Analog Devices Inc./Maxim Integrated MAX98300EVKIT+WLP

Overview

MAX98300EVKIT+WLP from Maxim Integrated is an evaluation kit for the MAX98300 mono 2.6W Class D audio amplifier IC, supporting rapid prototyping of filterless speaker drive in space-constrained portable devices. It enables validation of five selectable gain settings (0dB to 12dB), ultra-low quiescent current (0.78mA at 3.7V), spread-spectrum modulation (300kHz ±10kHz), and EMI-reduced operation without external LC filters.

For engineers reviewing the MAX98300EVKIT+WLP datasheet, MAX98300EVKIT+WLP pinout, MAX98300EVKIT+WLP application, or MAX98300EVKIT+WLP equivalent, this kit provides verified reference design, thermal management layout guidance, shutdown waveform characterization, and THD+N vs. output power validation across 4Ω and 8Ω loads at 3.7V and 5V supply rails.

Technical Context

The MAX98300EVKIT+WLP implements a complete functional test platform for the MAX98300 WLP-packaged amplifier, including PVDD bypassing (0.1µF + 10µF), input coupling network, and direct connection to a 1.2mm × 1.2mm 9-bump WLP device with 0.4mm pitch. It validates the IC's patented active emissions-limiting edge-rate control and filterless operation up to 2.6W into 4Ω at 10% THD+N.

This kit supports full characterization of gain-select logic (GAIN pin tied to PVDD/PGND or via 100kΩ), click-and-pop suppression timing (startup/shutdown waveforms), and thermal shutdown behavior (trip at +160°C, 20°C hysteresis) under real-world load conditions using standard 8Ω or 4Ω speakers with series inductance ≥10µH.

Key Specifications

Availability

MAX98300EVKIT+WLP is available at Aetrix Electronics and suitable for notebook computers, VoIP phones, portable audio players, and cellular handsets requiring stable component supply and fast-turn evaluation of miniature audio amplifiers.

Supply support for MAX98300EVKIT+WLP 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 is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management solutions for portable, industrial, and communications applications.

The MAX98300 product line delivers ultra-low-power, filterless Class D audio amplification targeting battery-operated consumer devices where board area, EMI compliance, and runtime are critical constraints.

FAQ

What is the primary function of the MAX98300EVKIT+WLP?

The MAX98300EVKIT+WLP is an evaluation kit designed exclusively to validate the electrical and thermal performance of the MAX98300EWL+ mono Class D audio amplifier in its 9-bump WLP package. It provides a fully assembled, tested PCB with input/output interfaces, bypass capacitors, and test points to measure quiescent current, THD+N, efficiency, and shutdown behavior under real-world speaker loads.

Does the MAX98300EVKIT+WLP support both TDFN and WLP packages of the MAX98300?

No. The MAX98300EVKIT+WLP is specifically configured for the MAX98300EWL+ variant in the 9-bump WLP package (1.2mm × 1.2mm, 0.4mm pitch). It does not support the 8-pin TDFN-EP variant (MAX98300ETA+); that device requires the separate MAX98300EVKIT#TDFN evaluation platform.

How does the MAX98300EVKIT+WLP demonstrate filterless Class D operation?

The MAX98300EVKIT+WLP validates filterless operation by driving standard 4Ω or 8Ω speakers directly-without external LC output filters-while meeting EN55022B EMI limits. Its layout incorporates optimized ground planes, wide output traces, and shielded input routing to confirm the MAX98300's patented spread-spectrum modulation (300kHz ±10kHz) and edge-rate control suppress radiated emissions inherently.

Can the MAX98300EVKIT+WLP be used to evaluate gain configuration and click-and-pop suppression?

Yes. The MAX98300EVKIT+WLP includes jumper-selectable GAIN pin configurations (PVDD, PGND, or 100kΩ pull-up/down) to verify all five gain settings (0dB to 12dB). It also provides oscilloscope test points on OUT+ and OUT− to capture startup/shutdown waveforms, confirming the MAX98300's internal click-and-pop suppression reduces audible transients to <−66dBV (A-weighted).

What thermal validation capabilities does the MAX98300EVKIT+WLP provide?

The MAX98300EVKIT+WLP enables thermal validation of the MAX98300EWL+ under sustained load, including measurement of junction temperature rise, thermal shutdown activation at +160°C, and 20°C hysteresis recovery. Its PCB layout uses thermal vias beneath the WLP pad and copper pours to replicate production-level heat dissipation, supporting reliability assessment for portable audio designs.