Analog Devices Inc./Maxim Integrated MAX4527ESA+

Overview

MAX4527ESA+ from Maxim Integrated is a low-power phase-reversal analog switch IC configured as a bridge-switch array for polarity inversion of balanced analog signals. 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 signal handling up to ±15V, and consumes only 1µA at +25°C - ideal for chopper-stabilized amplifiers and self-calibrating sensor front-ends.

For engineers reviewing the MAX4527ESA+ datasheet, MAX4527ESA+ pinout, MAX4527ESA+ application, or MAX4527ESA+ equivalent, key selection criteria include guaranteed break-before-make timing (1–5ns), 10pC max charge injection, <100ns transition time with ±15V supplies, TTL/CMOS-compatible logic thresholds (0.8V–2.4V), and SO-8 package compatibility with industrial temperature range (–40°C to +85°C).

Technical Context

The MAX4527ESA+ implements a four-switch bridge topology with two normally open and two normally closed CMOS paths, enabling true differential phase reversal under single logic control (IN pin). Its internal logic-level translator drives N- and P-channel MOSFET gates out-of-phase using V+ and V−, ensuring symmetrical conduction without ground reference for analog paths.

Unlike discrete bridge implementations, it guarantees matched on-resistance flatness (12Ω typ) and charge-injection matching (2pC max) across A-X/A-Y/B-X/B-Y paths. The device exhibits no DC path to GND - analog signals are strictly bounded between V− and V+, and leakage flows solely to supply rails via ESD diodes, not between terminals.

Key Specifications

Pinout & Package

MAX4527ESA+ is housed in an 8-pin SO (Small Outline) package, 150-mil width, with gull-wing leads and JEDEC MS-012AC compliance. Pin 1 is marked by a beveled corner or dot; pin numbering proceeds counterclockwise.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4527ESA+, MAX4527EUA+ offers identical performance in a smaller package but reduced power dissipation margin, while ADG1419BRUZ trades bipolar operation, guaranteed break-before-make, and ultra-low charge injection for integrated digital control - making it unsuitable as a drop-in replacement but viable for less demanding unipolar applications.

Availability

MAX4527ESA+ 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 MAX4527ESA+ 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, communications, and computing applications.

The MAX4526/MAX4527 product line was designed specifically for precision DC and low-frequency phase-reversal tasks - including chopper stabilization, balanced modulation, and self-calibrating measurement systems - where matched analog performance and rail-to-rail operation are mandatory.

FAQ

What is the operating temperature range for MAX4527ESA+?

The MAX4527ESA+ is rated for operation from –40°C to +85°C, as confirmed by its "E" grade designation and SO-8 packaging qualification. This extended industrial temperature range ensures reliability in harsh environments such as factory automation, motor control feedback loops, and outdoor instrumentation - unlike the "C" grade (0°C to +70°C) versions. All electrical specifications in the datasheet are guaranteed across this full range.

Can MAX4527ESA+ operate from a single supply?

Yes, MAX4527ESA+ supports single-supply operation from +4.5V to +36V by connecting the V− pin to GND. In this configuration, analog signals swing from 0V to V+, and the internal logic remains fully functional. However, bipolar operation (±4.5V to ±18V) is required to achieve optimal AC symmetry and carrier suppression in modulator applications - single-supply use is validated for chopper amps and data acquisition where ground-referenced signals dominate.

Does MAX4527ESA+ require external pull-up or pull-down resistors on the IN pin?

No, MAX4527ESA+ does not require external biasing on the IN pin. Its logic inputs have internally defined TTL/CMOS-compatible thresholds (0.8V low, 2.4V high) and ESD protection diodes to V+ and V− - allowing direct connection to microcontroller GPIOs, FPGA outputs, or logic gates. Driving IN below V− (e.g., –15V) is permitted and safe due to the absence of GND-referenced clamping diodes.

How does MAX4527ESA+ differ from MAX4526ESA+ in practical design?

MAX4527ESA+ and MAX4526ESA+ share identical analog switch characteristics (RON, leakage, charge injection, isolation), but differ in logic driver speed and supply current: MAX4527ESA+ consumes only 1µA and has slower transition time (<100ns), while MAX4526ESA+ draws ~1.5mA and achieves <95ns transition. Choose MAX4527ESA+ for battery-powered or low-power chopper systems; select MAX4526ESA+ only when operating above 100kHz carrier frequencies or requiring tighter timing margins.

Is MAX4527ESA+ pin-compatible with other packages of the same part number?

Yes, all MAX4527 variants - including MAX4527CPA (DIP), MAX4527CSA (SO), MAX4527CUA (µMAX), MAX4527EPA (DIP), MAX4527ESA+ (SO), and MAX4527EUA+ (µMAX) - share identical pinouts and functions across packages. The "ESA+" suffix denotes the SO-8 package with extended temperature range; no PCB redesign is needed when migrating from CSA to ESA+ or from EUA+ to ESA+, provided SO-8 footprint and thermal constraints are met.