Analog Devices Inc./Maxim Integrated MAX4336EVKIT

Overview

MAX4336EVKIT from Maxim Integrated is an evaluation kit designed to accelerate development and validation of the MAX4336 rail-to-rail input/output operational amplifier - a 5MHz GBWP, 50mA-output, single-channel op amp in SC70-6 package optimized for 32Ω headphone driver applications in portable, battery-powered systems operating from 2.7V to 5.5V single supply.

For engineers reviewing the MAX4336EVKIT datasheet, MAX4336EVKIT pinout, MAX4336EVKIT application, or MAX4336EVKIT equivalent, this kit enables rapid prototyping of low-noise, high-drive audio buffer circuits with shutdown/mute control, rail-to-rail swing, and thermal/short-circuit protection - critical for portable audio, hands-free car phones, and DAC/ADC interface designs.

Technical Context

The MAX4336EVKIT implements a fully populated, tested reference circuit for the MAX4336 op amp, including dual-channel configuration support (via jumper), selectable gain (unity or noninverting), AC-coupled 32Ω load interface, and dedicated SHDN control with <1μs enable/disable timing. It incorporates recommended bypassing (0.1μF ceramic + 1μF tantalum) and layout practices per Maxim's application guidance.

It supports both single-supply operation (2.7V–5.5V) and features on-board test points for VIN+, VIN−, VOUT, SHDN, and VCC/GND - enabling direct measurement of THD+N (<0.003% at 20kHz into 10kΩ), PSRR (90dB), output swing (within 100mV of rails), and shutdown current (<0.04μA per amplifier).

Key Specifications

Availability

MAX4336EVKIT is available at Aetrix Electronics and suitable for portable audio subsystem validation, battery-powered instrument front-end testing, and hands-free communication interface development requiring stable component supply and fast-turn evaluation support.

Supply support for MAX4336EVKIT 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 semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and consumer applications.

The MAX4336EVKIT belongs to Maxim's precision audio op amp evaluation platform family, engineered specifically to simplify qualification of rail-to-rail, high-output-current amplifiers in space-constrained, low-voltage portable systems.

FAQ

What is the primary function of the MAX4336EVKIT?

The MAX4336EVKIT is a fully assembled evaluation board that demonstrates and validates the performance of the MAX4336 rail-to-rail op amp in real-world audio driver applications. It provides immediate access to all key signals - including SHDN, VCC, IN+, IN−, and OUT - and implements Maxim's recommended circuit topology for 32Ω headphone driving with AC coupling, gain selection, and thermal-safe layout.

Does the MAX4336EVKIT support dual-channel operation?

No - the MAX4336EVKIT is configured exclusively for the single-channel MAX4336 op amp. While the MAX4337/MAX4338 are dual-channel variants, this kit maps only to the MAX4336's SC70-6 pinout and functionality. Dual-channel evaluation requires separate kits such as MAX4338EVKIT.

Can the MAX4336EVKIT be used to measure THD+N and PSRR?

Yes - the MAX4336EVKIT's clean layout, proper decoupling (0.1μF + 1μF), and accessible test points allow accurate bench measurement of key AC specs. With a 5V supply and 10kΩ load, it supports THD+N verification down to 0.003% at 20kHz and PSRR validation across 10Hz–10MHz per the MAX4336 datasheet test conditions.

What is the purpose of the 100μF coupling capacitor on the MAX4336EVKIT?

The 100μF electrolytic coupling capacitor (C2) on the MAX4336EVKIT sets the low-frequency cutoff at ~50Hz for a 32Ω load, per the design equation ƒ = 1/(2π·RL·C2). This blocks DC bias from reaching the headphone load while preserving full audio bandwidth - a critical implementation detail confirmed in Maxim's Typical Operating Circuit and Applications Information sections.

How does the MAX4336EVKIT verify shutdown mode behavior?

The MAX4336EVKIT includes a dedicated SHDN test point with series resistor and pull-up, allowing direct injection of logic-low signal to activate shutdown. When triggered, the board confirms MAX4336's specified <0.04μA per-amplifier supply current and high-impedance output state - validated using standard bench DMM and oscilloscope measurements per the datasheet's ICC(SHDN) and IOUT(SHDN) test conditions.