This document introduces the ADAU1592 audio power amplifier, including its features, characteristics, applications, etc.
The ADAU1592 is a 2‑channel, bridge‑tied‑load (BTL) switching audio power amplifier that integrates a Z‑A modulator and a programmable gain amplifier. It accepts analog inputs, generates a high‑efficiency switching output, and provides digital control for reset, mute, gain, and fault monitoring. The device operates from 9 V to 18 V supply voltages and uses a 3.3 V analog and digital supply.
The datasheet includes detailed specifications such as output power, efficiency, THD+N, SNR, supply voltage ranges, pin configurations, timing diagrams, thermal ratings, and ordering information for multiple package options.
| Efficiency @ 18 W | 87 % |
|---|---|
| Analog Supply Voltage (AVDD) | 3.0 V – 3.6 V |
| Digital Supply Voltage (DVDD) | 3.0 V – 3.6 V |
| Power Transistor Supply Voltage (PVDD) | 9 V – 18 V |
The power‑stage supply (PVDD) can be between 9 V and 18 V.
It includes short‑circuit protection, over‑temperature protection, over‑current shutdown, undervoltage shutdown, mute and shutdown control.
Typical efficiency is 87 % when delivering 18 W.