Quick Start; Required Equipment; Reference Material - Analog Devices MAX98366 Series User Manual

Evaluation Board User Guide

Quick Start

Note: In the following sections, text in bold and underlined refers to items from the Windows operating system.

Required Equipment

•
MAX98366 EV System
• MAX98366 Development Board (DEV Board)
• Audio Interface Board III (AUDINT3 Board)
• Micro-USB Cable
•
DC Power Supply (3V to 15V, 4A)
•
4Ω to 8Ω Speaker
• ®
PC with Windows 7 or Windows 10 with Available USB Port
•
USB Audio Source (e.g., Spotify

Reference Material

•
MAX98366 IC data sheet
Procedure
The MAX98366 and AUDINT3 boards are fully assembled and tested. Follow the steps below to set up the EV system
for device evaluation.
AUDINT3 Board Setup:
1. Connect the MAX98366 DEV board (J1 connector) to the AUDINT3 board (J1 connector). It is important to ensure the
two boards' connectors are properly aligned to avoid damage. The bottom row of both J1 connectors should be lined
up so the standoffs on the corners of the AUDINT3 and DEV board are level.
2. With the audio source disabled, connect the Micro-USB cable from your computer to the USB port (J2) on the
AUDINT3 board. The AUDINT3 board provides the BCLK and LRCLK signals as well as the power for VDDIO,
sourcing 1.8V to the DEV board through the J1 connector.
3. The multi-color LED D1 initially flashes blue, and then should change to slow flashing magenta when the computer
successfully registers the AUDINT3 as a USB audio playback device.
DEV Board Setup:
1. Connect the AUDINT3 VDD jumper. Place one shunt on jumper J13 across pins labeled 1.8V and VDD. This allows
the AUDINT3 to provide 1.8V to the VDD pin on MAX98366.
2
2. Configure the I S channel jumper. Place a triple shunt on jumper J5, DAI C for mono-mix. Remove any shunts from
J4, J3, and J2.
3. Set the GAIN_SLOT jumper. Place one shunt on jumper J7 for desired gain (can use 21.5dB for PVDD = 15V).
4. Place the shunt on jumper J6 across pins VDD and EN.
5. Connect the speaker. Connect the speaker leads across the FOUTP and FOUTN binding posts.
6. Connect PVDD. With the DC supply not powered, connect the 3V to 15V power supply across the PVDD and GND
binding posts.
USB Audio Playback Test:
1. Enable the PVDD supply voltage (3V to 15V, 4A).
2. In the Window's Sound Settings set the "Maxim AUDINT003 ADC1.0" option as your output device, as seen in
Figure 2.
3. Once done, the AUDINT3 board outputs PCM data to the DIN pin on the DEV board.
4. Adjust the audio source volume to a low level.
5. Enable the audio source and verify that audio is heard through the connected speaker. Adjust the audio source
volume as needed.
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