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MAXREFDES9009: MAX98365 8-Channel Reference Design

MAXREFDES9009

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Reference Guide

Description

The MAXREFDES9009 is a reference design for a simple, compact, 8-channel digital input audio amplifier, and can deliver up to 14W per channel into an 8Ω load. It is based on the MAX98365, which is a tiny, cost-effective, 14V plug-and-play digital input Class-D amplifier. This design is true plug-and-play and does not require any programming of registers and does not use I2C. Just add power and input signal to get 8-channels of Class-D audio output.

Features

  • True plug-and-play 8-channel digital audio input Class-D amplifier
  • Simple to use and does not require any programming, registers, and I2C
  • Gain is preset to 21.5dB
  • Just add the following:
    • Power: VDD (1.8V, 3.3V, or 5V), PVDD (3V-14V)
    • Input signal: (digital audio, 16-bit or 32-bit TDM, and 8kHz-192kHz sample rate)
    • 8 Speakers
 

Schematic

schematic

Download the full circuit schematic.

PCB Layout

pcb-layout

Download printed circuit board layout information.

BOM

bom

Review the bill of materials used to build this design.

Maxim Devices (1)

Part Number Name Product Family Order Design kits and evaluation modules
MAX98365 Tiny, Cost-Effective, 14V Plug-and-Play Digital Class-D Amplifier Audio Buy Now

Maxim Devices (1)

Part Number Product Family
Audio
Tiny, Cost-Effective, 14V Plug-and-Play Digital Class-D Amplifier

Design Files (3)

Title Type Size Date
MAXREFDES9009 BOM XLSX 25KB 2022-06-02
MAXREFDES9009 Schematic PDF 551KB 2022-06-02
MAXREFDES9009 PCB Layout PDF 2MB 2022-06-02
Date Type
2022-06-02

MAXREFDES9009 BOM

(XLSX, 25KB)

2022-06-02

MAXREFDES9009 Schematic

(PDF, 551KB)

2022-06-02

MAXREFDES9009 PCB Layout

(PDF, 2MB)

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