Analog Devices Inc./Maxim Integrated MAX98390EVSYS#

Overview

MAX98390EVSYS# from Maxim Integrated is an evaluation system designed to fully characterize the MAX98390C or MAX98390D boosted Class D audio amplifier IC with integrated Dynamic Speaker Management™ (DSM). It delivers up to 4.5W into 4Ω, supports I²S/TDM/Left-Justified digital audio input, operates from 2.65V–5.5V VBAT, and enables real-time speaker parameter extraction and acoustic tuning via DSM Sound Studio software.

For engineers reviewing the MAX98390EVSYS# datasheet, MAX98390EVSYS# pinout, MAX98390EVSYS# application, or MAX98390EVSYS# equivalent, this system provides complete hardware-software integration for rapid validation of DSM-enabled speaker performance, USB-audio playback, register-level control, and thermal-aware audio design in space-constrained portable devices.

Technical Context

The MAX98390EVSYS# comprises two tightly coupled PCBs: the MAX98390C/D development board (featuring SPKP/SPKN speaker outputs, J2 DAI header with MCLK/BCLK/LRCLK/DIN/DOUT, and JU1 reset jumper) and the Audio Interface Board III (AUDINT3), which supplies 1.8V DVDD, converts USB audio to PCM/I²S, and bridges USB-to-I²C for host control.

DSM functionality is exercised through preinstalled DSM Sound Studio (Windows 7/10), enabling speaker parameter extraction, 8-band EQ tuning, voice-coil thermal protection configuration, and side-by-side tuning comparison - all using the included reference microspeaker and ambient temperature sensor (DS7505 at I²C address 0x90).

Key Specifications

Availability

MAX98390EVSYS# is available at Aetrix Electronics and suitable for audio subsystem validation, speaker characterization, DSM algorithm prototyping, and USB-audio reference design requiring stable component supply and full toolchain support.

Supply support for MAX98390EVSYS# includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Maxim Integrated, now part of Analog Devices, designs high-performance analog and mixed-signal semiconductor solutions for power, audio, sensing, and interface applications.

The MAX98390EVSYS# belongs to Maxim's audio evaluation platform family, engineered specifically to accelerate development of DSM-enabled smart speakers, wearables, and compact audio endpoints where speaker protection, thermal awareness, and acoustic optimization are critical.

FAQ

What does MAX98390EVSYS# evaluate?

MAX98390EVSYS# evaluates the MAX98390C or MAX98390D boosted Class D audio amplifier IC with integrated Dynamic Speaker Management™. It includes both the development board and Audio Interface Board III (AUDINT3), enabling full functional validation of DSM speaker tuning, I²S/TDM audio playback, register-level configuration, and thermal-aware audio output - all using the included reference microspeaker and Windows-based software tools.

Does MAX98390EVSYS# support USB audio playback?

Yes, MAX98390EVSYS# supports USB audio playback via the included Audio Interface Board III (AUDINT3), which converts USB audio streams from a Windows PC into I²S format for the MAX98390C/D. The system appears as "Maxim AUDINT003" in Windows Sound settings, and the MAX98390 evaluation software configures the device for seamless USB-audio operation using preinstalled configuration files like usb_audio_48kHz.98390.

What software is included with MAX98390EVSYS#?

MAX98390EVSYS# includes two dedicated Windows applications: DSM Sound Studio (for speaker parameter extraction, 8-band EQ tuning, thermal protection setup, and quick demo playback) and the MAX98390 Evaluation Software (for direct read/write access to all hardware registers including Control, DSP, and Interrupt registers). Both tools run on Windows 7 and Windows 10 and require no additional drivers beyond standard USB CDC/ACM support.

Can MAX98390EVSYS# be used without the AUDINT3 board?

Yes, MAX98390EVSYS#'s development board can operate standalone: audio test equipment may drive the J2 DAI header (BCLK/LRCLK/DIN/DOUT/MCLK), external supplies may power VBAT and DVDD, and an external I²C controller may configure registers via J2's SDA/SCL pins. However, full DSM functionality, USB audio, and simplified setup require the AUDINT3 board - which provides DVDD regulation, USB-to-PCM conversion, and USB-to-I²C bridging.

How is speaker temperature measured during DSM evaluation?

MAX98390EVSYS# uses the DS7505 ambient temperature sensor (U2) mounted directly on the development board, permanently configured at I²C address 0x90. The MAX98390 evaluation software reads this sensor via the "Read Ambient Temperature" button in its toolbar, and DSM Sound Studio uses the reported value to calibrate room-temperature conditions for accurate speaker thermal modeling and voice-coil protection tuning.