Analog Devices Inc./Maxim Integrated MAX98361DEVSYS#WLP

Overview

MAX98361DEVSYS#WLP from Analog Devices is a fully assembled evaluation system for the MAX98361D mono Class-D audio amplifier in WLP package, supporting left-justified digital audio input, 2.5V–5.5V VDD supply, 1.2V–VDD VDDIO logic interface, and filterless 4Ω/8Ω speaker drive. It enables rapid validation of audio performance, gain selection (–3dB to 12dB), channel routing (left/right/mono mix), and TDM mode operation.

For engineers reviewing the MAX98361DEVSYS#WLP datasheet, MAX98361DEVSYS#WLP pinout, MAX98361DEVSYS#WLP application, or MAX98361DEVSYS#WLP equivalent, this system provides immediate USB-audio playback capability via the included Audio Interface Board III (AUDINT3), eliminates need for external PCM generators, and supports hardware-level configuration of gain, channel mapping, and shutdown control without software drivers.

Technical Context

The MAX98361DEVSYS#WLP integrates two PCBs: the MAX98361 Development Board (DEV board) hosting the WLP-packaged MAX98361D IC, and the Audio Interface Board III (AUDINT3) providing USB-to-PCM conversion, 1.8V VDDIO regulation, and BCLK/LRCLK generation. The DEV board accepts either external 2.5V–5.5V VDD or 5V from AUDINT3 (for functional testing only).

Audio interface configuration is hardware-driven via shunt jumpers: J4 sets gain (–3dB/3dB/6dB/9dB/12dB), J6/J7/J8 select I2S/left-justified channel (left/right/mono mix), and GAIN_SLOT + DAI configuration enable 8-channel TDM mode with fixed 12dB gain. All digital audio signals (BCLK, LRCLK, DIN) are accessible at header J3.

Key Specifications

Availability

MAX98361DEVSYS#WLP is available at Aetrix Electronics and suitable for audio subsystem validation, embedded voice interface prototyping, and portable speaker reference design requiring stable component supply and out-of-box USB audio functionality.

Supply support for MAX98361DEVSYS#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

Analog Devices is a global semiconductor company specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement, power management, and connectivity applications.

The MAX98361 product line delivers ultra-low-power, filterless Class-D audio amplifiers optimized for space-constrained portable devices such as earbuds, smart speakers, wearables, and IoT voice interfaces - with emphasis on minimal external components and direct speaker drive capability.

FAQ

What does MAX98361DEVSYS#WLP evaluate?

MAX98361DEVSYS#WLP evaluates the MAX98361D mono Class-D audio amplifier in wafer-level package (WLP), specifically configured for left-justified digital audio input and 8-channel TDM mode. It includes the DEV board with the MAX98361D IC, the Audio Interface Board III (AUDINT3), and a micro-USB cable - enabling full hardware-based evaluation without external test equipment.

Does MAX98361DEVSYS#WLP support I2S mode?

No - MAX98361DEVSYS#WLP is configured for the MAX98361D variant, which supports left-justified and 8-channel TDM modes only. I2S mode is supported by MAX98361A and MAX98361C variants, evaluated using their respective evaluation systems (e.g., MAX98361AEVSYS#WLP). The hardware jumpers and AUDINT3 firmware are aligned to left-justified timing.

How is gain controlled on MAX98361DEVSYS#WLP?

Gain on MAX98361DEVSYS#WLP is controlled exclusively via hardware shunt placement on jumper header J4: positions 1–2 (3dB), 1–3 (6dB), 1–4 (–3dB), 1–5 (12dB), or unshunted (9dB). This maps directly to the MAX98361D's GAIN_SLOT pin and requires no register programming or software interaction.

Can MAX98361DEVSYS#WLP drive an 8Ω speaker without filtering?

Yes - MAX98361DEVSYS#WLP implements filterless Class-D operation. Its FOUTP and FOUTN binding posts deliver full output directly to 4Ω or 8Ω speakers without external LC filters. EMI mitigation (e.g., ferrite beads + 100pF caps) is optional and only recommended for speaker cables exceeding ~12 inches.

What power supplies are required to operate MAX98361DEVSYS#WLP?

Two supplies are required: (1) 2.5V–5.5V at VIN/GND binding posts for VDD (amplifier core), and (2) 1.8V VDDIO supplied automatically by the AUDINT3 board via J1 connector. The AUDINT3's 5V rail may power VDD only for basic functionality checks - it lacks current capacity for driving speaker loads.