Analog Devices Inc./Maxim Integrated MAX4526ESA+

Overview

MAX4526ESA+ 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 MAX4526ESA+ datasheet, MAX4526ESA+ pinout, MAX4526ESA+ application, or MAX4526ESA+ equivalent, key selection criteria include guaranteed break-before-make timing (1–5ns), 10pC max charge injection, TTL/CMOS-compatible logic thresholds (0.8V–2.4V), and −40°C to +85°C industrial temperature rating in an 8-pin SO package.

Technical Context

The MAX4526ESA+ 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 signal-phase reversal without external components. Its internal logic-level translator drives N- and P-channel MOSFET gates with complementary V+ and V− signals, ensuring low on-resistance across the full analog range.

Designed for DC and low-frequency (<100kHz) phase-reversal applications, it features matched on-resistance flatness (12Ω typ), >65dB off-isolation at 1MHz, and symmetrical leakage performance (0.5nA @ +25°C, 10nA @ +85°C), with ESD protection exceeding 2kV per Method 3015.7.

Key Specifications

Pinout & Package

MAX4526ESA+ uses an 8-pin SO (Small Outline) package, 150-mil body width, with standard SOIC footprint and gull-wing leads. Pin 1 is marked by a beveled corner or dot; device orientation follows JEDEC MS-012.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4527ESA+, the MAX4526ESA+ delivers 2.5× faster switching for high-frequency chopper designs; compared with ADG1419BRMZ, it integrates the full bridge topology in one SO-8 package, eliminating layout-dependent matching errors and reducing component count by four passive devices.

Availability

MAX4526ESA+ is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators/demodulators, and data acquisition systems requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for MAX4526ESA+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.

The MAX4526/MAX4527 product line was designed specifically for precision DC and low-frequency phase-reversal applications - targeting chopper amplifiers, self-calibrating systems, and balanced modulation where symmetry, low leakage, and rail-to-rail operation are mandatory.

FAQ

What is the maximum operating frequency for phase-reversal switching with MAX4526ESA+?

The MAX4526ESA+ is characterized for optimal performance up to 100kHz in balanced modulator applications. Its <100ns transition time supports effective chopper frequencies into the low MHz range, though AC symmetry and carrier suppression degrade above 100kHz due to internal capacitance imbalances. For best results, use ±15V supplies and maintain 50% duty-cycle logic drive on the IN pin.

Can MAX4526ESA+ operate from a single +12V supply?

Yes, MAX4526ESA+ supports single-supply operation from +4.5V to +36V. To use +12V, connect V− to GND, tie GND to digital ground, and ensure analog signals remain within 0V to +12V. Note that on-resistance increases slightly versus ±15V operation, and logic thresholds remain TTL/CMOS-compatible as specified.

Does MAX4526ESA+ require external pull-up or pull-down resistors on the IN pin?

No, MAX4526ESA+ does not require external biasing on the IN pin. Its logic inputs have defined TTL/CMOS thresholds (0.8V low, 2.4V high) and internal ESD protection to V+ and V−. The IN pin accepts clean digital signals directly from microcontrollers or logic gates without pull resistors - even when V− is negative.

How does MAX4526ESA+ achieve guaranteed break-before-make timing?

MAX4526ESA+ uses an internal delay circuit in its logic-level translator to enforce a minimum 1ns (typical 3ns) interval between turn-off of one switch pair and turn-on of the complementary pair. This is verified across temperature and supply voltage, preventing momentary cross-conduction that could disrupt feedback loops or damage downstream circuitry.

Is MAX4526ESA+ pin-compatible with MAX4526EUA+ or MAX4526EPA+?

Yes, MAX4526ESA+, MAX4526EUA+, and MAX4526EPA+ share identical pinout and electrical specifications. They differ only in package: SO (ESA+), µMAX (EUA+), and plastic DIP (EPA+). All three are drop-in replacements in terms of connectivity and thermal derating - though SO and µMAX offer superior high-frequency performance due to lower parasitic inductance.