Analog Devices Inc./Maxim Integrated MAX4526CSA

Overview

MAX4526CSA from Maxim Integrated is a high-speed phase-reversal analog switch IC configured as a bridge-switch array with 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 (±15V), <100ns transition time, and rail-to-rail signal handling - enabling precise polarity inversion in chopper-stabilized amplifiers.

For engineers reviewing the MAX4526CSA datasheet, MAX4526CSA pinout, MAX4526CSA application, or MAX4526CSA equivalent, key selection criteria include guaranteed break-before-make timing (1–5ns), 10pC max charge injection, matched on-resistance (≤8Ω), and µMAX-8 package compatibility for space-constrained precision analog routing.

Technical Context

The MAX4526CSA implements a fully differential bridge topology where logic-controlled IN pin selects between two complementary signal paths: A→Y/B→X (IN = LOW) or A→X/B→Y (IN = HIGH). Its internal logic-level translator drives N- and P-channel MOSFET gates out-of-phase using V+ and V−, enabling true rail-to-rail analog conduction without ground reference.

Unlike discrete bridge implementations, the MAX4526CSA integrates matched switch pairs with ≤2pC charge-injection matching and ≤8Ω on-resistance mismatch - critical for minimizing DC offset and THD in self-zeroing circuits. ESD protection (>2kV per Method 3015.7) and TTL/CMOS-compatible inputs (0.8V–2.4V thresholds) ensure robust interfacing in mixed-signal systems.

Key Specifications

Pinout & Package

MAX4526CSA is housed in an 8-pin µMAX package (3.05mm × 3.05mm × 0.95mm, 0.65mm pitch), optimized for high-density PCB layouts and thermal performance (330mW max power dissipation at +70°C).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4527CSA, the MAX4526CSA trades higher supply current for 2.5× faster switching and superior carrier suppression in modulator applications; versus ADG1419BRMZ, it delivers integrated bridge functionality with guaranteed matching and break-before-make - reducing bill-of-materials and layout risk.

Availability

MAX4526CSA is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators/demodulators, and precision data acquisition systems requiring stable component supply across industrial temperature ranges (0°C to +70°C).

Supply support for MAX4526CSA 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 high-performance analog and mixed-signal ICs for precision, power, and interface applications - with emphasis on reliability and integration for demanding industrial and test environments.

The MAX4526/MAX4527 product line was engineered specifically for DC- and low-frequency phase-reversal tasks including chopper stabilization, balanced modulation, and self-calibrating circuits - delivering matched analog performance in minimal 8-pin µMAX form factor.

FAQ

What is the operating temperature range for the MAX4526CSA?

The MAX4526CSA is specified for operation from 0°C to +70°C ambient temperature. This commercial-grade rating aligns with its CSA suffix designation and supports use in non-extended-environment instrumentation, data acquisition modules, and benchtop test equipment where thermal management is controlled. The device's leakage current remains below 0.5nA at +25°C and rises to 10nA at +85°C - confirming its suitability within this defined range.

Can the MAX4526CSA operate from a single supply?

Yes, the MAX4526CSA 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+, maintaining rail-to-rail capability. All electrical specifications - including 175Ω max on-resistance and <100ns transition time - are validated under ±15V dual-supply conditions, but functional operation is confirmed across the full single-supply range per Absolute Maximum Ratings and Typical Operating Characteristics.

Does the MAX4526CSA require external components for basic operation?

No external components are required for core phase-reversal switching functionality of the MAX4526CSA. However, best practice recommends 0.1µF ceramic bypass capacitors placed as close as possible between V+ and GND, and V− and GND - especially in modulator/demodulator applications - to suppress supply noise and improve carrier suppression. The IN logic input is TTL/CMOS-compatible and needs no level-shifting when driven from standard digital sources.

How does the MAX4526CSA achieve break-before-make switching?

The MAX4526CSA integrates an internal timing circuit that guarantees a 1–5ns break interval between opening one switch path and closing the complementary path - verified under all supply and temperature conditions. This prevents momentary short-circuiting of analog inputs during polarity reversal, which is critical in feedback-based chopper amplifiers. The feature is inherent to the IC's architecture and requires no external timing components or control sequencing.

Is the MAX4526CSA pin-compatible with other variants in the MAX4526 family?

Yes, the MAX4526CSA shares identical pinout and footprint with all other MAX4526 variants in the 8-pin µMAX package (e.g., MAX4526CUA), as well as with MAX4527 µMAX variants. This allows direct substitution within the same package type without PCB redesign. However, temperature grade differences (e.g., MAX4526ESA is −40°C to +85°C) and performance distinctions (e.g., MAX4527CSA has slower transition time) must be verified for target application requirements.