Analog Devices Inc./Maxim Integrated DG441CJ

Overview

DG441CJ from Maxim Integrated is a quad, normally-closed (NC), single-pole/single-throw (SPST) analog switch IC designed for precision signal routing in rail-to-rail, 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 operates from ±4.5V to ±20V or +10V to +30V supplies - ideal for test equipment and audio-signal routing where channel uniformity and low signal distortion are critical.

For engineers reviewing the DG441CJ datasheet, DG441CJ pinout, DG441CJ application, or DG441CJ equivalent, key selection criteria include guaranteed r_DS(ON) flatness (9Ω max), TTL/CMOS logic compatibility, ESD tolerance (2000V min), dual- or single-supply flexibility, and NC switching behavior confirmed for all four channels.

Technical Context

The DG441CJ implements four independent SPST switches with normally-closed topology, each featuring matched silicon-gate construction on a 44V process. Its internal architecture ensures symmetrical conduction (bidirectional signal flow), rail-to-rail analog voltage handling (±15.5V with ±16.5V supplies), and logic-controlled inversion: logic low enables conduction, logic high disables it.

Switching performance is defined by sub-250ns t_ON and sub-170ns t_OFF under ±15V conditions, while leakage and charge injection are tightly controlled across temperature - with off-leakage <5nA at +85°C and charge injection ≤10pC - enabling stable operation in sample-and-hold and battery-operated systems.

Key Specifications

Pinout & Package

Package: 16-pin plastic DIP (dual in-line package), through-hole mount, 0°C to +70°C operating range.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG441BRZ and TS5A4624DCKR, the DG441CJ uniquely supports bipolar ±20V operation, offers DIP packaging for prototyping, and guarantees r_DS(ON) matching and flatness - making it the preferred choice for industrial test and legacy analog systems requiring robust, wide-supply-range switching.

Availability

DG441CJ is available at Aetrix Electronics and suitable for test equipment, audio-signal routing, and sample-and-hold circuits requiring stable component supply, long-lifecycle availability, and through-hole assembly compatibility.

Supply support for DG441CJ 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 DG441CJ belongs to Maxim's precision analog switch product line, engineered for applications demanding low distortion, tight channel matching, and reliable operation across wide supply and temperature ranges.

FAQ

What is the logic polarity of the DG441CJ?

The DG441CJ features active-low logic control: a logic low (≤0.8V) on IN1–IN4 closes the corresponding normally-closed switch, while a logic high (≥2.4V) opens it. This inverted logic sense is inherent to the DG441 family and differs from the DG442's active-high behavior. The DG441CJ's truth table confirms NC operation - no external pull-up or inversion circuitry is needed when interfacing with standard microcontrollers.

Does the DG441CJ support single-supply operation?

Yes, the DG441CJ supports single-supply operation from +10V to +30V. In this mode, V− must be connected to ground (0V), and the analog signal range becomes 0V to V+. The device maintains its specified r_DS(ON), leakage, and switching performance under these conditions, as confirmed in the "Electrical Characteristics-Single Supply" section of the datasheet. DG441CJ is fully functional without negative supply rails.

What is the maximum analog signal voltage the DG441CJ can handle?

The DG441CJ supports rail-to-rail analog signals from V− to V+, with absolute maximum ratings of (V− − 2V) to (V+ + 2V) on S and D pins. Under recommended operating conditions (e.g., V+ = +15V, V− = −15V), the guaranteed analog signal range is ±15.5V. Exceeding V+ or V− triggers internal clamping diodes - so the practical maximum undistorted signal swing is bounded by the supply rails, not external limits.

Is the DG441CJ pin-compatible with older DG441 variants?

Yes, the DG441CJ is pin-compatible with other DG441 variants in the same 16-pin DIP package (e.g., DG441DJ, DG441DK), sharing identical pinout, footprint, and logic interface. Differences are limited to temperature grade (0°C to +70°C for DG441CJ) and internal process enhancements - including improved r_DS(ON) matching and lower off-leakage - with no layout or schematic changes required for drop-in replacement in existing designs.

How does the exposed pad apply to the DG441CJ?

The DG441CJ uses a standard plastic DIP package and does not feature an exposed pad. Exposed pad (EP) is exclusive to the Thin QFN-EP variants (e.g., DG441ETE), where EP must be connected to V+ for thermal and electrical performance. For DG441CJ, thermal management relies on standard DIP PCB copper area and ambient airflow; no special pad connection or grounding is required.