This document is a datasheet for the SSM3582, a digital input, filterless stereo class-D audio amplifier. The amplifier features high efficiency, low distortion, low noise, and support for various loads. It also offers low power consumption.
The SSM3582 is a fully integrated, high efficiency, digital input stereo Class-D audio amplifier designed for mobile computing and portable electronics. It utilizes a proprietary, spread spectrum Σ-Δ modulation scheme that enables direct connection to the speaker without external filters, ensuring state-of-the-art analog performance while lowering radiated emissions.
The device operates from a single supply voltage ranging from 4.5 V to 16 V and delivers up to 31.76 W in mono mode into a 2 Ω load at less than 1% THD + N. It supports multiple PCM audio serial data formats, including I2S, left justified, and TDM, with support for up to 16 devices on a single bus. Control is managed via a dedicated I2C interface or hardware modes.
| Supply Voltage Range | 4.5 V to 16 V |
|---|---|
| Signal-to-Noise Ratio | 106.5 dB |
| Total Harmonic Distortion + Noise (THD+N) | 0.004% at 5 W into 8 Ω |
| Output Power (Stereo, 16V, 8Ω) | 2 × 14.4 W |
| Output Power (Mono, 16V, 2Ω) | 31.76 W |
| Package Type | 40-lead LFCSP with thermal pad |
| Operating Temperature Range | -40°C to +85°C |
The amplifier operates from a single 4.5 V to 16 V supply.
No, it uses state-of-the-art proprietary filterless Σ-Δ modulation.
It supports I2S, left justified, and time division multiplexing (TDM).