Analog Devices Inc./Maxim Integrated DG442EEE

Overview

DG442EEE from Maxim Integrated is a quad, normally-open (NO), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in bipolar or single-supply systems. It delivers 85Ω max on-resistance, 4Ω max on-resistance matching between channels, <5nA off-leakage at +85°C, 10pC max charge injection, and rail-to-rail analog signal handling up to ±15.5V with ±15V supplies - enabling use in test equipment front-ends and audio multiplexing.

For engineers reviewing the DG442EEE datasheet, DG442EEE pinout, DG442EEE application, or DG442EEE equivalent, key selection criteria include guaranteed r_DS(ON) flatness (9Ω max), TTL/CMOS logic compatibility, ESD tolerance (2000V min), dual-supply operation (±4.5V to ±20V), and low power consumption (1.65mW max).

Technical Context

The DG442EEE implements four independent SPST switches with active-high digital control inputs (IN1–IN4), each connecting its dedicated source (S1–S4) to drain (D1–D4) when asserted. Its silicon-gate 44V process ensures robust operation across wide supply ranges and temperature extremes.

Switch behavior is fully specified under both bipolar (±4.5V to ±20V) and single-supply (+10V to +30V) conditions, with on-resistance matching and flatness guaranteed only under bipolar operation. Charge injection and off-leakage are characterized and tested at T_MAX, supporting reliable performance in sample-and-hold and battery-operated systems.

Key Specifications

Pinout & Package

Package: 16-pin Thin QFN-EP (5mm × 5mm) with exposed pad (EP); EP must be connected to V+ (not used as sole V+ connection).

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG442BRUZ and TS5A3154DCUR, the DG442EEE uniquely combines bipolar supply support, guaranteed on-resistance matching and flatness, and validated leakage performance at +85°C - making it the preferred choice for industrial test, aerospace, and high-fidelity audio routing where signal integrity and thermal stability are non-negotiable.

Availability

DG442EEE is available at Aetrix Electronics and suitable for test equipment multiplexing, audio signal routing, sample-and-hold front-ends, battery-powered data loggers, and military radio subsystems requiring stable component supply across extended temperature ranges.

Supply support for DG442EEE 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, communications, and computing applications.

The DG442EEE belongs to Maxim's precision analog switch product line, engineered specifically for applications demanding low distortion, tight channel matching, and robust operation across wide supply and temperature ranges.

FAQ

What is the maximum analog signal voltage range supported by the DG442EEE?

The DG442EEE supports rail-to-rail analog signals up to ±15.5V when operated with ±15V supplies, and up to +12V with a +12V single supply (V− = 0V). The absolute maximum analog voltage at S or D terminals is limited to (V− − 2V) to (V+ + 2V), per Absolute Maximum Ratings. This range ensures compatibility with industrial sensor outputs and legacy audio line levels without external level shifting.

Does the DG442EEE require external protection diodes for overvoltage conditions?

The DG442EEE includes internal clamping diodes on S, D, and IN pins, but external series diodes are recommended if supply sequencing cannot be guaranteed - especially when V+ is not powered first. Adding external diodes reduces the usable analog range by ~1V but preserves low r_DS(ON) and leakage performance. The DG442EEE datasheet provides Figure 1 for implementation guidance.

Is the exposed pad (EP) on the DG442EEE package electrically functional?

Yes - the exposed pad (EP) on the DG442EEE Thin QFN package must be connected to V+, as stated in the Pin Description table. It is not optional: EP serves as a low-inductance substrate connection and improves thermal dissipation. However, it must not be the sole V+ connection; a dedicated bond wire or trace to V+ is still required per datasheet Note.

How does the DG442EEE differ from the DG441EEE in functionality?

The DG442EEE implements four normally-open (NO) SPST switches, meaning each channel conducts only when its INx input is logic high. In contrast, the DG441EEE is normally-closed (NC): channels conduct when INx is logic low. Both share identical electrical specs (r_DS(ON), leakage, charge injection), pinout, and package - differing solely in default switch state and logic polarity.

What is the guaranteed on-resistance matching specification for the DG442EEE, and under what conditions does it apply?

The DG442EEE guarantees ≤4Ω on-resistance matching (Δr_DS(ON)) between any two channels, but this specification is valid only under bipolar supply operation (e.g., ±15V). It is not guaranteed for single-supply configurations. Matching is measured at TA = TMIN to TMAX with VD = ±5V and IS = −10mA, ensuring predictable performance in multi-channel gain-setting or calibration circuits.