Analog Devices Inc./Maxim Integrated DG506ACWI

Overview

DG506ACWI from Maxim Integrated is a monolithic CMOS 16-channel analog multiplexer (1-of-16) with break-before-make switching, ±4.5V to ±18V dual-supply operation, 270Ω typical on-resistance at ±15V, and TTL/CMOS-compatible logic inputs. It routes analog signals in data acquisition systems where low leakage (<±1nA off-leakage), symmetrical bidirectional signal flow, and latch-up immunity are required.

For engineers reviewing the DG506ACWI datasheet, DG506ACWI pinout, DG506ACWI application, or DG506ACWI equivalent, this device is evaluated for precision analog signal routing in industrial control, aircraft HUDs, and portable instrumentation-where supply flexibility, channel isolation (>68dB), and wide temperature stability (0°C to +70°C) are critical selection criteria.

Technical Context

The DG506ACWI implements a fully decoded 4-bit address decoder driving 16 independent analog switches, each featuring symmetrical bidirectional conduction and guaranteed break-before-make timing (0.2µs). Its CMOS construction ensures rail-to-rail analog signal handling within ±15V limits and zero-current enable control.

It operates with dual supplies only (V+ and V−), requires no external biasing, and maintains consistent on-resistance matching (≤6% max variation between channels) across its full operating range. Logic inputs tolerate voltages up to V+ + 2V and support direct interface with microcontrollers without level-shifting.

Key Specifications

Pinout & Package

Package: 28-pin Wide SO (SOIC-W), RoHS-compliant, body width 7.5mm, thermal resistance θ_JA = 12.5°C/mW above +70°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with HI506CD and DG506AK, the DG506ACWI offers lower power consumption, SOIC-W packaging for compact layouts, and optimized performance for commercial-grade portable and industrial systems-without sacrificing pin compatibility or functional equivalence.

Availability

DG506ACWI is available at Aetrix Electronics and suitable for industrial data acquisition, aircraft HUD subsystems, and portable instrumentation requiring stable component supply, RoHS compliance, and lead-free assembly support.

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) designs precision analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.

The DG506ACWI belongs to Maxim's legacy analog multiplexer product line, engineered specifically for high-fidelity, low-leakage analog signal routing in systems requiring rail-to-rail operation and robust supply sequencing tolerance.

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. This rail-to-rail capability is specified across its full operating temperature range (0°C to +70°C) and applies to both input and output terminals. The device remains functional with supply voltages as low as ±4.5V, though analog range scales accordingly. Absolute maximum ratings limit V+ to 44V and V− to −44V relative to GND, but sustained operation beyond ±18V violates recommended conditions. DG506ACWI must never be subjected to analog signals exceeding its supply rails without external clamping.

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 on A0–A3 or EN pins. Its TTL/CMOS-compatible inputs have defined thresholds (0.8V low, 2.4V high) and internally biased input structures that ensure valid logic states without external biasing. However, in noisy environments or when inputs float during power-up, adding 10kΩ pull-downs to A0–A3 and EN is recommended to prevent unintended channel selection. DG506ACWI's input leakage is extremely low (±30fA typical), so external resistors do not affect switching performance.

Can the DG506ACWI be used with single-supply operation?

No, the DG506ACWI requires dual supplies (V+ and V−) and cannot operate on a single-ended supply. Its architecture depends on symmetric positive and negative rails to bias internal CMOS transmission gates and achieve rail-to-rail analog conduction. Attempting single-supply operation (e.g., V+ = +15V, V− = GND) violates the absolute maximum rating for GND (25V) and will cause malfunction or damage. For single-supply applications, consider alternatives such as the MAX306 or ADG506A, which are explicitly designed for 3V–20V unipolar operation. DG506ACWI must always be powered with properly decoupled ±V supplies.

What is the purpose of the break-before-make feature in the DG506ACWI, and how is it implemented?

The break-before-make feature in the DG506ACWI guarantees a minimum 0.2µs interval where all switches are open during address transitions, preventing momentary short-circuits between selected channels. This is implemented via internal timing circuitry that delays activation of the newly addressed switch until the previously active switch is fully turned off. The specification is tested under worst-case conditions (V+ = 15V, V− = −15V, TA = +25°C) and ensures safe operation in multiplexed sensor arrays or relay-driving circuits where channel cross-conduction could damage downstream circuitry. DG506ACWI's t_OPEN parameter is guaranteed-not typical-so no derating is needed for design margin.

How does the DG506ACWI compare to the DG507A in terms of pin compatibility and functionality?

The DG506ACWI and DG507A share identical 28-pin Wide SO packaging and pinout, but differ functionally: DG506ACWI is a 16-channel single-ended multiplexer (1-of-16), while DG507A is an 8-channel differential multiplexer (2-of-16) with paired Sxa/Sxb outputs. Though pin-compatible, they are not interchangeable-their address decoding, truth tables, and internal switch matrices are distinct. Using DG507A in place of DG506ACWI would result in incorrect channel mapping and missing outputs. DG506ACWI's S1–S16 pins map directly to individual channels; DG507A's S1a–S8a and S1b–S8b serve complementary differential pairs. Always verify the exact part number's function before substitution.