Analog Devices Inc./Maxim Integrated MAX4352EUK

Overview

MAX4352EUK from Maxim Integrated is a single-channel, high-speed, rail-to-rail output operational amplifier optimized for minimum closed-loop gain of +5V/V. It delivers 80MHz -3dB bandwidth, 240V/µs slew rate, and 8ns rise/fall time while consuming only 620µA supply current per amplifier. It operates from +2.7V to +5.25V single supply and is used in battery-powered RF front-ends and keyless entry receiver baseband stages.

For engineers reviewing the MAX4352EUK datasheet, MAX4352EUK pinout, MAX4352EUK application, or MAX4352EUK equivalent, this page provides verified electrical specifications, SOT23-5 package details, real-world use cases in low-voltage portable systems, and validated alternative op-amps with documented gain-stability and bandwidth trade-offs.

Technical Context

The MAX4352EUK employs voltage-feedback architecture with internal compensation for stable operation at AVCL ≥ +5V/V. Its bipolar process enables fast large-signal response (38MHz large-signal -3dB bandwidth) and low distortion (–74dBc SFDR at 1MHz, VCC = 5V), making it suitable for driving ADC inputs and active filter stages where phase linearity and settling accuracy are critical.

It features ground-sensing input common-mode range (VEE – 0.1V to VCC – 1.5V), rail-to-rail output swing (within 180mV of rails into 1kΩ), and low output impedance (0.8Ω at 1MHz), enabling direct interface with capacitive loads up to 22pF without external isolation resistors.

Key Specifications

Pinout & Package

The MAX4352EUK is housed in a 5-pin SOT23-5 package (JEDEC MO-178 compliant), measuring 2.9mm × 1.6mm × 1.1mm, with gull-wing leads and moisture sensitivity level 1 (MSL1).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4352EUK, MAX4452EUK offers higher bandwidth and unity-gain stability at identical quiescent current, while ADA4891-1ARJZ-R7 trades 14× higher supply current for marginal bandwidth gain-making MAX4352EUK optimal for gain-fixed, battery-sensitive designs.

Availability

MAX4352EUK is available at Aetrix Electronics and suitable for cellular telephones, keyless entry systems, and portable medical instrumentation requiring stable component supply with guaranteed long-term manufacturability.

Supply support for MAX4352EUK 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 power, sensing, connectivity, and signal processing applications.

The MAX4352EUK belongs to Maxim's high-speed, low-power op-amp family targeting portable RF and baseband signal chains where bandwidth, speed/power ratio, and rail-to-rail operation are essential.

FAQ

What is the minimum closed-loop gain required for stable operation of the MAX4352EUK?

The MAX4352EUK is internally compensated for stable operation at a minimum closed-loop gain of +5V/V. Operating at gains below +5V/V may cause peaking or oscillation due to reduced phase margin. For unity-gain applications, the MAX4452EUK variant is recommended instead. This gain requirement is explicitly specified in the datasheet's AC Electrical Characteristics table and confirmed in the Applications Information section.

Does the MAX4352EUK support rail-to-rail input operation?

No, the MAX4352EUK does not support rail-to-rail input. Its input common-mode voltage range is specified from (VEE – 0.1V) to (VCC – 1.5V), meaning it cannot accept signals within 1.5V of the positive rail. However, it does provide true rail-to-rail output swing, delivering signals within 180mV of both supply rails into a 1kΩ load. This ground-sensing input architecture is intentional for single-supply operation in bias-sensitive applications.

Can the MAX4352EUK drive a 1000pF capacitive load directly?

No, the MAX4352EUK is characterized to drive up to 22pF capacitive load without external isolation. Driving 1000pF directly will degrade phase margin, causing overshoot, ringing, or oscillation. The datasheet recommends using an isolation resistor (RISO) between the amplifier output and the capacitive load, with values determined by the "Optimal Isolation Resistor vs. Capacitive Load" curve (Figure 2). For 1000pF, RISO ≈ 47Ω is typical based on the published graph.

What is the typical power-supply rejection ratio (PSRR) of the MAX4352EUK at 1MHz?

The typical PSRR of the MAX4352EUK is 60dB at 1MHz, as measured under conditions VCC = +2.7V to +5.25V, VCM = 0V, and VOUT = 2V. This value is listed in the DC Electrical Characteristics table under "Power-Supply Rejection Ratio (PSRR)" and reflects its ability to reject high-frequency supply noise-critical in noisy mixed-signal environments like cellular baseband sections. PSRR degrades with frequency, dropping to ~30dB at 100MHz.

Is the MAX4352EUK pin-compatible with the MAX4452EUK?

Yes, the MAX4352EUK and MAX4452EUK share identical 5-pin SOT23-5 pinouts (OUT, VEE, IN+, IN−, VCC), enabling drop-in replacement in the same footprint. However, their internal compensation differs: MAX4352EUK requires AVCL ≥ +5V/V, while MAX4452EUK is unity-gain stable. Swapping them without adjusting external gain resistors may result in instability or bandwidth loss. Layout reuse is possible, but circuit validation is required.