Analog Devices Inc./Maxim Integrated MAX4528CUA

Overview

MAX4528CUA from Maxim Integrated is a low-voltage, phase-reversal analog switch IC configured as a bridge-switch topology for polarity inversion in chopper-stabilized amplifiers. It operates from +2.7V to +12V single supply or ±2.7V to ±6V dual supplies, delivers ≤110Ω on-resistance (±5V), <100ns transition time (±5V), and 5pC max charge injection. Its rail-to-rail signal handling supports precision DC/low-frequency phase reversal in instrumentation front-ends.

For engineers reviewing the MAX4528CUA datasheet, MAX4528CUA pinout, MAX4528CUA application, or MAX4528CUA equivalent, key selection criteria include on-resistance matching (≤7Ω), leakage current (0.5nA at +25°C), TTL/CMOS-compatible logic thresholds (0.8V–2.4V), and µMAX-8 package compatibility with space-constrained chopper amplifier layouts.

Technical Context

The MAX4528CUA implements a fully integrated bridge configuration of two normally open and two normally closed CMOS switches, enabling true differential phase reversal without external wiring. Its internal logic-level translator drives N- and P-channel MOSFETs out-of-phase using V+ and V−, ensuring symmetrical conduction paths and minimized charge injection mismatch.

Analog signal routing occurs between pins A/B (inputs) and X/Y (outputs), with IN controlling cross-coupling: IN = LOW connects A→Y and B→X; IN = HIGH connects A→X and B→Y. All analog terminals support rail-to-rail operation from V− to V+, and ESD protection exceeds 2kV per Method 3015.7.

Key Specifications

Pinout & Package

MAX4528CUA is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), optimized for high-density PCB layouts in portable instrumentation and embedded signal conditioning modules.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4528CUA, MAX4526CUA offers simpler topology but demands external components to achieve phase reversal, while ADG1419BRMZ provides higher voltage tolerance at the cost of degraded chopper-specific parameters like charge injection and R_ON matching - making MAX4528CUA uniquely optimized for low-voltage, high-fidelity chopper amplifier signal paths.

Availability

MAX4528CUA is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators/demodulators, and data acquisition front-ends requiring stable component supply, long-term manufacturability, and µMAX-8 footprint consistency.

Supply support for MAX4528CUA 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 consumer applications.

The MAX4528CUA belongs to Maxim's precision analog switch product line, designed specifically for low-voltage, low-distortion phase-reversal tasks in chopper amplifiers, modulators, and auto-calibrating measurement systems.

FAQ

What is the operating temperature range for the MAX4528CUA?

The MAX4528CUA is specified for operation from 0°C to +70°C. This commercial-grade temperature range aligns with its intended use in benchtop test equipment, industrial data loggers, and embedded instrumentation where ambient conditions remain controlled. The device's leakage current remains below 0.5nA at +25°C and rises to 20nA at +85°C - confirming thermal stability within its rated range. Full electrical specifications for the MAX4528CUA are guaranteed across this interval without derating.

Can the MAX4528CUA operate from a single 3.3V supply?

Yes, the MAX4528CUA supports single-supply operation from +2.7V to +12V, including +3.3V. When V− is tied to GND, the analog signal range becomes 0V to +3.3V, and on-resistance increases to 250Ω–900Ω (typical). Logic thresholds adjust accordingly (VINL = 0.6V, VINH = 0.9V), maintaining TTL/CMOS compatibility. Transition time extends to 150–400ns, and charge injection remains ≤5pC - preserving usability in low-voltage portable chopper designs.

How does the MAX4528CUA achieve phase reversal without external components?

The MAX4528CUA achieves phase reversal via an integrated bridge configuration: two complementary switch pairs route A↔X/Y and B↔X/Y under IN control. With IN = LOW, A connects to Y and B to X; with IN = HIGH, A connects to X and B to Y - inherently swapping signal polarity across outputs. This monolithic topology eliminates discrete wiring, reduces parasitic imbalance, and ensures matched R_ON (≤7Ω) and charge injection - unlike external SPDT-based solutions requiring manual balancing.

What is the maximum analog signal frequency supported by the MAX4528CUA?

The MAX4528CUA is optimized for DC and low-frequency phase reversal, with usable bandwidth up to ~100kHz in balanced modulator applications. Its −3dB bandwidth exceeds 10MHz (per Figure 12), but carrier suppression degrades above 100kHz due to internal capacitance mismatch. For chopper amplifiers, it reliably supports switching frequencies up to 1MHz, limited primarily by transition time (<100ns) and charge injection-induced settling - not small-signal bandwidth.

Does the MAX4528CUA require external bypass capacitors?

Yes, the MAX4528CUA requires 0.1µF ceramic capacitors placed as close as possible between V+ and GND, and between V− and GND. These bypass capacitors stabilize supply rails during fast switching transitions, minimize supply-induced crosstalk, and maximize carrier suppression in modulator applications. Omitting them increases transition-time jitter, degrades isolation (>68dB), and raises susceptibility to logic coupling into analog paths - especially critical in chopper-stabilized amplifier feedback loops where noise directly impacts offset stability.