Analog Devices Inc./Maxim Integrated MAX4415EUA+T

Overview

MAX4415EUA+T from Maxim Integrated is a single-channel, high-speed, rail-to-rail output operational amplifier optimized for closed-loop gains ≥ +5V/V. It delivers 150MHz -3dB bandwidth, 470V/µs slew rate, and ultra-low 1.6mA supply current per amplifier while operating from a single +2.7V to +5.5V supply. Its input common-mode range extends from 100mV below ground to within 1.5V of V_CC, making it suitable for video line drivers and baseband signal conditioning in portable communications systems.

For engineers reviewing the MAX4415EUA+T datasheet, MAX4415EUA+T pinout, MAX4415EUA+T application, or MAX4415EUA+T equivalent, key selection criteria include its gain-stable +5V/V minimum configuration, capacitive-load drive capability up to 120pF with isolation resistor, low 0.05% differential gain error, and µMAX-8 package compatibility with space-constrained PCB layouts.

Technical Context

The MAX4415EUA+T uses voltage-feedback architecture with internal compensation tailored for stable operation at closed-loop gains of +5V/V or higher - unlike unity-gain-stable variants (e.g., MAX4414). Its output stage employs demand-driven current biasing and internal feedback to maintain low open-loop output impedance (<0.5Ω at 1MHz), minimizing gain sensitivity to load variations.

It features ground-sensing inputs and rail-to-rail outputs, enabling full dynamic range utilization in single-supply systems: with V_CC = +5V and R_L = 1kΩ, output swing reaches within 105mV of both rails. Stability under capacitive loading requires external isolation resistors (e.g., 22Ω for ≤22pF), as the device is not optimized for direct reactive load driving.

Key Specifications

Pinout & Package

The MAX4415EUA+T is housed in an 8-pin µMAX package (3mm × 3mm, 0.8mm height), compatible with standard SO-8 footprints but offering 40% smaller area and improved thermal performance. Pin 1 is marked with a dot; the package is RoHS-compliant and moisture-sensitive level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4414EUA+T and ADA4891-1ARJZ-R7, the MAX4415EUA+T uniquely balances high closed-loop bandwidth (150MHz), exceptional slew rate (470V/µs), and ultra-low power (1.6mA) - enabling compact, battery-efficient video and communications systems without sacrificing signal fidelity.

Availability

MAX4415EUA+T is available at Aetrix Electronics and suitable for video line drivers, portable communications baseband circuits, and battery-powered instrumentation requiring stable component supply, consistent parametric performance across temperature, and long-term production continuity.

Supply support for MAX4415EUA+T 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 MAX4414–MAX4419 family was designed specifically for low-voltage, high-speed signal conditioning in portable and battery-operated systems - emphasizing rail-to-rail operation, ultra-low power, and video-grade distortion performance.

FAQ

What is the minimum closed-loop gain required for stable operation of the MAX4415EUA+T?

The MAX4415EUA+T is internally compensated for stable operation only at closed-loop gains of +5V/V or greater. Using it at gains below +5V/V risks peaking, overshoot, or oscillation due to insufficient phase margin. For unity-gain or variable-gain applications, select the MAX4414EUA+T instead. Always verify stability with actual load conditions and board parasitics during prototype validation.

Can the MAX4415EUA+T drive a 75Ω coaxial cable directly?

Yes - the MAX4415EUA+T can drive a 75Ω coaxial cable when properly terminated at both ends. Its output stage delivers ±75mA and maintains low distortion (0.05% DG/0.35° DP) into 75Ω, meeting SMPTE 259M requirements. However, avoid unterminated or mismatched cables, as reflections may induce instability; use series 22Ω isolation resistors if cable length exceeds 10cm or capacitance exceeds 15pF.

What is the maximum capacitive load the MAX4415EUA+T can drive without an isolation resistor?

The MAX4415EUA+T is not characterized for direct capacitive load driving without an isolation resistor. Data sheet testing confirms stable operation up to 120pF *only when* a recommended isolation resistor (e.g., 22Ω for ≤22pF, scaling per Figure 2 in the datasheet) is placed in series with the load. Driving >5pF capacitance without isolation risks ringing, overshoot, or oscillation due to degraded phase margin.

Does the MAX4415EUA+T support single-supply operation with input signals referenced to ground?

Yes - the MAX4415EUA+T features a ground-sensing input with common-mode range extending to VEE − 0.1V (i.e., −0.1V when VEE = 0V). This allows direct interface with ground-referenced sensors, DAC outputs, or microcontroller GPIOs in single-supply systems. Ensure the output load permits rail-to-rail swing; for V_CC = +5V, output can swing to within 105mV of ground with 1kΩ load.

How does the power-up settling behavior of the MAX4415EUA+T impact system timing?

The MAX4415EUA+T achieves 1% output settling in 1.2µs to 100µs (typical) after power-up, depending on supply ramp rate and load. This behavior is critical in power-gated systems (e.g., wake-on-event instrumentation), where rapid signal readiness avoids data loss. To minimize delay, ensure V_CC ramps monotonically >1V/ms and bypass V_CC/VEE with 0.1µF ceramic capacitors placed <1mm from pins. The MAX4415EUA+T does not include enable/disable control.