Analog Devices Inc./Maxim Integrated MAX98390DEVSYS#

Overview

MAX98390DEVSYS# from Maxim Integrated is an evaluation system for the MAX98390C and MAX98390D boosted Class D audio amplifier ICs with integrated Dynamic Speaker Management™ (DSM). It enables full characterization of speaker voltage/current sensing, real-time acoustic tuning, and 8-band equalization at up to 48kHz sample rate, targeting microspeaker-based portable audio systems.

For engineers reviewing the MAX98390DEVSYS# datasheet, MAX98390DEVSYS# pinout, MAX98390DEVSYS# application, or MAX98390DEVSYS# equivalent, this system supports rapid DSM parameter extraction, I²C register-level control, USB-audio playback via AUDINT3, and thermal-aware speaker protection validation - all with Windows 7/10 host compatibility and no external test equipment required.

Technical Context

The MAX98390DEVSYS# integrates two hardware boards: 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 provides 1.8V DVDD regulation, USB-to-PCM conversion, and USB-to-I²C bridging. The system operates with a single 5V input and delivers full digital audio path control without requiring external power supplies or signal generators.

DSM Sound Studio software implements a three-step workflow - Extract (speaker parameter identification), Tune (acoustic optimization including voice coil thermal and excursion protection), and Evaluate (A/B comparison of tuning profiles) - using real-time measurements from the onboard DS7505 ambient temperature sensor (I²C address 0x90) and MAX98390's internal current/voltage sensing circuitry.

Key Specifications

Availability

MAX98390DEVSYS# is available at Aetrix Electronics and suitable for portable audio design validation, speaker characterization labs, and embedded audio subsystem prototyping requiring stable component supply and full DSM feature evaluation.

Supply support for MAX98390DEVSYS# 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, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX98390DEVSYS# belongs to Maxim's audio evaluation platform product line, engineered specifically to accelerate development of DSM-enabled microspeaker systems in space-constrained portable devices.

FAQ

What does MAX98390DEVSYS# evaluate?

MAX98390DEVSYS# evaluates the MAX98390C and MAX98390D boosted Class D audio amplifier ICs with integrated Dynamic Speaker Management™. It provides complete hardware and software tools-including the DEV board, AUDINT3 interface board, reference microspeaker, DSM Sound Studio, and MAX98390 Evaluation Software-to validate speaker parameter extraction, real-time acoustic tuning, thermal protection, and full register-level configuration of the MAX98390 device.

Does MAX98390DEVSYS# require external audio sources or test equipment?

No. MAX98390DEVSYS# eliminates the need for external audio generators or oscilloscopes by integrating USB-to-PCM functionality via the included AUDINT3 board. When connected to a Windows PC, it accepts USB audio streams (e.g., from Windows Media Player or iTunes) and routes them directly to the MAX98390C/D for playback through the reference microspeaker - enabling full functional validation with only a PC and the provided 5V power supply.

How is DSM tuning performed using MAX98390DEVSYS#?

DSM tuning with MAX98390DEVSYS# is performed using DSM Sound Studio software, which guides users through three steps: Extract (automated measurement of speaker parameters like Re, Le, Bl, and Vas), Tune (graphical adjustment of 8-band EQ, dynamic range compression, voice coil thermal limits, and excursion protection), and Evaluate (side-by-side comparison of tuning profiles). All tuning data is applied in real time to the MAX98390 device via I²C.

Can MAX98390DEVSYS# be used without the AUDINT3 board?

Yes. The MAX98390DEVSYS# DEV board can operate standalone: digital audio may be applied via the J2 DAI header (MCLK, BCLK, LRCLK, DIN, DOUT), power supplied externally to VBAT and DVDD test points, and I²C control implemented via external controller on J2's SDA/SCL pins. However, full USB-audio streaming, automatic DVDD regulation, and seamless software integration require the AUDINT3 board as part of the MAX98390DEVSYS# system.

What software is included with MAX98390DEVSYS# and what are its key capabilities?

MAX98390DEVSYS# includes two Windows-compatible applications: DSM Sound Studio (for intuitive, GUI-driven speaker modeling and acoustic tuning) and MAX98390 Evaluation Software (for low-level register access, interrupt monitoring, ambient temperature reading, and firmware-controlled configuration). Both support Windows 7 and 10, communicate over USB/I²C via the AUDINT3 bridge, and provide full visibility into MAX98390's hardware state - including raw/flag/state interrupts, revision ID, and real-time current/voltage sensing data.