Analog Devices Inc./Maxim Integrated MAX4019EEE+T

Overview

The MAX4019EEE+T from Maxim Integrated is a precision, triple-channel, closed-loop +2/−1 gain buffer IC with rail-to-rail outputs, 200MHz −3dB bandwidth, 600V/µs slew rate, and integrated enable control. It operates from single +3.15V to +11V or dual ±1.575V to ±5.5V supplies, supports video line driving and ADC interface applications, and delivers ±120mA output drive into heavy loads.

For engineers reviewing the MAX4019EEE+T datasheet, MAX4019EEE+T pinout, MAX4019EEE+T application, or MAX4019EEE+T equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions in 16-pin QSOP, confirmed alternatives with functional differences, and supply-chain support for industrial video and instrumentation designs.

Technical Context

The MAX4019EEE+T implements three independent voltage-feedback buffers using internal 500Ω precision resistors to fix closed-loop gain at +2V/V (noninverting) or −1V/V (inverting), with input range extending 100mV beyond VEE and rail-to-rail output swing. Its architecture combines current-feedback techniques for high-speed performance while maintaining low distortion.

Each channel features an independent EN_ pin enabling individual shutdown (400µA per buffer quiescent current), disabled output resistance of 1kΩ (reduced to 500Ω under large differential input conditions), and input noise density of 10nV/√Hz and 1.3pA/√Hz - optimized for wideband analog signal conditioning in space-constrained systems.

Key Specifications

Pinout & Package

MAX4019EEE+T is packaged in a 16-pin QSOP (Quad Small Outline Package) with 0.154" body width and 0.025" lead pitch, rated for −40°C to +85°C operation and RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed buffer applications.

Compared with MAX4017ESA+, the MAX4019EEE+T adds third channel and per-buffer enable for flexible power management; compared with THS3201DGN, it trades raw speed for integrated precision gain, lower noise, rail-to-rail output, and 3× lower quiescent current - making it optimal for battery-powered video and instrumentation.

Availability

MAX4019EEE+T is available at Aetrix Electronics and suitable for video line driving, analog-to-digital converter interface, CCD imaging systems, and video routing and switching systems requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MAX4019EEE+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 MAX4019EEE+T belongs to Maxim's precision high-speed buffer product line, designed specifically for low-power, wideband analog signal conditioning in video, instrumentation, and imaging systems operating from single or dual supplies.

FAQ

What is the operating supply voltage range for the MAX4019EEE+T?

The MAX4019EEE+T operates from a single supply of +3.15V to +11V or dual supplies of ±1.575V to ±5.5V. This wide range supports both 3.3V and 5V systems, as well as legacy ±5V designs. The device maintains full 200MHz bandwidth and rail-to-rail output swing across the entire specified voltage range, and internal protection circuitry prevents damage from overvoltage transients on the EN_ and input pins.

How does the enable feature work on the MAX4019EEE+T?

The MAX4019EEE+T has three independent enable inputs (ENA, ENB, ENC), one per amplifier channel. When pulled high to VCC − 1.5V or greater, the corresponding buffer operates normally with 5.5mA quiescent current. When pulled low to VEE + 0.2V or less, that channel shuts down, drawing only 400µA. This per-channel control allows dynamic power gating in multi-function systems - for example, disabling unused video paths in a 3×3 router while keeping active channels fully operational.

What gain configurations does the MAX4019EEE+T support?

The MAX4019EEE+T supports fixed closed-loop gains of +2V/V (noninverting) and −1V/V (inverting) using internal 500Ω precision resistors. For +2 gain, ground the inverting input (e.g., INA−) and apply signal to the noninverting input (e.g., INA+). For −1 gain, ground the noninverting input and apply signal to the inverting input. No external resistors are required, ensuring ±1% gain accuracy over temperature and eliminating matching errors common in discrete resistor networks.

Can the MAX4019EEE+T drive 50Ω transmission lines directly?

Yes, the MAX4019EEE+T can directly drive 50Ω loads with full performance: it delivers ±120mA output current and maintains 200MHz bandwidth into 50Ω. For optimal signal integrity, terminate the far end of the line with 50Ω to ground and use microstrip layout techniques. When driving capacitive loads >25pF, add a series isolation resistor (e.g., 27Ω for 120pF) at the output to prevent peaking and ensure stability - values are documented in Figure 8 of the MAX4019EEE+T datasheet.

What is the input voltage noise specification for the MAX4019EEE+T?

The MAX4019EEE+T has an input voltage noise density of 10nV/√Hz at 1kHz, measured with VCC = +5V, VEE = 0V, and RL = 150Ω. This low noise level, combined with 1.3pA/√Hz input current noise, makes the MAX4019EEE+T suitable for high-resolution signal conditioning - for instance, driving the reference input of a 12-bit ADC without degrading effective number of bits (ENOB) at frequencies up to 5MHz.