Vishay Siliconix DG441DY-E3

Overview

DG441DY-E3 from Vishay Siliconix is a quad SPST normally-closed (NC) analog switch IC designed for precision signal routing in instrumentation and data acquisition systems. It delivers 50 Ω typical on-resistance, 150 ns typical turn-on time, ±15 V dual-supply operation, and –1 pC charge injection - enabling low-distortion switching of audio, sensor, and sample-and-hold signals.

For engineers reviewing the DG441DY-E3 datasheet, DG441DY-E3 pinout, DG441DY-E3 application, or DG441DY-E3 equivalent, key selection criteria include its NC configuration, SOIC-16 package compatibility, low leakage (<0.5 nA off-state), single/dual supply flexibility (5–36 V unipolar / ±5–±22 V bipolar), and proven upgrade path from legacy DG201A sockets.

Technical Context

The DG441DY-E3 implements four independent bidirectional analog switches fabricated on Vishay's high-voltage silicon-gate process, with epitaxial layer latchup protection. Each channel supports rail-to-rail analog signal swing (±15 V) and exhibits matched on-resistance (≤5 Ω max mismatch) across temperature.

Its TTL/CMOS-compatible digital inputs accept logic thresholds of ≤0.8 V (low) and ≥2.4 V (high), and internal level-shifting enables reliable operation with single 12 V or dual ±15 V supplies - critical for mixed-signal test equipment and medical front-end designs requiring minimal pedestal error.

Key Specifications

Pinout & Package

Package: 16-pin narrow SOIC (JEDEC MS-012), 3.9 mm width, 1.27 mm pitch, body dimensions 9.9 mm × 3.9 mm × 1.45 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG441BRZ, the DG441DY-E3 uniquely combines NC default state, –1 pC charge injection, and proven DG201A socket compatibility - making it optimal for retrofitting legacy test equipment and medical systems where fail-safe closure and minimal pedestal error are mandatory.

Availability

DG441DY-E3 is available at Aetrix Electronics and suitable for audio switching, data acquisition, and sample-and-hold circuitry requiring stable component supply, long-term obsolescence management, and traceable sourcing for medical and industrial OEM programs.

Supply support for DG441DY-E3 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

Vishay Siliconix is a global leader in discrete semiconductors and passive components, specializing in high-reliability analog solutions for industrial, automotive, and medical markets.

The DG441DY-E3 belongs to Vishay's precision analog switch product line, engineered specifically for low-error signal routing in instrumentation-grade data acquisition, medical diagnostics, and automated test equipment where rail-to-rail switching and minimal charge injection are critical.

FAQ

What is the default switch state of DG441DY-E3 when power is applied?

The DG441DY-E3 is a normally closed (NC) device: all four switches are closed (conducting) when digital control inputs IN1–IN4 are at logic low (≤0.8 V). This fail-safe behavior ensures signal continuity during power-up, reset, or controller initialization - a key requirement in medical and test equipment where open-circuit faults must be avoided. DG441DY-E3 maintains this NC state until an active-high control signal opens the channel.

Can DG441DY-E3 operate from a single 12 V supply?

Yes, DG441DY-E3 supports true single-supply operation from 5 V to 36 V. With V+ = 12 V and V− tied to GND, it delivers 100 Ω typical on-resistance and 300 ns typical turn-on time while maintaining full analog signal range from 0 V to 12 V. This capability enables direct integration into battery-powered portable instruments and industrial controllers without dual-rail generation - confirmed in Vishay's S11-1066 Rev. J specifications table for single-supply conditions.

How does DG441DY-E3 minimize errors in sample-and-hold circuits?

DG441DY-E3 minimizes sample-and-hold errors primarily through ultra-low charge injection (–1 pC typ.) and low on-resistance mismatch (≤5 Ω max). When the switch opens at the sampling instant, injected charge onto the hold capacitor causes a voltage step; –1 pC limits this error to under 10 µV on standard 100 pF–1 nF hold capacitors. Combined with matched R_DS(on), DG441DY-E3 ensures consistent settling and minimal pedestal shift across repeated acquisition cycles.

Is DG441DY-E3 pin-compatible with DG201A sockets?

Yes, DG441DY-E3 is explicitly designed as a performance upgrade for DG201A/DG202 sockets. Its SOIC-16 footprint matches the industry-standard 16-pin narrow SOIC outline (JEDEC MS-012), and pin functions align directly: IN1–IN4, S1–S4, D1–D4, V+, V−, GND, and NC pins map identically. No PCB layout changes are required - only firmware logic inversion may be needed since DG441DY-E3 uses active-low control versus DG201A's active-high.

What is the maximum allowable analog signal voltage beyond the supply rails for DG441DY-E3?

DG441DY-E3 includes internal clamping diodes that limit analog signals on Sx or Dx terminals to within 2 V beyond V+ or V− (i.e., V− − 2 V to V+ + 2 V). However, forward diode current must be limited to ≤30 mA per terminal to avoid damage. For signals exceeding this range - such as ±20 V transducer outputs - external series resistors or dedicated overvoltage protection ICs are required. This clamping behavior is documented in Note "a" of the Absolute Maximum Ratings table in Vishay's S11-1066 Rev. J datasheet.