**SSM4567ACBZ-R7: High-Performance, 4W, Mono Class D Audio Amplifier with Advanced EMI Suppression**

In the demanding world of audio electronics, achieving a balance between high-fidelity output, power efficiency, and minimal electromagnetic interference (EMI) is a significant challenge. The **SSM4567ACBZ-R7** stands out as a monolithic, Class D audio amplifier engineered specifically to master this balance. This device integrates **advanced EMI suppression techniques** with robust performance characteristics, making it an ideal solution for space-constrained, noise-sensitive portable applications such as smartphones, tablets, Bluetooth speakers, and wearable devices.

At its core, the amplifier delivers **up to 4W of continuous output power** into a 3Ω load with less than 1% THD+N when powered from a 5V supply. This high power density is a hallmark of its Class D architecture, which typically achieves efficiencies greater than 90%. This exceptional efficiency translates directly into **extended battery life** and reduced heat generation, eliminating the need for large heat sinks and enabling more compact and sleeker product designs.

A defining feature of the SSM4567ACBZ-R7 is its sophisticated integrated **Advanced EMI Suppression** technology. EMI has traditionally been a major drawback of Class D amplifiers' switching topology, often causing interference with nearby radios (RF), sensors, and other critical circuits. This amplifier addresses this issue head-on with a combination of spread-spectrum modulation and optimized switching edge rates. These techniques significantly reduce peak EMI emissions, simplifying the task of passing stringent regulatory certifications (like FCC and CISPR) and minimizing the need for complex external filtering components.

Beyond its EMI performance, the amplifier offers a high-quality audio experience. It features a low-noise modulator and a **superior Power Supply Rejection Ratio (PSRR)**, ensuring clean audio playback even in the presence of noisy power rails commonly found in battery-operated devices. Its flexible architecture supports a single-ended analog input and provides a filter-free operation, further reducing the external component count and total solution size. The device also includes a full suite of protection features, including thermal shutdown and overcurrent protection, safeguarding both the amplifier and the connected speaker from fault conditions.

ICGOODFIND: The SSM4567ACBZ-R7 is a comprehensive audio solution that excels in performance, efficiency, and integration. Its built-in advanced EMI suppression is a critical advantage, allowing designers to achieve excellent audio quality and **simplified system design** while meeting strict electromagnetic compatibility requirements. It is a top-tier choice for powering the next generation of high-performance portable audio products.

**Keywords:** Class D Amplifier, EMI Suppression, High Efficiency, Portable Audio, Filter-Free Operation.