Analog Devices Inc./Maxim Integrated DG403DY+

Overview

DG403DY+ from Maxim Integrated is a dual, single-pole/double-throw (SPDT) high-speed analog switch with two normally open and two normally closed channels. It features 20Ω typical on-resistance, 2Ω maximum on-resistance matching between channels, 3Ω maximum on-resistance flatness over ±15V signal range, and 15pC maximum charge injection. It operates from ±4.5V to ±20V bipolar or +10V to +30V single supply and is used in precision sample-and-hold circuits and military radio signal routing.

For engineers reviewing the DG403DY+ datasheet, DG403DY+ pinout, DG403DY+ application, or DG403DY+ equivalent, this page delivers verified electrical parameters, truth-table–validated switching behavior, rail-to-rail analog handling up to ±15.5V, TTL/CMOS-compatible logic control, and thermal leakage performance validated to +85°C.

Technical Context

The DG403DY+ implements a silicon-gate CMOS architecture with substrate tied to V+, enabling robust rail-to-rail analog conduction and guaranteed break-before-make timing of 10–20ns. Its dual SPDT topology supports independent channel control via IN1/IN2 inputs, each driving one NO/NC pair with complementary logic sense.

It guarantees low off-leakage (<5nA at +85°C), low dynamic power (35µW max), and stable rDS(ON) across temperature (0.5%/°C typical TC). Signal integrity is preserved by 72dB off-isolation and 90dB crosstalk suppression at 1MHz, with 12pF off-capacitance per drain/source terminal.

Key Specifications

Pinout & Package

DG403DY+ is housed in a 16-pin plastic DIP package (0.300" wide), rated for –40°C to +85°C operation. Pin functions are electrically validated per Maxim's official pin description table and functional diagrams.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG403BRZ and TS5A3157DCKR, DG403DY+ uniquely combines ±20V bipolar operation, guaranteed 3Ω rFLAT(ON), and <5nA off-leakage at +85°C-making it irreplaceable in military-grade sample-and-hold and high-fidelity test equipment where signal fidelity and thermal stability are non-negotiable.

Availability

DG403DY+ is available at Aetrix Electronics and suitable for military radios, heads-up displays, sample-and-hold circuits, and high-reliability test equipment requiring stable component supply across extended temperature and voltage ranges.

Supply support for DG403DY+ 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 demanding industrial, automotive, and defense applications.

The DG403DY+ belongs to Maxim's legacy DG40x family of high-speed analog switches, engineered specifically for rail-to-rail signal routing in military, aerospace, and automated test systems where leakage, flatness, and charge injection are critical.

FAQ

What is the maximum analog signal voltage range supported by DG403DY+?

DG403DY+ supports analog signals from V− to V+, with absolute maximum ratings allowing V+ − V− ≤ 44V. When operated with ±15V supplies, it reliably handles ±15.5V signals-enabling true rail-to-rail switching without clipping or distortion in high-fidelity applications.

Does DG403DY+ require separate logic and analog supplies?

Yes-DG403DY+ uses dedicated VL (logic supply) and V+/V− (analog supplies). VL must be +5V for TTL compatibility or tied to V+ for CMOS-level operation. This separation ensures noise isolation and stable logic thresholds regardless of analog rail conditions.

How does DG403DY+ achieve break-before-make switching?

DG403DY+ guarantees 10–20ns break-before-make delay between its SPDT pairs, preventing signal shorting during state transitions. This is achieved through internal timing control circuitry and is validated across temperature and supply conditions per Maxim's truth table and Figure 3 test circuit.

Can DG403DY+ operate from a single +12V supply?

Yes-DG403DY+ supports single-supply operation from +10V to +30V. With +12V on V+ and GND on V−, it switches analog signals from 0V to +12V. However, VL must remain at +5V for TTL compatibility, requiring a local LDO or regulator.

What is the thermal performance of DG403DY+ leakage current?

DG403DY+ guarantees source- and drain-off leakage currents below 5nA at +85°C-verified 100% at hot temperature and correlated at +25°C. This performance is enabled by Maxim's 44V silicon-gate process and substrate tie to V+, ensuring stability in military and avionics thermal environments.