Analog Devices Inc./Maxim Integrated MAX4100EUA

Overview

The MAX4100EUA from Maxim Integrated is a unity-gain stable, low-power, high-speed voltage-feedback operational amplifier optimized for composite video, RGB, and RF cable driving. It delivers 500MHz unity-gain bandwidth, 250V/µs slew rate, ±3.5V output swing, 80mA output drive, and 0.06%/0.04° differential gain/phase-enabling precision video signal distribution in back-terminated 75Ω systems.

For engineers reviewing the MAX4100EUA datasheet, MAX4100EUA pinout, MAX4100EUA application, or MAX4100EUA equivalent, key selection criteria include unity-gain stability, 5mA supply current, 65MHz 0.1dB gain flatness, differential video fidelity, and µMAX-8 package compatibility with space-constrained portable instrumentation and broadcast interfaces.

Technical Context

The MAX4100EUA employs a voltage-feedback architecture with internal compensation for unconditional unity-gain stability. Its open-loop response exhibits >500MHz gain-bandwidth product and phase margin sufficient for stable operation with capacitive loads up to 5pF when used with an isolation resistor.

It operates from dual ±5V supplies (±6V absolute max), supports rail-to-rail input common-mode range (±2.5V), and maintains DC precision with 1mV typical input offset voltage, 0.8pA/√Hz input current noise, and 6nV/√Hz input voltage noise at 1kHz-critical for low-distortion analog front-end buffering.

Key Specifications

Pinout & Package

MAX4100EUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), pin-compatible with SO-8 but with 50% smaller footprint-ideal for high-density portable video modules.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed, low-power op amp applications.

Compared with LMH6702MF/NOPB and ADA4817-1ARMZ, the MAX4100EUA uniquely combines unity-gain stability, 5mA power draw, and broadcast-grade video linearity-making it the only drop-in solution for space-constrained, battery-operated video distribution without redesigning compensation networks or increasing thermal load.

Availability

MAX4100EUA is available at Aetrix Electronics and suitable for video cable driver, ultrasound front-end, and portable instrumentation applications requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production lots.

Supply support for MAX4100EUA 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, medical, and communications applications.

The MAX4100EUA belongs to Maxim's high-speed video op amp product line, engineered specifically for low-power, high-fidelity analog signal distribution in portable and broadcast video systems.

FAQ

What is the operating temperature range for the MAX4100EUA?

The MAX4100EUA is specified for operation from –40°C to +85°C. This industrial temperature range ensures reliable performance in portable medical devices, field-deployable test equipment, and broadcast gear exposed to ambient thermal cycling. All key AC and DC parameters-including bandwidth, slew rate, and differential gain-are guaranteed across this full range per the datasheet's Electrical Characteristics table.

Does the MAX4100EUA require external compensation for unity-gain operation?

No, the MAX4100EUA is internally compensated for unity-gain stability. Unlike the MAX4101 or many general-purpose high-speed op amps, it does not require external compensation components when configured as a buffer (AVCL = +1). This simplifies design, reduces component count, and eliminates tuning iterations-confirmed by the "MAX4100 is compensated for unity-gain stability" statement in the General Description and verified in Figure 1c and TOC-22 frequency response plots.

Can the MAX4100EUA drive 75Ω coaxial cables directly?

Yes, the MAX4100EUA is explicitly characterized to drive 75Ω back-terminated cables, delivering ±3.1V minimum output swing into that load. The Typical Application Circuit shows direct connection to 75Ω terminations, and the Detailed Description confirms "both devices can drive 75Ω back-terminated cables to ±3.1V minimum." Its 80mA output current and low output resistance (<1Ω) ensure minimal signal loss and reflection control.

What is the recommended power-supply bypassing scheme for the MAX4100EUA?

Per the Applications Information section, use a 1000pF ceramic capacitor between each supply pin (VCC and VEE) and the ground plane, placed as close to the package as possible. In parallel, add a 0.01µF to 0.1µF ceramic capacitor near each 1000pF cap. Finally, place a 10µF to 15µF low-ESR tantalum capacitor at the board's power entry point. The MAX4100EUA's RF bandwidth makes this multi-tiered bypassing essential to maintain PSR >55dB and prevent oscillation.

Is the MAX4100EUA pin-compatible with the MAX4100ESA?

Yes, the MAX4100EUA (µMAX-8) and MAX4100ESA (SO-8) share identical pin functions and numbering per the Pin Configuration diagram and Pin Description table. Both have N.C. on pins 1/5/8, IN– on pin 2, IN+ on pin 3, VEE on pin 4, OUT on pin 6, and VCC on pin 7. However, the µMAX package has different mechanical dimensions and thermal characteristics-PCB layout must be revised despite functional pin equivalence.