Analog Devices Inc./Maxim Integrated MAX4528CSA+

Overview

The MAX4528CSA+ from Maxim Integrated is a low-voltage, CMOS phase-reversal analog switch configured as a 4-terminal bridge (A/B inputs, X/Y outputs) with single-logic-control (IN) for polarity inversion. It operates from +2.7V to +12V single supply or ±2.7V to ±6V dual supplies, delivers ≤110Ω on-resistance (±5V), <100ns transition time, and 5pC max charge injection-enabling precision chopper-stabilized amplifiers and balanced modulators.

For engineers reviewing the MAX4528CSA+ datasheet, MAX4528CSA+ pinout, MAX4528CSA+ application, or MAX4528CSA+ equivalent, key selection criteria include rail-to-rail signal handling (V− to V+), matched on-resistance (≤7Ω), TTL/CMOS-compatible logic thresholds (0.8V–2.4V), leakage current (0.5nA at +25°C), and SO-8 package compatibility with industrial temperature range (0°C to +70°C).

Technical Context

The MAX4528CSA+ implements a fully integrated bridge topology with 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 minimizing DC offset in chopper circuits.

It supports both bipolar and single-supply operation with independent analog and digital supply domains: V+ powers logic and analog switches, V− sets negative rail (or GND in single-supply mode), and GND serves only digital reference-no analog ground path exists. ESD protection (>2kV per Method 3015.7) is implemented via diodes to V+ and V− on all analog pins.

Key Specifications

Pinout & Package

MAX4528CSA+ uses an 8-pin SO (Small Outline) package with exposed pad not electrically connected. Pin functions are symmetric and bidirectional: A/B serve as analog inputs, X/Y as analog outputs, IN controls phase state, V+ and V− define analog rails, GND is digital reference only.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4528CSA+, MAX4526ESA+ offers extended voltage range but higher R_ON, while ADG1419BRMZ provides lower resistance in a different topology requiring external control logic-neither is pin- or function-compatible, making MAX4528CSA+ uniquely optimized for integrated, low-voltage phase reversal.

Availability

MAX4528CSA+ is available at Aetrix Electronics and suitable for chopper-stabilized amplifiers, balanced modulators/demodulators, and data acquisition systems requiring stable component supply, long-term manufacturability, and guaranteed SO-8 packaging consistency.

Supply support for MAX4528CSA+ 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 applications.

The MAX4528CSA+ belongs to Maxim's precision analog switch product line, engineered specifically for low-distortion, low-offset signal conditioning in chopper and modulation circuits demanding rail-to-rail operation and tight matching.

FAQ

What is the operating temperature range for the MAX4528CSA+?

The MAX4528CSA+ is rated for 0°C to +70°C ambient operation. This commercial-grade temperature range is confirmed in the Ordering Information table and applies specifically to the 'C' grade suffix (CSA = SO-8, C-temp). It is not rated for extended industrial (–40°C to +85°C) operation like the MAX4528ESA+ variant.

Can the MAX4528CSA+ operate from a single 3.3V supply?

Yes, the MAX4528CSA+ supports +2.7V to +12V single-supply operation. With V− tied to GND and V+ = 3.3V, it delivers ≤900Ω on-resistance and ≤400ns transition time. Logic thresholds remain valid (VINL = 0.6V, VINH = 0.9V min/max), and rail-to-rail analog range becomes 0V to 3.3V - verified in the +3V Single Supply Electrical Characteristics table.

Does the MAX4528CSA+ require external bypass capacitors?

Yes, bypassing is required for stable operation. The Applications Information section explicitly recommends placing 0.1µF ceramic capacitors from V+ and V− to GND, placed as close as possible to the respective pins. This minimizes supply noise coupling into analog paths and is essential for achieving specified carrier suppression in modulator applications.

Is the MAX4528CSA+ pin-compatible with other MAX452x variants?

Yes, all MAX4528 variants (CPA, CSA, CUA, EPA, ESA, EUA) share identical 8-pin pinouts across DIP, SO, and µMAX packages. The MAX4528CSA+ uses the same top-view layout shown in the Pin Configuration diagram: Pin 1 = A, Pin 2 = B, Pin 3 = GND, Pin 4 = IN, Pin 5 = V−, Pin 6 = Y, Pin 7 = X, Pin 8 = V+. Functionality and timing are identical across packages.

What is the maximum analog signal frequency supported by the MAX4528CSA+?

The MAX4528CSA+ is characterized for DC and low-frequency phase reversal, with typical use 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/resistance imbalances - the datasheet explicitly states "higher frequencies are possible, but… gradually impair performance."