Analog Devices Inc./Maxim Integrated MAX4526CUA+

Overview

MAX4526CUA+ from Maxim Integrated is a high-speed 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 ±18V dual supplies or +4.5V to +36V single supply, delivers 175Ω max on-resistance with 8Ω matching, supports rail-to-rail analog signals up to ±15V, and achieves <100ns transition time - enabling precise polarity inversion in chopper-stabilized amplifiers.

For engineers reviewing the MAX4526CUA+ datasheet, MAX4526CUA+ pinout, MAX4526CUA+ application, or MAX4526CUA+ equivalent, this device is selected for low-charge-injection (≤10pC), guaranteed break-before-make timing (1–5ns), TTL/CMOS-compatible logic inputs, and µMAX-packaged signal-path symmetry in precision DC/low-frequency phase reversal circuits.

Technical Context

The MAX4526CUA+ implements a fully integrated bridge topology with four bidirectional analog paths (A–X, A–Y, B–X, B–Y), where logic input IN controls signal routing to invert or preserve phase between differential inputs A/B and outputs X/Y. Its internal logic-level translator drives N- and P-channel MOSFET gates with out-of-phase signals referenced to V+ and V−, enabling rail-to-rail operation without ground reference.

It features matched on-resistance flatness (≤12Ω), 2pC max charge-injection matching, and >65dB off-isolation at 1MHz - all specified under ±15V supplies and validated across −40°C to +85°C. ESD protection exceeds 2kV per Method 3015.7, and leakage remains ≤10nA at +85°C.

Key Specifications

Pinout & Package

MAX4526CUA+ uses an 8-pin µMAX package (2.1mm × 1.6mm, 0.5mm pitch), optimized for space-constrained PCB layouts while maintaining analog-digital isolation. Pin functions are electrically symmetric: A/B serve as interchangeable analog inputs; X/Y as outputs; IN controls phase reversal; GND is digital ground reference; V+ and V− set analog rail limits.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4527CUA+, the MAX4526CUA+ prioritizes speed and drive strength for chopper and modulator use, while ADG1419BRMZ trades integrated bridge functionality for ultra-low on-resistance in simpler topologies - neither offers pin-compatible replacement without schematic or layout revision.

Availability

MAX4526CUA+ is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators/demodulators, and precision data acquisition systems requiring stable component supply, long-term manufacturability, and guaranteed parametric performance across −40°C to +85°C.

Supply support for MAX4526CUA+ 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 industrial, medical, and communications infrastructure.

The MAX4526/MAX4527 product line was engineered specifically for high-fidelity DC and low-frequency phase-reversal tasks - delivering matched switch performance, low charge injection, and rail-to-rail operation in minimal 8-pin µMAX form factor.

FAQ

What is the operating temperature range for MAX4526CUA+?

The MAX4526CUA+ is rated for −40°C to +85°C ambient operation. This extended industrial temperature range ensures reliable performance in demanding environments such as automated test equipment and factory-floor instrumentation. All key parameters - including on-resistance, leakage current, and transition time - are fully specified and tested across this range, with typical values characterized at +25°C.

Can MAX4526CUA+ operate from a single supply?

Yes, MAX4526CUA+ supports single-supply operation from +4.5V to +36V by connecting V− to GND. In this mode, analog signals swing from 0V to V+, preserving rail-to-rail capability. However, bipolar supply characterization (±15V) defines all guaranteed specifications; single-supply performance - especially leakage and distortion - should be verified per application conditions using the provided typical curves.

Does MAX4526CUA+ require external components for stable operation?

Yes - bypass capacitors are mandatory: 0.1µF ceramic capacitors must be placed as close as possible between V+ and GND, and between V− and GND. This minimizes supply noise coupling into analog paths and ensures optimal carrier suppression in modulator applications. No pull-up/down resistors are needed on IN, as its TTL/CMOS thresholds are internally defined and ESD-protected to V+ and V−.

How does MAX4526CUA+ achieve phase reversal without an external op-amp?

MAX4526CUA+ achieves phase reversal via its internal bridge configuration: when IN is LOW, A connects to Y and B connects to X; when IN is HIGH, A connects to X and B connects to Y. This cross-wired routing flips the differential relationship between inputs and outputs - effectively inverting signal polarity without active gain stages, feedback, or external components.

Is MAX4526CUA+ pin-compatible with MAX4527CUA+?

Yes, MAX4526CUA+ and MAX4527CUA+ share identical 8-pin µMAX packaging, pinout, and footprint. They differ only in internal logic driver speed and supply current - making them drop-in replacements in the same PCB layout. However, substituting MAX4527CUA+ for MAX4526CUA+ will reduce transition speed from <100ns to 250ns and cut supply current from ~1.5mA to ~1µA.