Analog Devices Inc./Maxim Integrated DG406CWI

Overview

DG406CWI from Maxim Integrated is a 16-channel single-ended CMOS analog multiplexer with guaranteed 100Ω max on-resistance, 8Ω max channel-to-channel on-resistance matching, and 15pC max charge injection. It operates from +5V to +30V single supply or ±4.5V to ±20V dual supplies and is used in precision data-acquisition systems requiring rail-to-rail signal handling and low leakage.

For engineers reviewing the DG406CWI datasheet, DG406CWI pinout, DG406CWI application, or DG406CWI equivalent, key selection criteria include on-resistance flatness (9Ω max), input off-leakage (<5nA at +85°C), ESD protection (>2000V per MIL-STD 883 Method 3015.7), and TTL/CMOS-compatible digital control.

Technical Context

The DG406CWI implements a CMOS transmission-gate architecture with four address inputs (A0–A3) and an active-low enable (EN) to select one of 16 bidirectional analog channels (S1–S16) to connect to the common D terminal. Its rail-to-rail analog signal range supports ±10V operation under ±15V supplies.

Guaranteed performance includes matched on-resistance across all channels (ΔR_DS(ON) ≤ 8Ω), flat on-resistance over the full analog range (R_FLAT ≤ 9Ω), and low charge injection (≤15pC) critical for sample-and-hold accuracy. Input leakage remains below 5nA at +85°C, enabling stable operation in industrial temperature environments.

Key Specifications

Pinout & Package

DG406CWI is housed in a 28-pin wide SOIC (SO) package with 300 mil body width, RoHS-compliant and lead-free. Pin layout follows industry-standard 16-channel mux configuration with dedicated address, enable, analog I/O, and dual-supply terminals.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG406BRZ and MAX4617CSE+, the DG406CWI uniquely delivers guaranteed channel matching (8Ω), flatness (9Ω), and dual-supply operation - making it the preferred choice for high-fidelity, temperature-stable multiplexing in data-acquisition and control systems.

Availability

DG406CWI is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and guidance and control systems requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across temperature.

Supply support for DG406CWI 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 and mixed-signal ICs for industrial, communications, and computing applications.

The DG406CWI belongs to Maxim's precision analog multiplexer product line, engineered for applications demanding low distortion, guaranteed matching, and robust operation across extended temperature and supply ranges.

FAQ

What is the operating temperature range of the DG406CWI?

The DG406CWI is rated for 0°C to +70°C operation. This commercial-grade temperature range is validated across all key parameters including on-resistance, leakage, and switching time. The device uses the same die as wider-temperature variants (e.g., DG406EWI+), but its specifications are fully guaranteed only within this range - making it ideal for cost-sensitive industrial and instrumentation applications where ambient conditions remain controlled.

Does the DG406CWI support dual-supply operation?

Yes, the DG406CWI supports dual-supply operation from ±4.5V to ±20V. When using dual supplies, V+ connects to the positive rail and V− to the negative rail, enabling true bipolar analog signal handling from V− to V+. The device also operates from a single +5V to +30V supply (with V− tied to GND). Both configurations maintain full specification compliance, including 100Ω max on-resistance and <5nA leakage at +85°C.

Is the DG406CWI pin-compatible with older DG406 versions?

Yes, the DG406CWI is a pin-compatible plug-in upgrade for the original industry-standard DG406. All 28 pins retain identical functions, electrical behavior, and physical layout - including A0–A3, EN, S1–S16, D, V+, V−, GND, and N.C. pins. No PCB redesign or firmware modification is required to adopt the DG406CWI, which improves upon the legacy part with guaranteed matching (8Ω), flatness (9Ω), and lower charge injection (15pC).

What is the maximum analog signal range supported by the DG406CWI?

The DG406CWI supports rail-to-rail analog signals from V− to V+. Under ±15V dual supplies, this yields a ±15V range; under +12V single supply (V− = GND), it supports 0V to +12V. The absolute maximum analog voltage is limited by the supply rails - signals must stay within (V− − 0.3V) to (V+ + 0.3V) to avoid damage. Internal clamping diodes protect against transient overvoltage, but sustained operation outside the supply rails risks latch-up or degradation.

How does the DG406CWI handle charge injection in sample-and-hold applications?

The DG406CWI guarantees ≤15pC maximum charge injection - a critical parameter for sample-and-hold accuracy. During channel switching, injected charge causes voltage step errors on the hold capacitor; with a 1nF capacitor, 15pC injection results in only 15mV error. This value is tested and guaranteed across temperature and supply conditions, enabling predictable settling behavior and minimizing calibration overhead in precision data-acquisition systems using the DG406CWI.