Analog Devices Inc./Maxim Integrated MAX4676EUT+TG002

Overview

MAX4676EUT+TG002 from Maxim Integrated is a single-pole, single-throw (SPST) analog switch with normally closed (NC) configuration, designed for precision signal routing in low-distortion, rail-to-rail applications. It delivers 3Ω maximum on-resistance (RON), 0.7Ω RON flatness, and <0.1nA off-leakage at +25°C, operating from dual ±2.7V to ±5.5V or single +2.7V to +5.5V supplies in a 6-pin SOT23 package.

For engineers reviewing the MAX4676EUT+TG002 datasheet, MAX4676EUT+TG002 pinout, MAX4676EUT+TG002 application, or MAX4676EUT+TG002 equivalent, key selection criteria include NC switching behavior, sub-1nA leakage performance, 250MHz -3dB bandwidth, and compatibility with automated test equipment, audio routing, and ADC front-end multiplexing where mechanical relay replacement is required.

Technical Context

The MAX4676EUT+TG002 implements a CMOS transmission-gate architecture optimized for bidirectional analog signal switching with minimal distortion. Its NC topology ensures default conduction path closure when the logic input is low, enabling fail-safe signal continuity in power-loss scenarios.

It supports rail-to-rail analog voltage handling across the full supply range, maintains consistent RON flatness (<0.7Ω typ) over ±3.3V signal swing under dual-supply operation, and achieves -75dB off-isolation at 1MHz with 250MHz on-channel bandwidth-critical for high-fidelity communications and data-acquisition systems.

Key Specifications

Pinout & Package

MAX4676EUT+TG002 is housed in a space-saving 6-pin SOT23-6 package (JEDEC MO-178AA), with exposed pad not electrically connected. Pin 1 is marked with a dot; orientation follows standard SOT23 top-view layout.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG1419BRMZ and TS5A23157DCUR, the MAX4676EUT+TG002 uniquely balances dual-supply flexibility, NC fail-safe behavior, and 3Ω RON in SOT23 - making it the only option meeting simultaneous requirements for ATE multiplexers, avionics redundancy, and rail-to-rail 75Ω video routing without layout redesign.

Availability

MAX4676EUT+TG002 is available at Aetrix Electronics and suitable for automated test equipment, audio signal routing, data-acquisition front-ends, and avionics sensor interfaces requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.

Supply support for MAX4676EUT+TG002 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 fabless semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and computing markets.

The MAX4675/MAX4676 family was engineered specifically for mechanical relay replacement in high-reliability, low-distortion analog signal routing - emphasizing ultra-low leakage, rail-to-rail operation, and NC/NO variants for fail-safe system design.

FAQ

What is the default state of the MAX4676EUT+TG002 analog switch?

The MAX4676EUT+TG002 is a normally closed (NC) switch: it conducts between COM and NC terminals when the IN pin is logic low (≤0.8V). Conduction ceases only when IN is driven high (≥2.4V). This fail-safe behavior ensures signal continuity during power-up, reset, or controller failure - a critical feature in avionics and medical instrumentation where uninterrupted monitoring is required. The MAX4676EUT+TG002 does not require external pull-down resistors to maintain default closure.

Can the MAX4676EUT+TG002 operate from a single 3.3V supply?

Yes, the MAX4676EUT+TG002 supports single-supply operation from +2.7V to +5.5V. At V+ = +3.3V, typical on-resistance is 1.6Ω (max 7.5Ω), RON flatness remains ≤2Ω, and off-isolation is −65dB at 1MHz. However, rail-to-rail analog signal range is limited to 0V to 3.3V - unlike dual-supply mode which supports ±3.3V swing. For 3.3V-only systems with ground-referenced signals (e.g., microcontroller I/O expansion), the MAX4676EUT+TG002 functions reliably with proper decoupling and logic-level compatibility.

What is the maximum analog signal frequency the MAX4676EUT+TG002 can handle without significant attenuation?

The MAX4676EUT+TG002 provides a −3dB on-channel bandwidth of 250MHz under dual ±5V supply conditions (RS = RL = 50Ω). This allows full-amplitude passage of signals up to ~250MHz, making it suitable for composite video (4.2MHz), USB 1.1 (12MHz), and intermediate-frequency (IF) stages in communications receivers. Bandwidth drops to 150MHz in single-supply mode due to reduced slew rate; actual usable frequency depends on source/load impedance and PCB layout parasitics - keep trace lengths short and minimize capacitance at COM/NC pins to preserve high-frequency response.

How does charge injection affect circuit performance when using the MAX4676EUT+TG002 in sample-and-hold applications?

The MAX4676EUT+TG002 exhibits 87pC typical charge injection (Q) under dual-supply conditions, measured with RGEN = 0Ω and CL = 1nF. In sample-and-hold circuits, this injected charge causes a voltage glitch ΔV = Q/CL on the hold capacitor - e.g., 87mV error on a 1nF cap. To mitigate, use smaller hold capacitors (e.g., 100pF yields 0.87mV glitch) or add a small series resistor (10–50Ω) between switch and cap to dampen transient currents. The MAX4676EUT+TG002's low Q value is among the best in its class, enabling 12-bit+ accuracy in multiplexed ADC front-ends when properly compensated.

Is thermal shutdown or overcurrent protection built into the MAX4676EUT+TG002?

No, the MAX4676EUT+TG002 does not include thermal shutdown or overcurrent protection circuitry. It relies on external design safeguards: absolute maximum ratings limit continuous analog current to ±100mA per terminal (COM/NC), peak pulsed current to ±200mA (1ms, 10% duty cycle), and junction temperature to +150°C. Designers must ensure power dissipation stays within 691mW at +70°C ambient (derating 8.7mW/°C above), typically achieved by limiting RON × I² heating and maintaining adequate PCB copper area under the SOT23-6 exposed pad. Exceeding these limits risks permanent parametric shift or bond-wire failure - the MAX4676EUT+TG002 operates strictly within safe linear region assumptions.