Analog Devices Inc./Maxim Integrated DG302AAK/883B

Overview

DG302AAK/883B from Maxim Integrated is a dual DPST (double-pole, double-throw) CMOS analog switch designed for precision signal routing in high-reliability systems. It features <50Ω on-resistance, ±15V analog signal range, break-before-make switching, and operates across -55°C to +125°C. Used in telemetry multiplexing and power-supply sequencing where latchup immunity and low charge injection (<12pC) are critical.

For engineers reviewing the DG302AAK/883B datasheet, DG302AAK/883B pinout, DG302AAK/883B application, or DG302AAK/883B equivalent, key selection criteria include dual DPST topology, MIL-PRF-38535 Class B qualification, 10-lead metal-can hermetic package, and compatibility with ±5V to ±18V dual supplies or +10V to +30V single supply (V− = GND).

Technical Context

The DG302AAK/883B implements two independent SPDT switches configured as a DPST structure, each with TTL/CMOS-compatible control inputs (IN1, IN2) and fully isolated signal paths (S1/D1/S2/D2). Its monolithic CMOS construction ensures latchup-proof operation and supports rail-to-rail analog signals from V− to V+.

Break-before-make timing (50ns minimum) prevents transient short-circuits during state transitions, while low charge injection (12pC typical at ±15V) minimizes voltage glitches in sample-and-hold circuits. The device draws only 0.5mA positive supply current and <0.001µA negative supply current under static conditions.

Key Specifications

Pinout & Package

Package: 10-lead metal can (hermetic), with V+ connected to substrate/case for shielding and thermal conduction.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual DPST analog switch applications.

Compared with DG302AAK/883B, ADG202AKRZ offers lower cost and smaller footprint but sacrifices dual-supply flexibility and radiation-hardened reliability, while HI-508AJ provides higher channel count at the expense of guaranteed break-before-make timing and military temperature range compliance.

Availability

DG302AAK/883B is available at Aetrix Electronics and suitable for telemetry multiplexing, power-supply sequencing, and programmable gain amplifier designs requiring stable component supply across extended temperature and radiation environments.

Supply support for DG302AAK/883B 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 high-reliability semiconductor solutions for aerospace, industrial, and medical markets.

The DG302AAK/883B belongs to the DG300A family of TTL-compatible CMOS analog switches engineered for high-integrity signal routing in mission-critical systems where latchup immunity, low leakage, and military-grade environmental resilience are mandatory.

FAQ

What is the maximum allowable analog signal voltage range for DG302AAK/883B?

The DG302AAK/883B supports an analog signal range from V− to V+, which spans ±15V under standard ±15V supply conditions. When operated with ±18V supplies, the absolute maximum analog signal range extends to ±18V, as confirmed by the Absolute Maximum Ratings table specifying V+ up to 44V for DG300A–DG303A devices and analog signal clamping diodes rated for ±4V beyond supply rails.

Does DG302AAK/883B support single-supply operation, and how is it configured?

Yes, DG302AAK/883B supports single-supply operation by connecting the V− pin to GND and applying a positive voltage (between +10V and +30V) to V+. In this configuration, the analog signal range becomes 0V to V+, enabling compatibility with microcontroller-based systems lacking negative rails. Table 1 in the datasheet confirms functional operation at +10V, +15V, +20V, and +30V single supplies with verified switching times and on-resistance values.

What is the significance of the "883B" suffix in DG302AAK/883B?

The "883B" suffix indicates that DG302AAK/883B is processed and tested to MIL-PRF-38535 Class B requirements, including rigorous screening for burn-in, temperature cycling, and hermeticity. This qualification ensures suitability for high-reliability applications such as aerospace, defense, and downhole instrumentation where long-term stability and failure rate predictability are mandated.

How does the break-before-make feature function in DG302AAK/883B, and what is its timing specification?

The DG302AAK/883B guarantees break-before-make operation with a minimum interval of 50ns between turn-off of one switch and turn-on of the other within each DPST pair. This timing is measured under the test conditions defined in Figure 2 of the datasheet using ±15V supplies and is specified for DG301(A)/DG303(A) variants - and explicitly extended to DG302(A) in the Pin Configurations section and General Description text stating "DG300–DG303 and DG300A–DG303A families are electrically compatible and pin compatible".

Can DG302AAK/883B be used in battery-powered portable instruments, and what power consumption metrics support this?

Yes, DG302AAK/883B is optimized for battery-powered portable instruments, drawing only 0.5mA of positive supply current and less than 0.001µA of negative supply current under static conditions. Its low on-resistance (<50Ω) minimizes I²R losses during signal conduction, while fast switching (150ns t_ON) reduces active power dissipation - collectively extending operational life in handheld test equipment and field-deployed sensors.