Analog Devices Inc./Maxim Integrated MAX9830AEVKIT+

Overview

MAX9830AEVKIT+ from Maxim Integrated is an evaluation kit for the MAX9830 mono 2W Class D audio amplifier IC, designed to demonstrate filterless operation, ultra-low EMI performance, and click-and-pop suppression in portable audio systems. It supports 2.6V–5.5V supply, delivers up to 2.25W into 4Ω, achieves 98dB SNR and <0.04% THD+N at 1kHz, and operates across –40°C to +85°C.

For engineers reviewing the MAX9830AEVKIT+ datasheet, MAX9830AEVKIT+ pinout, MAX9830AEVKIT+ application, or MAX9830AEVKIT+ equivalent, this kit enables rapid validation of speaker drive capability, spread-spectrum modulation efficacy, shutdown current (0.5µA), thermal protection behavior, and unfiltered EMI compliance with up to 24in speaker cables.

Technical Context

The MAX9830AEVKIT+ implements a fully assembled, tested reference design centered on the MAX9830 IC, featuring its proprietary spread-spectrum modulation (±10kHz around 600kHz center) and active edge-rate control to suppress radiated emissions without output LC filters. The board includes all required bypassing (0.1µF on PVDD, dual 0.47µF on inputs), exposed-pad thermal management, and direct connection to single-ended or differential audio sources.

It validates the IC's BTL (bridge-tied load) output architecture driving speakers directly-no external filter needed-and demonstrates real-world performance metrics including 85% efficiency at 1.5W into 8Ω, 1.6mA quiescent current at 5V, and RF immunity up to 3GHz per EN55022B-compliant testing with 24in cables.

Key Specifications

Availability

MAX9830AEVKIT+ is available at Aetrix Electronics and suitable for notebook computers, VoIP phones, MP3 players, and portable audio players requiring stable component supply, fast prototyping turnaround, and production-ready reference validation.

Supply support for MAX9830AEVKIT+ 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) is a U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX9830 product line targets ultra-low-power portable audio systems where battery life, EMI compliance, and minimal BOM count are critical - delivering Class AB fidelity with Class D efficiency in space-constrained designs.

FAQ

What is the primary function of the MAX9830AEVKIT+?

The MAX9830AEVKIT+ is an evaluation kit that provides a complete, assembled hardware platform for validating the MAX9830 mono 2W Class D audio amplifier IC. It enables engineers to test key features-including filterless speaker drive, spread-spectrum modulation, EMI performance with long cables, shutdown current, and click-and-pop suppression-without designing a custom PCB. The MAX9830AEVKIT+ includes all necessary passive components, proper layout, and thermal grounding per Maxim's recommended design.

Does the MAX9830AEVKIT+ support both single-ended and differential audio inputs?

Yes, the MAX9830AEVKIT+ supports both configurations via the MAX9830 IC's IN+ and IN– pins. The board is laid out to accept either single-ended input (IN– tied to PGND) or differential input (balanced signal applied across IN+ and IN–). Input coupling capacitors (0.47µF) are installed per Maxim's recommendation for optimal 17Hz f_–3dB and click-and-pop suppression. This flexibility allows direct interface with codecs, DACs, or microcontrollers in diverse portable audio architectures.

Can the MAX9830AEVKIT+ drive 8Ω speakers without an output filter?

Yes, the MAX9830AEVKIT+ is configured to drive 8Ω speakers filterlessly, as confirmed by Maxim's published test data showing EN55022B compliance with up to 24in speaker cables and 1.5W output into 8Ω at 10% THD+N. The board implements the MAX9830's proprietary spread-spectrum modulation and edge-rate control, eliminating the need for external LC filters while maintaining 98dB SNR and <0.04% THD+N. No additional filtering is required unless cable length exceeds 24in at lower supply voltages.

What thermal design elements are implemented on the MAX9830AEVKIT+?

The MAX9830AEVKIT+ incorporates Maxim's recommended thermal design: the MAX9830 IC's exposed pad (EP) is soldered directly to a large internal ground plane using multiple thermal vias, and the PCB uses 2oz copper on inner layers to enhance heat dissipation. This configuration supports the IC's rated 953.5mW continuous power dissipation at +70°C ambient and enables reliable operation at full 2W output into 4Ω. The board layout also uses wide, low-resistance traces for PVDD, PGND, and speaker outputs to minimize I²R losses.

How does the MAX9830AEVKIT+ validate EMI performance in real-world conditions?

The MAX9830AEVKIT+ validates EMI performance per EN55022B using standardized test setups documented in Maxim's datasheet - specifically, measurements taken with up to 24in (61cm) of untwisted speaker cable, demonstrating compliance without external filtering. The board's layout follows best practices: ground fills on top/bottom layers, minimized loop areas, and proper decoupling (0.1µF PVDD bypass + bulk capacitance option). Test results show >20dB margin below the limit at critical frequencies, confirming the effectiveness of the MAX9830's active emissions limiting and spread-spectrum modulation.