Analog Devices Inc./Maxim Integrated MAX98372EVSYS#

Overview

MAX98372EVSYS# from Maxim Integrated is a digital input mono Class D audio amplifier with Dynamic Headroom Tracking (DHT) and brownout protection, operating from 5.5V to 18V supply, delivering 15.7W into 8Ω at 1% THD+N (V_PVDD = 17V), and featuring I²S/TDM/Left-justified interface support up to 96kHz for notebook, soundbar, and tablet audio subsystems.

For engineers reviewing the MAX98372EVSYS# datasheet, MAX98372EVSYS# pinout, MAX98372EVSYS# application, or MAX98372EVSYS# equivalent, key selection criteria include DHT-enabled consistent output headroom under varying PVDD, filterless operation via edge-rate control, thermal foldback in WLP package, 110dB A-weighted SNR, and I²C-configurable 16-slave-address capability.

Technical Context

The MAX98372EVSYS# implements a digitally controlled Class D amplifier core with integrated 8-bit PVDD ADC for real-time DHT calculation, eliminating need for external MCLK in PCM modes. Its clocking architecture supports sample rates from 32kHz to 96kHz across I²S, left-justified, and TDM formats - up to 16 channels in TDM mode.

Control is exclusively via standard 2-wire I²C interface with user-selectable slave address (16 options via two 4-level pins). Thermal management combines programmable thermal foldback (reducing output power above threshold) and traditional thermal shutdown, alongside robust overcurrent and brownout protection via ALC circuitry.

Key Specifications

Availability

MAX98372EVSYS# is available at Aetrix Electronics and suitable for notebook computers, soundbars, and tablets requiring stable component supply, rapid evaluation turnaround, and full-system audio subsystem validation.

Supply support for MAX98372EVSYS# 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 precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and consumer applications.

The MAX98372EVSYS# belongs to Maxim's high-efficiency audio amplifier product line, engineered specifically for compact, battery-aware, high-SNR digital-input speaker drivers in portable and AC-powered consumer audio equipment.

FAQ

What is the primary function of the MAX98372EVSYS#?

The MAX98372EVSYS# is an evaluation system for the MAX98372 mono Class D audio amplifier IC. It provides a fully assembled, tested platform to validate the IC's performance-including Dynamic Headroom Tracking, brownout protection, and filterless operation-in real-world audio designs before full-scale integration. The MAX98372EVSYS# enables rapid prototyping of speaker driver circuits using the underlying MAX98372 device.

Does the MAX98372EVSYS# require external programming to enable DHT?

No, the MAX98372EVSYS# does not require external programming to enable Dynamic Headroom Tracking (DHT). DHT is implemented autonomously by the MAX98372 IC using its integrated 8-bit PVDD ADC and internal logic. The MAX98372EVSYS# board exposes this functionality out-of-box, allowing immediate evaluation of supply-voltage-adaptive headroom optimization without firmware development or register configuration.

Can the MAX98372EVSYS# support TDM audio with more than two channels?

Yes, the MAX98372EVSYS# supports TDM audio with up to 16 channels, as enabled by the underlying MAX98372 IC's TDM interface capability. The evaluation system routes all necessary signals (BCLK, LRCLK, DATA) to accommodate multi-channel TDM frame structures, and its onboard configuration jumpers allow users to set slot count and data alignment per the MAX98372's TDM mode specifications.

What thermal protection features are accessible on the MAX98372EVSYS#?

The MAX98372EVSYS# demonstrates both thermal foldback and thermal shutdown behaviors of the MAX98372 IC. Thermal foldback reduces output power progressively above a user-defined temperature threshold to sustain uninterrupted audio playback; thermal shutdown halts operation entirely if safe junction limits are exceeded. These are hardware-based protections activated internally by the MAX98372 die and observable via thermal monitoring pins on the MAX98372EVSYS# board.

Is an external MCLK required when using the MAX98372EVSYS# with I²S input?

No, an external MCLK is not required when using the MAX98372EVSYS# with I²S input. The MAX98372 IC employs a unique clocking architecture that derives all necessary timing from BCLK and LRCLK alone, eliminating the need for MCLK in standard I²S, left-justified, or TDM modes. This simplifies layout and reduces pin count - a feature directly validated on the MAX98372EVSYS# evaluation platform.