Analog Devices Inc./Maxim Integrated MAX4119ESD

Overview

MAX4119ESD from Maxim Integrated is a quad-channel, low-power current-feedback operational amplifier optimized for closed-loop gains ≥2V/V, delivering 270MHz -3dB bandwidth, 1200V/µs slew rate, and ±3.5V output swing into 100Ω - enabling high-fidelity RGB video line driving and pulse amplification in broadcast and medical imaging systems.

For engineers reviewing the MAX4119ESD datasheet, MAX4119ESD pinout, MAX4119ESD application, or MAX4119ESD equivalent, key selection considerations include its 14-pin SO package, quad-channel isolation, 5mA per amplifier supply current, and differential gain/phase error of 0.02%/0.03° at 150Ω load - critical for HD video signal integrity and fast settling in ADC buffer stages.

Technical Context

The MAX4119ESD implements a current-feedback architecture with 250kΩ open-loop transimpedance (Z_OL), enabling gain-bandwidth independence at low closed-loop gains. Its input stage features matched high-impedance noninverting inputs and low-impedance inverting inputs (~30Ω), supporting stable operation with feedback resistors as low as 47Ω.

Designed for ±4.5V to ±5.5V dual supplies, it maintains 0.1dB gain flatness up to 115MHz only when configured for AV_CL ≥8V/V (per MAX4113/MAX4118/MAX4120 variants); the MAX4119ESD itself is specified for AV_CL ≥2V/V and achieves 270MHz small-signal bandwidth under that condition.

Key Specifications

Pinout & Package

The MAX4119ESD is housed in a 14-pin SO (Small Outline) package (PKG CODE S14-1), with exposed pad not electrically connected. Pin 1 is marked by a beveled corner; pin numbering follows standard SO convention (counterclockwise from pin 1).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar current-feedback amplifier applications.

Compared with THS3201DR and LMH6723MA, the MAX4119ESD provides native quad-channel integration at 5mA/channel and 270MHz bandwidth - optimizing PCB space, power efficiency, and inter-channel matching for broadcast video and multi-lane data acquisition where extreme bandwidth is unnecessary.

Availability

MAX4119ESD is available at Aetrix Electronics and suitable for broadcast video infrastructure, RGB display interfaces, ultrasound beamforming, and high-speed ADC buffering requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MAX4119ESD 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 high-speed ICs for demanding industrial, medical, and communications applications.

The MAX4112/MAX4113/MAX4117–MAX4120 family delivers low-power, high-speed current-feedback amplifiers optimized for video line driving, pulse amplification, and ADC buffering - balancing bandwidth, distortion, and quiescent power in compact packages.

FAQ

What is the recommended power-supply bypassing scheme for MAX4119ESD?

For optimal AC performance, place a 1000pF ceramic capacitor between each supply pin (VCC and VEE) and the ground plane, located as close to the package as possible. Add a 0.01µF to 0.1µF ceramic capacitor in parallel with each 1000pF unit. Finally, use a 10µF to 15µF low-ESR tantalum capacitor at the PCB power entry point, with short traces directly connecting to VCC and VEE pins. This three-tier approach suppresses noise across 10kHz–1GHz.

Can MAX4119ESD drive a 75Ω coaxial cable directly?

Yes, the MAX4119ESD can drive a 75Ω coaxial cable directly when configured as a unity-gain follower with proper termination: connect the output through a 25Ω series resistor to the cable, and terminate the far end with 75Ω to ground. This configuration leverages the device's ±3.5V output swing into 100Ω and 80mA drive capability to deliver 2.0V_P-P into 75Ω while maintaining 0.02% differential gain accuracy per the datasheet test conditions.

What is the maximum closed-loop gain supported by MAX4119ESD without bandwidth degradation?

The MAX4119ESD is optimized for closed-loop gains of 2V/V or greater. While it remains stable at higher gains, its small-signal -3dB bandwidth decreases inversely with gain: e.g., at AV_CL = +5, bandwidth drops to ~145MHz; at AV_CL = +10, it falls to ~100MHz. For applications requiring flat response beyond 115MHz, keep AV_CL ≤ +2 or consider the MAX4120 variant optimized for AV_CL ≥8V/V.

Does MAX4119ESD support single-supply operation?

No, the MAX4119ESD is specified only for dual-supply operation from ±4.5V to ±5.5V. Its input common-mode range extends to ±2.5V and output swing reaches ±3.5V into 100Ω - both requiring negative and positive rails. Attempting single-supply use (e.g., 0V and +10V) violates absolute maximum ratings and causes clipping, instability, or damage due to input voltage exceeding VEE −0.3V or VCC +0.3V limits.

How does MAX4119ESD handle capacitive loads?

The MAX4119ESD is not designed to drive highly capacitive loads directly. Capacitive loading degrades phase margin and causes ringing or oscillation. To stabilize operation, insert a small isolation resistor (5Ω to 22Ω) between the output and the capacitive load. For example, with CL = 10pF, RS = 10Ω restores flat frequency response up to 200MHz. Layout best practices - including short traces and ground-plane proximity - further mitigate capacitive coupling effects.