Analog Devices Inc./Maxim Integrated DG406DN-T

Overview

DG406DN-T 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 ±4.5V to ±20V dual supplies or +5V to +30V single supply and is used in precision data-acquisition systems requiring rail-to-rail signal handling and low leakage.

For engineers reviewing the DG406DN-T datasheet, DG406DN-T pinout, DG406DN-T application, or DG406DN-T equivalent, key selection criteria include on-resistance flatness (9Ω max), input off-leakage (<5nA at +85°C), ESD protection (>2000V), TTL/CMOS-compatible digital control, and PLCC-28 packaging for industrial temperature operation (-40°C to +85°C).

Technical Context

The DG406DN-T implements a CMOS transmission-gate architecture with bidirectional analog signal routing through a 4-bit binary address decoder (A0–A3) and active-low enable (EN). Its switch array supports rail-to-rail analog signals up to ±20V and maintains consistent on-resistance across the full signal range due to matched P- and N-channel device sizing.

Guaranteed performance includes 100Ω max R_DS(ON), 9Ω max on-resistance flatness over ±10V analog range, and <5nA input off-leakage at +85°C - all validated under dual-supply (±15V) and single-supply (+12V) conditions per MIL-STD-883 Method 3015.7 ESD testing.

Key Specifications

Pinout & Package

DG406DN-T is housed in a 28-lead PLCC (Plastic Leaded Chip Carrier) package with gull-wing leads, RoHS-compliant, rated for -40°C to +85°C operation. The package provides mechanical stability for automated assembly and thermal performance suitable for industrial environments.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG406BRZ and MAX4617CSE+, DG406DN-T offers superior channel matching (8Ω vs. 15Ω/25Ω), lower leakage at temperature, and PLCC packaging for thermal and mechanical robustness in industrial deployments - making it optimal for high-accuracy, wide-supply-range applications.

Availability

DG406DN-T is available at Aetrix Electronics and suitable for data-acquisition systems, test equipment, and guidance and control systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for DG406DN-T 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, automotive, and communications markets, with emphasis on precision, reliability, and integration.

The DG406DN-T belongs to Maxim's high-precision analog multiplexer product line, engineered specifically for applications demanding low distortion, guaranteed matching, and robust operation in noisy or thermally variable environments.

FAQ

What is the maximum allowable analog signal range for DG406DN-T when operated from ±15V supplies?

The DG406DN-T supports an analog signal range of ±10V when operated from ±15V dual supplies. This is specified in the Electrical Characteristics table under "Analog Signal Range" with V+ = +15V and V- = -15V. Operation beyond this range risks increased on-resistance variation and potential damage if absolute maximum ratings are exceeded. The DG406DN-T maintains rail-to-rail capability within these bounds, enabling direct interfacing with ±10V industrial sensors and DACs without external level-shifting circuitry.

Does DG406DN-T require external pull-up resistors on its address or enable pins?

No, DG406DN-T does not require external pull-up resistors on A0–A3 or EN pins. Its digital inputs are TTL/CMOS-compatible with defined logic thresholds (VAL ≤ 0.8V for low, VAH ≥ 2.4V for high) and exhibit low input current (±1.0µA max). Internal input structures provide sufficient noise immunity for direct microcontroller GPIO connection. External pull-ups may be added only for fail-safe default state assurance in safety-critical systems, but they are not functionally necessary for normal operation of DG406DN-T.

Can DG406DN-T be used with unbalanced supplies such as +24V and -5V?

Yes, DG406DN-T supports unbalanced supplies including +24V and -5V, as explicitly stated in the Applications Information section. The device operates with any combination where V+ − V− ≤ +44V and each supply remains within its absolute maximum rating (V+ ≤ +44V referenced to V-, GND ≤ +25V). In this configuration, the analog signal range becomes limited to V- to V+, i.e., -5V to +24V, and on-resistance flatness remains guaranteed per datasheet specifications. This flexibility makes DG406DN-T suitable for legacy industrial systems with nonstandard supply rails.

What is the thermal resistance (θ_JA) of the DG406DN-T in its PLCC-28 package?

The DG406DN-T in PLCC-28 has a thermal resistance θ_JA of 100°C/W, derived from its specified derating factor of 10.53mW/°C above +70°C and maximum power dissipation of 842mW at TA = +70°C (842mW ÷ 10.53mW/°C = 80°C rise → θ_JA = 80°C ÷ 0.842W ≈ 95°C/W, rounded to 100°C/W per industry convention). This value assumes JEDEC-standard PCB layout (2s2p copper). Actual thermal performance depends on board copper area, airflow, and adjacent heat sources - critical for sustained operation near +85°C ambient in DG406DN-T applications.

How does the charge injection specification of DG406DN-T impact sample-and-hold circuit design?

The DG406DN-T's guaranteed 15pC max charge injection directly determines hold capacitor sizing and settling time in sample-and-hold circuits. For a 1nF hold capacitor, 15pC injection causes a 15mV step error (ΔV = Q/C), requiring additional settling time before ADC sampling. Designers mitigate this by using larger hold capacitors (e.g., 10nF reduces error to 1.5mV) or incorporating correlated double sampling. The DG406DN-T's low and tightly specified charge injection enables predictable error budgeting - unlike generic muxes with 50–100pC typical values - making it suitable for 12-bit+ precision systems where DG406DN-T replaces less-controlled alternatives.