Analog Devices Inc./Maxim Integrated MAX4527CUA+

Overview

MAX4527CUA+ from Maxim Integrated is a low-power phase-reversal analog switch IC configured as a bridge of two normally open and two normally closed CMOS switches. It operates from +4.5V to +36V single supply or ±4.5V to ±18V dual supplies, delivers 175Ω max on-resistance with 8Ω max matching, handles rail-to-rail analog signals (V− to V+), and consumes only 1µA at +25°C - ideal for chopper-stabilized amplifiers requiring precision DC reversal and minimal power draw.

For engineers reviewing the MAX4527CUA+ datasheet, MAX4527CUA+ pinout, MAX4527CUA+ application, or MAX4527CUA+ equivalent, key selection considerations include guaranteed break-before-make timing (1–5ns), 10pC max charge injection, rail-to-rail signal handling, TTL/CMOS-compatible logic inputs, and µMAX-8 package compatibility for space-constrained instrumentation and self-calibrating sensor front-ends.

Technical Context

The MAX4527CUA+ implements a fully integrated bridge topology where analog inputs A and B are routed to outputs X and Y under logic control of the IN pin, enabling true polarity inversion without external components. Its internal logic-level translator drives N- and P-channel MOSFETs out-of-phase using V+ and V−, ensuring symmetrical conduction across the full analog range.

Unlike discrete switch configurations, the device guarantees matched on-resistance (≤8Ω), low leakage (0.5nA at +25°C), and <100ns transition time with ±15V supplies - all while maintaining >2kV ESD protection and break-before-make operation to prevent momentary shorting during state transitions.

Key Specifications

Pinout & Package

MAX4527CUA+ uses an 8-pin µMAX package (3.05mm × 3.05mm × 0.91mm, 0.65mm pitch), optimized for compact PCB layouts and thermal performance in instrumentation-grade designs.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar phase-reversal analog switch applications.

Compared with MAX4526CUA+, the MAX4527CUA+ trades speed for 1000× lower quiescent current - making it superior for energy-sensitive chopper systems. Against ADG1419BRMZ, it delivers integrated bridge functionality, tighter matching, and inherent break-before-make - reducing design risk and board area in new precision analog layouts.

Availability

MAX4527CUA+ is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators, data acquisition systems, test equipment, and audio-signal routing requiring stable component supply, long-term manufacturability, and guaranteed parametric performance across 0°C to +70°C.

Supply support for MAX4527CUA+ 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) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, medical, and communications applications.

The MAX4526/MAX4527 product line was designed specifically for precision DC and low-frequency phase-reversal tasks - targeting chopper amplifiers, self-calibrating sensors, and balanced modulation where symmetry, leakage, and charge injection critically impact accuracy.

FAQ

What is the operating temperature range for MAX4527CUA+?

The MAX4527CUA+ is specified for commercial temperature operation from 0°C to +70°C. This range is confirmed in the Ordering Information table and Absolute Maximum Ratings section of the datasheet. The 'C' grade suffix in MAX4527CUA+ explicitly denotes this 0°C to +70°C rating, distinguishing it from the extended −40°C to +85°C 'E' grade variants like MAX4527EUA+. No derating or qualification beyond this range is guaranteed for the MAX4527CUA+.

Does MAX4527CUA+ support single-supply operation?

Yes, MAX4527CUA+ supports single-supply operation from +4.5V to +36V. Per the General Description and Power-Supply Considerations sections, V− must be connected to GND in this configuration. All analog signal handling remains rail-to-rail (0V to V+), and logic thresholds remain TTL/CMOS-compatible. The device retains its 175Ω max on-resistance and 10pC max charge injection under single-supply conditions, as verified in Typical Operating Characteristics plots.

How does MAX4527CUA+ achieve break-before-make switching?

MAX4527CUA+ guarantees break-before-make operation with a 1–5ns delay, as specified in the Switch Dynamic Characteristics table. This is implemented via internal timing control in the logic-level translator and switch driver circuitry - ensuring the old signal path is fully disconnected before the new path is established. This prevents momentary shorting between A/B and X/Y, which is critical in chopper amplifier integrator nodes where even nanosecond overlap could cause saturation or offset corruption.

Can MAX4527CUA+ handle signals beyond the supply rails?

No, MAX4527CUA+ cannot safely handle analog signals beyond V+ or V−. Internal ESD-protection diodes clamp any signal exceeding these rails, limiting the valid analog range to V− ≤ VA, VB, VX, VY ≤ V+. Exceeding these limits risks forward-biasing the diodes and exceeding the ±20mA continuous current rating, potentially damaging the device. The datasheet explicitly states "Analog-Signal Range" as V− to V+ in Electrical Characteristics.

What is the significance of the µMAX package for MAX4527CUA+?

MAX4527CUA+ uses the 8-pin µMAX package (3.05mm × 3.05mm), a miniature SO-style outline with fine 0.65mm pitch. This package reduces PCB footprint by ~50% versus standard SO-8 and improves thermal resistance over DIP variants - critical for dense instrumentation layouts and thermally sensitive chopper circuits. Its exposed pad-less construction and tight dimensional tolerances (per Package Information drawings) ensure consistent solder joint reliability in automated assembly.