Analog Devices Inc./Maxim Integrated MAX4174ABEUK-T

Overview

MAX4174ABEUK-T from Maxim Integrated is a single-channel, noninverting fixed-gain amplifier with internal precision resistors, delivering +5V/V gain, 0.1% gain accuracy, rail-to-rail output swing, ±17V input fault protection, and 300µA supply current. It operates from +2.5V to +5.5V and targets low-power signal conditioning in portable instrumentation and smart-card readers.

For engineers reviewing the MAX4174ABEUK-T datasheet, MAX4174ABEUK-T pinout, MAX4174ABEUK-T application, or MAX4174ABEUK-T equivalent, key selection criteria include confirmed noninverting +5V/V gain, SOT23-5 package compatibility, input voltage range (VEE to VCC), rail-to-rail output drive into 1kΩ, and fault-tolerant operation up to ±17V at inputs.

Technical Context

The MAX4174ABEUK-T integrates a rail-to-rail op amp core with laser-trimmed on-chip feedback resistors (RF/RG) to achieve factory-set +5V/V noninverting gain and 0.1% DC accuracy. Its internal compensation is optimized specifically for this gain, yielding 330kHz –3dB bandwidth and 23MHz gain-bandwidth product.

Input structure includes diode clamping and back-to-back SCR protection enabling ±17V fault tolerance without phase reversal or excessive current draw. The inverting input connects directly to RG, while the noninverting input accepts signals from VEE to VCC - no internal VCC/2 bias (distinguishing it from MAX4175 variants).

Key Specifications

Pinout & Package

SOT23-5 surface-mount package with 1.6mm × 2.9mm footprint, 0.95mm height, and gull-wing leads - compatible with standard reflow profiles and automated assembly.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar fixed-gain amplifier applications.

Compared with MAX4174AEUK-T and MAX4274BEUK-T, the MAX4174ABEUK-T offers optimal trade-off between gain magnitude and bandwidth for mid-range sensor scaling - its +5V/V setting delivers 330kHz bandwidth while maintaining 0.1% accuracy, unlike lower-gain variants that sacrifice signal-to-noise ratio or higher-gain versions that reduce usable frequency response.

Availability

MAX4174ABEUK-T is available at Aetrix Electronics and suitable for portable instrumentation, smart-card readers, and bar-code scanners requiring stable component supply, guaranteed 0.1% gain accuracy, and ±17V input fault resilience.

Supply support for MAX4174ABEUK-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 and mixed-signal ICs for industrial, medical, and consumer applications - emphasizing integration, reliability, and performance-per-watt.

The MAX4174 series belongs to Maxim's GainAmp™ family of fixed-gain amplifiers, engineered to replace op-amp-plus-resistor configurations with monolithic solutions offering factory-trimmed accuracy, fault protection, and rail-to-rail operation in ultra-small packages.

FAQ

What is the exact gain configuration and value of the MAX4174ABEUK-T?

The MAX4174ABEUK-T is a noninverting fixed-gain amplifier with precisely trimmed +5V/V gain. This value is laser-set during manufacturing and guaranteed to ±0.1% across –40°C to +85°C. Unlike open-loop op amps, the MAX4174ABEUK-T requires no external resistors to establish this gain - the RF/RG network is fully integrated and optimized for stability at this specific closed-loop setting.

Does the MAX4174ABEUK-T include internal VCC/2 biasing at the noninverting input?

No, the MAX4174ABEUK-T does not include internal VCC/2 biasing. That feature is exclusive to the MAX4175 and MAX4275 variants. The MAX4174ABEUK-T has a fully DC-coupled noninverting input (IN+) with common-mode range from VEE to VCC, making it suitable for ground-referenced or dual-supply applications where external bias control is required.

What is the maximum capacitive load the MAX4174ABEUK-T can drive without oscillation?

The MAX4174ABEUK-T is stable driving capacitive loads up to 470pF with no external isolation resistor. This specification is verified per Maxim's Electrical Characteristics table and Typical Operating Characteristics (Figure 12). Loads exceeding 470pF require a series isolation resistor (e.g., 100Ω) at the output to maintain phase margin and prevent peaking or ringing.

Can the MAX4174ABEUK-T be used in single-supply systems with AC-coupled inputs?

Yes, the MAX4174ABEUK-T supports AC-coupled inputs in single-supply systems, but external biasing of the IN+ pin is required - for example, using a resistor divider from VCC to GND. Since it lacks internal VCC/2 bias (unlike MAX4175), designers must provide a stable DC reference to set the output quiescent point. A 0.1µF coupling capacitor and appropriate bias network ensure proper large-signal swing without clipping.

What are the absolute maximum ratings for input voltage on the MAX4174ABEUK-T?

The MAX4174ABEUK-T allows input voltages up to ±17V at either IN+ or IN– relative to VEE, per Absolute Maximum Ratings. This fault protection remains active even when the device is unpowered. However, for normal linear operation, the input common-mode range is limited to VEE to VCC - applying voltages beyond this range during active operation may cause distortion or temporary saturation, though no damage occurs due to the integrated SCR and diode clamps.