The SSM2302 is a fully integrated, high efficiency, Class-D stereo audio amplifier. It is designed to maximize performance for mobile phone applications. The application circuit requires only an external speaker, a capacitor, and a diode. The amplifier provides 1.4 W of power output and 85% efficiency, providing high-fidelity audio for mobile phones.
The SSM2302 from Analog Devices is a fully integrated, filter‑less Class‑D stereo audio amplifier designed for mobile and portable electronics. It operates from a single 2.5 V to 5.0 V supply and delivers up to 1.4 W into an 8 Ω load with less than 1 % THD.
Key features include built‑in pop‑and‑click suppression, ultra‑low 20 nA shutdown current, selectable 6 dB or 12 dB gain, and high‑efficiency operation (85 % at 1.4 W). The device is offered in a 16‑lead 3 mm × 3 mm LFCSP package.
| Output Power | 1.4 W into 8 Ω at 5.0 V |
|---|---|
| Signal‑to‑Noise Ratio | > 98 dB |
| Shutdown Current | 20 nA |
| Supply Voltage Range | 2.5 V to 5.0 V |
| Gain Options | 6 dB or 12 dB selectable |
The device has an ultralow shutdown current of 20 nA.
It operates from a single supply of 2.5 V to 5.0 V.
The SNR is better than 98 dB.