Analog Devices Inc./Maxim Integrated MAX4434EUK/V+T

Overview

MAX4434EUK/V+T from Maxim Integrated is a single, unity-gain stable, voltage-feedback operational amplifier optimized for high-speed 14- and 16-bit ADC preamplification. It delivers 150MHz small-signal -3dB bandwidth, 35ns 16-bit (0.0015%) settling time, 2.2nV/√Hz input voltage noise density, and 65mA output drive capability in a 5-pin SOT23 package.

For engineers reviewing the MAX4434EUK/V+T datasheet, MAX4434EUK/V+T pinout, MAX4434EUK/V+T application, or MAX4434EUK/V+T equivalent, this op amp is selected for precision high-frequency signal conditioning where low distortion, fast settling, and rail-to-rail output swing are critical-especially in data acquisition front-ends driving modern SAR and pipeline ADCs.

Technical Context

The MAX4434EUK/V+T uses a voltage-feedback architecture with internal unity-gain compensation, enabling stable operation at AVCL = +1 V/V. Its 133V/µs slew rate and 28MHz large-signal -3dB bandwidth support clean amplification of fast transient signals up to 4V_p-p.

Designed for single-supply operation from +4.5V to +5.5V, it features rail-sensing inputs (V_CM = V_EE to V_CC − 1V), 115dB open-loop gain, and 97dB spurious-free dynamic range at 1MHz - all while consuming only 15mA per amplifier.

Key Specifications

Pinout & Package

MAX4434EUK/V+T is housed in a RoHS-compliant, lead(Pb)-free 5-pin SOT23 package (package code U5-1), optimized for high-density PCB layouts and automated assembly.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8001ARZ and THS4561IRGET, MAX4434EUK/V+T uniquely combines unity-gain stability, 150MHz bandwidth, 35ns 16-bit settling, and single-supply operation in a 5-pin SOT23 - making it the most direct solution for compact, high-fidelity ADC front-ends without design compromises.

Availability

MAX4434EUK/V+T is available at Aetrix Electronics and suitable for high-speed data acquisition, precision instrumentation, and communications infrastructure requiring stable component supply, long-term manufacturability, and RoHS-compliant packaging.

Supply support for MAX4434EUK/V+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 high-performance analog and mixed-signal ICs for demanding applications in industrial, communications, and consumer markets.

The MAX4434EUK/V+T belongs to Maxim's high-speed op amp product line, engineered specifically for ultra-low distortion, fast settling, and robust single-supply operation in precision data converter interfaces.

FAQ

What is the maximum capacitive load the MAX4434EUK/V+T can drive without oscillation?

The MAX4434EUK/V+T can drive up to 30pF without sustained oscillations, as specified in the Absolute Maximum Ratings table. For loads exceeding 15pF, adding a 10–50Ω isolation resistor in series with the output improves phase margin and suppresses ringing - a technique validated in Figure 3 of the datasheet. This applies directly to MAX4434EUK/V+T and is confirmed under standard test conditions (VCC = +5V, TA = +25°C).

Does the MAX4434EUK/V+T support true single-supply operation with rail-to-rail input?

Yes, the MAX4434EUK/V+T supports single-supply operation from +4.5V to +5.5V and accepts input common-mode voltages from VEE (ground) to VCC − 1V, enabling compatibility with ground-referenced sensors and DAC outputs. While not rail-to-rail input (it does not swing to VCC), its VCM range covers >90% of the supply, and its output swings within 15mV of VEE and 65mV of VCC - sufficient for most single-supply ADC driver use cases. This behavior is guaranteed across −40°C to +85°C for MAX4434EUK/V+T.

What is the typical power supply rejection ratio (PSRR) of the MAX4434EUK/V+T at 100kHz?

The typical PSRR of the MAX4434EUK/V+T is −101dB at 100kHz, as measured under AC conditions (VCC = +5V, RL = 500Ω, TA = +25°C). This high PSRR ensures minimal coupling of switching regulator noise or digital supply ripple into the analog signal path - a critical attribute for MAX4434EUK/V+T in mixed-signal systems where clean analog performance must be maintained despite noisy power domains.

Is the MAX4434EUK/V+T pin-compatible with other devices in the MAX4434–MAX4437 family?

No - the MAX4434EUK/V+T uses a 5-pin SOT23 package with pinout OUT/VEE/IN+/IN−/VCC, whereas dual variants (e.g., MAX4436EUA) use an 8-pin µMAX package with different pin assignment and dual-amplifier topology. Pin compatibility exists only within same-form-factor variants: MAX4434EUK/V+T is pin-compatible with MAX4434EUK-T and MAX4434ESA (SO-8 requires adapter layout), but not with any MAX4435/MAX4436/MAX4437 variant. This distinction is explicitly defined in the Pin Configurations section of the MAX4434–MAX4437 datasheet.

What is the guaranteed minimum open-loop gain for the MAX4434EUK/V+T over temperature?

The guaranteed minimum open-loop gain for MAX4434EUK/V+T is 100dB, tested under conditions of (VEE + 0.25)V ≤ VOUT ≤ (VCC − 0.25)V and RL = 10kΩ, across the full operating temperature range of −40°C to +85°C. This specification ensures predictable loop gain and closed-loop accuracy in precision gain configurations - a key parameter verified for every MAX4434EUK/V+T unit during production testing.