This document introduces a 30W digital audio amplifier from Cirrus Logic. The amplifier has fully integrated power MOSFETs, no heatsink required, high efficiency, greater than 100 dB dynamic range, less than 0.1% THD+N @ 1W, configurable outputs, and other features.
This document describes the CS4525 30 W digital audio amplifier with an integrated 24‑bit stereo ADC. It outlines the device’s architecture, power‑output configurations, and built‑in protection features such as over‑current, undervoltage, and thermal shutdown.
The manual includes pin‑out tables for software and hardware modes, typical connection diagrams, register maps, PCB layout recommendations, thermal characteristics, and ordering information, enabling designers to integrate the amplifier into audio systems such as TVs, monitors, and powered speakers.
| Maximum Output Power | 30 W |
|---|---|
| Dynamic Range | 100 dB |
| THD+N at 1 W | < 0.1 % (0.001) |
| ADC Dynamic Range (A‑weighted) | 95 dB |
| ADC THD+N | -86 dB |
| Power Output Configurations | 1×30 W into 4 Ω (parallel full‑bridge), 2×15 W into 8 Ω (full‑bridge), 2×7 W into 4 Ω (half‑bridge) + 1×15 W into 8 Ω (full‑bridge) |
| Junction‑to‑Case Thermal Impedance | 8 °C/W |
The CS4525 can deliver up to 30 W of continuous output power.
The device includes over‑current, undervoltage, thermal overload shutdown, and thermal warning reporting.
The integrated ADC provides a 95 dB A‑weighted dynamic range.