Analog Devices Inc./Maxim Integrated MAX4031EEUD+T

Overview

MAX4031EEUD+T from Maxim Integrated is a triple, unity-gain stable, rail-to-rail output operational amplifier optimized for high-speed video line driving with ±15kV ESD protection on all inputs and outputs. It operates from a single 5V supply, delivers 115V/µs slew rate and 144MHz small-signal -3dB bandwidth, and features individual shutdown control per channel. It is used in SDTV, HDTV, and security video systems where robustness against electrostatic discharge and low differential gain/phase error (0.2%/0.2°) are critical.

For engineers reviewing the MAX4031EEUD+T datasheet, MAX4031EEUD+T pinout, MAX4031EEUD+T application, or MAX4031EEUD+T equivalent, key selection criteria include ESD rating compliance (IEC 1000-4-2 ±15kV air-gap), 14-pin TSSOP package compatibility, shutdown current of 0.1µA per amplifier, rail-to-rail output swing into 150Ω, and guaranteed operation over –40°C to +85°C.

Technical Context

The MAX4031EEUD+T employs BiCMOS process technology to achieve high-speed performance while maintaining low power consumption (12mA per amplifier quiescent current). Its input stage supports common-mode voltage down to ground, and its rail-to-rail output stage swings within 100mV of both rails under 150Ω load, enabling full dynamic range in single-supply video signal chains.

Each amplifier includes independent digital shutdown control (SHDNA/SHDNB/SHDNC), reducing current draw to 0.1µA per channel when disabled. The device is internally compensated for unity-gain stability and maintains 0.1dB gain flatness up to 20MHz at 100mVP-P, making it suitable for composite and component video buffering without external compensation.

Key Specifications

Pinout & Package

MAX4031EEUD+T is housed in a 14-pin TSSOP package (4.4mm body width, 0.65mm pitch), optimized for high-density video interface layouts and reflow-compatible assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LMH6738MA/NOPB and THS3201DGN, MAX4031EEUD+T uniquely combines video-optimized specifications (0.2%/0.2° error), integrated ±15kV ESD, per-channel shutdown, and 5V single-supply operation-making it the only drop-in solution for cost-sensitive, high-reliability analog video interfaces.

Availability

MAX4031EEUD+T is available at Aetrix Electronics and suitable for SDTV, HDTV, and security video systems requiring stable component supply, long-term production continuity, and guaranteed industrial temperature range support.

Supply support for MAX4031EEUD+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) designs precision analog, mixed-signal, and high-speed ICs for demanding industrial, communications, and consumer applications.

The MAX4030E/MAX4031E product line was developed specifically for robust, high-fidelity analog video signal conditioning in ESD-prone environments such as consumer displays and surveillance equipment.

FAQ

What is the maximum capacitive load the MAX4031EEUD+T can drive without oscillation?

The MAX4031EEUD+T is characterized for stable operation with up to 200pF capacitive load without external isolation components. This is verified in the datasheet's "Capacitive-Load Stability" specification and confirmed by typical operating curves showing flat frequency response up to 200pF. For loads exceeding 200pF, a series isolation resistor (typically 10Ω–15Ω) is recommended to maintain phase margin and prevent peaking.

Does the MAX4031EEUD+T require external compensation for unity-gain operation?

No, the MAX4031EEUD+T is internally compensated for unity-gain stability. The datasheet explicitly states "internally compensated for unity gain" and recommends a 24Ω feedback resistor in unity-gain configurations to optimize AC performance by damping parasitic LC resonances. No external compensation capacitors are needed for stable unity-gain operation.

Can the MAX4031EEUD+T drive a 75Ω video load directly?

Yes-the MAX4031EEUD+T is specified to directly drive 150Ω loads, and its output stage is fully capable of driving 75Ω with appropriate gain configuration. Typical operating circuits in the datasheet show 75Ω termination, and the output voltage swing specification (0.01V to 4.99V into 150Ω) scales linearly to ~0.01V to 4.95V into 75Ω, maintaining rail-to-rail functionality and low distortion.

What is the input common-mode voltage range of the MAX4031EEUD+T?

The MAX4031EEUD+T input common-mode voltage range extends from ground (0V) to VCC – 2.25V (i.e., 2.75V at 5V supply). This "ground-sensing" capability is guaranteed over the full –40°C to +85°C temperature range and enables direct interfacing with baseband video sources, DAC outputs, and other low-voltage analog signals without level-shifting circuitry.

How does the shutdown feature affect output impedance in the MAX4031EEUD+T?

When any SHDN pin (SHDNA/SHDNB/SHDNC) is driven low, the corresponding amplifier's output enters a high-impedance (Hi-Z) state with leakage current ≤10µA. This is confirmed in the "Disabled Output Leakage Current" parameter (IOUT_SH = 0.1µA to 10µA) and the Detailed Description section, which states "In shutdown, the amplifier output impedance is high impedance." This allows safe multiplexing or shared bus operation without loading adjacent channels.