The efficiency is about 85 % at 1.4 W into 8 Ω.