Analog Devices Inc./Maxim Integrated MAX4311EEE+T

Overview

MAX4311EEE+T from Maxim Integrated is a 4-channel, unity-gain-stable video multiplexer-amplifier with 345MHz -3dB bandwidth, 430V/µs slew rate, and 40ns channel switching time. It features rail-to-rail outputs, input common-mode range extending to the negative rail, and 0.06%/0.08° differential gain/phase error-optimized for broadcast video signal routing in SD/HD systems.

For engineers reviewing the MAX4311EEE+T datasheet, MAX4311EEE+T pinout, MAX4311EEE+T application, or MAX4311EEE+T equivalent, key selection criteria include its 4-channel analog mux architecture, adjustable-gain amplifier stage, low 10mV_p-p switching transient, single-supply operation down to +4V, and QSOP-16 package compatibility with high-density video interface PCB layouts.

Technical Context

The MAX4311EEE+T integrates a 4-input analog multiplexer with a voltage-feedback amplifier configured for ≥+1V/V closed-loop gain. Its internal amplifier maintains an open-loop output impedance of only 8Ω across the full output swing, minimizing load-dependent gain error and bandwidth variation.

Channel selection is controlled via three logic inputs (A0–A2), enabling deterministic 40ns switching with ultra-low 10mV_p-p transient artifacts. The device operates from +4V to +10.5V single supply or ±2V to ±5.25V dual supplies, supporting rail-to-rail output swing into 150Ω loads while accepting input signals down to the negative rail.

Key Specifications

Pinout & Package

MAX4311EEE+T is housed in a 16-pin QSOP package (5.3mm × 10.2mm, 0.65mm pitch), optimized for automated assembly and thermal performance in video interface applications.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar video multiplexer-amplifier applications.

Compared with MAX4314EEE+T and THS4302DR, the MAX4311EEE+T uniquely balances 4-channel integration, 345MHz bandwidth, and unity-gain stability-making it optimal for space-constrained, multi-source HD video routing where gain flexibility and low switching artifacts are critical.

Availability

MAX4311EEE+T is available at Aetrix Electronics and suitable for video signal multiplexing, broadcast video distribution, Flash ADC input buffering, and video crosspoint switching requiring stable component supply and long-term industrial availability.

Supply support for MAX4311EEE+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 power management ICs for demanding industrial, communications, and consumer applications.

The MAX4310–MAX4315 family was engineered specifically for high-fidelity, low-glitch video signal routing in broadcast, medical imaging, and multimedia equipment-emphasizing differential gain/phase accuracy, fast switching, and single-supply operability.

FAQ

What is the maximum operating supply voltage for the MAX4311EEE+T?

The MAX4311EEE+T supports a single-supply operating range of +4V to +10.5V, or dual supplies of ±2V to ±5.25V. Absolute maximum supply voltage is 12V (VCC to VEE). Exceeding +10.5V in single-supply mode risks violating internal bias conditions and degrading differential gain/phase performance-verified per the Absolute Maximum Ratings table in the official datasheet.

Does the MAX4311EEE+T support DC-coupled video inputs?

Yes, the MAX4311EEE+T supports DC-coupled video inputs because its input common-mode voltage range extends to the negative supply rail (VEE), which is typically ground in single-supply configurations. This eliminates the need for AC-coupling capacitors and level shifters when interfacing with baseband video sources like CCD sensors or DAC outputs-confirmed by the DC Electrical Characteristics table showing VCM minimum = 0.035V above VEE.

How does the MAX4311EEE+T achieve low switching transients?

The MAX4311EEE+T achieves 10mV_p-p switching transients through matched switch timing, charge cancellation circuitry, and optimized amplifier settling behavior. Its 40ns channel switching time is tightly controlled across temperature and supply voltage, and the internal amplifier's 345MHz bandwidth ensures rapid recovery from transient events-measured under RL = 150Ω, VOUT = 2V_p-p, and TA = +25°C per AC Electrical Characteristics.

Can the MAX4311EEE+T drive 75Ω coaxial cables directly?

Yes, the MAX4311EEE+T can drive 75Ω coaxial cables directly when used with proper back-termination: configure the output load as 150Ω to VCC/2 (i.e., two 75Ω resistors-one in series at driver output, one at receiver end). Its rail-to-rail output delivers ≥2.27V swing into 150Ω, meeting SMPTE 259M amplitude requirements, and its 8Ω open-loop output impedance minimizes mismatch-induced reflections-validated in Typical Operating Characteristics Figure 5 and Applications Information section.

What is the function of the FB pin on the MAX4311EEE+T?

The FB (feedback) pin on the MAX4311EEE+T is the inverting input of the adjustable-gain amplifier stage, used with external resistors to set closed-loop gain ≥+1V/V. Unlike the MAX4313–MAX4315 variants, the MAX4311EEE+T does not have internal gain-setting resistors-so FB must be connected to a resistor network (e.g., RF and RG) per Figure 1 in the datasheet. Leaving FB unconnected or improperly terminated causes instability or gain inaccuracy.