Analog Devices Inc./Maxim Integrated DG506ACWI+

Overview

DG506ACWI+ from Maxim Integrated is a monolithic CMOS 16-channel analog multiplexer (1-of-16) with bidirectional signal routing, ±4.5V to ±18V dual-supply operation, break-before-make switching, and 270Ω typical on-resistance at ±15V. It supports TTL/CMOS-compatible logic inputs and is used in precision data acquisition systems requiring low leakage and rail-to-rail analog signal handling.

For engineers reviewing the DG506ACWI+ datasheet, DG506ACWI+ pinout, DG506ACWI+ application, or DG506ACWI+ equivalent, key selection criteria include its 28-pin wide SOIC package, -55°C to +125°C extended temperature variants, guaranteed latch-up immunity under powered-off signal conditions, and compatibility with legacy IH6116/DG506A/HI506 designs.

Technical Context

The DG506ACWI+ implements a fully symmetrical, bidirectional analog switch matrix controlled by four address lines (A0–A3) and an active-high enable input (EN). Its CMOS architecture ensures matched on-resistance across all 16 channels and maintains analog signal integrity over the full ±15V range without polarity dependence.

Break-before-make timing guarantees >200ns channel isolation during address transitions, preventing momentary shorting between selected inputs. Off-isolation exceeds 68dB at 500kHz, while source/drain off-capacitance remains below 6pF and 45pF respectively - critical for high-frequency multiplexed sampling accuracy.

Key Specifications

Pinout & Package

Package: 28-pin Wide SOIC (W28-5), RoHS-compliant, body width 7.6mm, thermal pad not present.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HI506CD, DG506ACWI+ delivers 33% lower on-resistance and certified latch-up immunity - critical for unpowered-signal survivability. Against DG506ADW+, it trades extended temperature range for lower unit cost and same footprint, simplifying BOM management in ambient-stable systems.

Availability

DG506ACWI+ is available at Aetrix Electronics and suitable for data acquisition systems, control systems, aircraft heads up displays, and signal routing applications requiring stable component supply, long-term manufacturability, and RoHS compliance.

Supply support for DG506ACWI+ 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, automotive, and communications markets.

The DG506ACWI+ belongs to Maxim's precision analog multiplexer product line, designed specifically for high-reliability signal routing in environments where supply sequencing, latch-up immunity, and rail-to-rail analog performance are mission-critical.

FAQ

What is the maximum analog signal voltage range supported by the DG506ACWI+?

The DG506ACWI+ supports an analog signal range of ±15V when operated with ±15V supplies. Its absolute maximum ratings allow V+ up to +44V and V− down to -44V, but functional analog swing is limited to the supply rails. This enables full rail-to-rail operation in standard ±15V industrial systems without signal clipping or distortion.

Does the DG506ACWI+ require external pull-up or pull-down resistors on its address or enable pins?

No, the DG506ACWI+ does not require external pull-up or pull-down resistors. Its address inputs (A0–A3) and enable input (EN) are TTL- and CMOS-compatible with guaranteed logic thresholds (VAL ≤ 0.8V for low, VAH ≥ 2.4V for high) and input currents below ±30nA across temperature - allowing direct connection to microcontroller GPIOs or FPGA outputs without additional biasing components.

How does the break-before-make feature of the DG506ACWI+ improve system reliability?

The DG506ACWI+ guarantees a minimum 200ns break interval between channel deactivation and activation during address changes. This prevents momentary short circuits between two analog sources - a critical safeguard in sensor networks where simultaneous connection could cause measurement errors, ground loops, or damage to upstream signal conditioners. The timing is process- and temperature-compensated across the full operating range.

Can the DG506ACWI+ operate from a single supply, and if so, what are the limitations?

Yes, the DG506ACWI+ can operate from a single supply (e.g., +9V on V+, GND on V−), but the analog signal range becomes 0V to V+ − 3V due to internal CMOS threshold constraints. For true rail-to-rail analog handling, dual supplies (e.g., ±15V) are required. Single-supply operation is viable for unipolar signals like 0–5V sensor outputs, provided the common-mode voltage stays within the device's specified limits.

Is the DG506ACWI+ pin-compatible with the original Intersil IH6116 multiplexer?

Yes, the DG506ACWI+ is a documented drop-in replacement for the Intersil IH6116. It shares identical pinout, electrical specifications (including on-resistance, leakage, and switching speed), and functional behavior - including break-before-make timing and enable logic polarity. No PCB layout changes or firmware modifications are needed when upgrading from IH6116 to DG506ACWI+.