Analog Devices Inc./Maxim Integrated MAX306EQI-TG07

Overview

MAX306EQI-TG07 from Maxim Integrated is a precision 1-of-16 single-ended CMOS analog multiplexer with ≤100Ω on-resistance, <5Ω channel-to-channel matching, and <10pC charge injection. It operates from ±4.5V to ±20V or +5V to +30V supplies, supports rail-to-rail signal handling up to ±15V, and is rated for -40°C to +85°C industrial temperature range in 28-pin PLCC package. It serves as a plug-in upgrade for DG406/DG506A in precision data acquisition systems.

For engineers reviewing the MAX306EQI-TG07 datasheet, MAX306EQI-TG07 pinout, MAX306EQI-TG07 application, or MAX306EQI-TG07 equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), low leakage (<2.5nA NO-off at +85°C), fast transition time (<250ns), ESD protection (>2000V), and compatibility with TTL/CMOS logic inputs across dual or single supply configurations.

Technical Context

The MAX306EQI-TG07 implements a monolithic CMOS decoder-multiplexer architecture with four address lines (A0–A3), active-high enable (EN), and one bidirectional common output (COM) switching among 16 independent analog inputs (NO1–NO16). Its silicon-gate process ensures matched R_ON and minimal charge injection critical for sample-and-hold accuracy.

All digital inputs maintain TTL/CMOS voltage thresholds (VAL ≤ 0.8V, VAH ≥ 2.4V), while analog terminals tolerate signals from (V− −2V) to (V+ +2V). The device guarantees break-before-make timing (t_OPEN ≤ 40ns) and exhibits <10pC charge injection-enabling sub-12-bit settling in high-precision instrumentation without external correction.

Key Specifications

Pinout & Package

MAX306EQI-TG07 is housed in a 28-pin PLCC (Plastic Leaded Chip Carrier) package with gull-wing leads, RoHS-compliant, and rated for -40°C to +85°C operation. The package provides robust thermal performance (derating 10.53mW/°C above +70°C) and mechanical stability for reflow-soldered industrial PCBs.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG406BRZ and TMUX1308PWR, the MAX306EQI-TG07 uniquely combines 16-channel count, bipolar supply support, guaranteed R_ON matching (<5Ω), and <10pC charge injection-making it the only option qualified for precision sample-and-hold and military-grade test instrumentation where parameter consistency across temperature and signal range is mandatory.

Availability

MAX306EQI-TG07 is available at Aetrix Electronics and suitable for industrial test equipment, avionics heads-up displays, and military communications systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for MAX306EQI-TG07 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, mixed-signal, and power management ICs for industrial, automotive, and communications markets, with emphasis on precision, reliability, and integration.

The MAX306/MAX307 family was engineered specifically for high-fidelity analog signal routing in demanding environments-delivering low distortion, tight parameter matching, and robust ESD tolerance for test, measurement, and defense applications.

FAQ

What is the maximum analog signal range supported by the MAX306EQI-TG07?

The MAX306EQI-TG07 supports an analog signal range of ±15V when operated with ±15V dual supplies, or 0V to +12V with a +12V single supply. The absolute maximum ratings allow V_NO/V_COM to swing from (V− −2V) to (V+ +2V), but guaranteed performance is specified across ±15V with ±15V supplies. This makes MAX306EQI-TG07 suitable for interfacing with industrial sensors and legacy instrumentation that require full rail-to-rail analog handling.

Is the MAX306EQI-TG07 pin-compatible with the DG406?

Yes, the MAX306EQI-TG07 is a direct pin-compatible upgrade for the DG406 in 28-pin PLCC packages. All pin functions-including V+, V−, COM, NO1–NO16, A0–A3, EN, and GND-match identically. The MAX306EQI-TG07 improves upon the DG406 with lower on-resistance (≤100Ω vs. ≤120Ω), tighter matching (<5Ω vs. unspecified), and enhanced ESD protection (>2000V vs. ~200V), requiring no PCB changes.

What is the guaranteed on-resistance flatness specification for MAX306EQI-TG07?

The MAX306EQI-TG07 guarantees on-resistance flatness of ≤7Ω maximum across the full specified analog signal range (±10V) at +25°C, and ≤10Ω over the full -40°C to +85°C temperature range. Flatness is defined as the difference between maximum and minimum R_ON measured at signal extremes, ensuring consistent gain and minimal harmonic distortion in precision amplifier and filter applications using MAX306EQI-TG07.

Does MAX306EQI-TG07 support unbalanced supply configurations?

Yes, the MAX306EQI-TG07 supports unbalanced supplies such as +24V and -5V, provided the total voltage difference (V+ − V−) does not exceed +44V. This flexibility allows integration into hybrid power systems-for example, leveraging existing +24V rails while adding a local -5V bias for analog signal centering-without redesigning the power architecture around MAX306EQI-TG07.

How does the charge injection performance of MAX306EQI-TG07 impact sample-and-hold accuracy?

The MAX306EQI-TG07 guarantees charge injection of <10pC, which-when driving a typical 1nF hold capacitor-results in ≤10mV switching glitch. In a 12-bit system with ±10V full-scale range (≈5mV/LSB), this keeps switching-induced errors below 2 LSB, enabling accurate sampling without additional blanking or correction circuitry. This performance is validated across temperature and supply conditions for MAX306EQI-TG07.