Vishay Siliconix DG441LEDY-GE3

Overview

DG441LEDY-GE3 from Vishay Siliconix is a quad single-pole-single-throw (SPST) analog switch with normally closed (NC) configuration, designed for precision signal routing in data acquisition and sample-and-hold circuits. It delivers 16 Ω typical on-resistance, 18 ns typical turn-on time, <10 pA typical leakage, and operates from 3 V to 16 V single supply or ±3 V to ±8 V dual supply.

For engineers reviewing the DG441LEDY-GE3 datasheet, DG441LEDY-GE3 pinout, DG441LEDY-GE3 application, or DG441LEDY-GE3 equivalent, this device is selected for low-charge-injection (<8 pC), low-capacitance (CD(ON) = 15 pF), and bidirectional conduction in instrumentation-grade analog front-ends requiring minimal signal distortion and fast settling.

Technical Context

The DG441LEDY-GE3 implements a monolithic CMOS analog switch architecture with four independent NC channels, each featuring matched RDS(on) (≤0.5 Ω mismatch) and symmetrical conduction in both directions when enabled. Its logic interface accepts TTL/CMOS-compatible inputs (VIH ≥ 2.4 V, VIL ≤ 0.8 V) across full supply ranges.

Internal protection diodes clamp analog signals exceeding V+ or V−, limiting forward current per absolute maximum ratings. The device maintains stable performance over −40 °C to +85 °C, with guaranteed leakage <10 nA and off-isolation >68 dB at 1 MHz under specified test conditions.

Key Specifications

Pinout & Package

Package: 16-pin narrow-body SOIC (SO-16, JEDEC MS-012), body dimensions 9.80–10.00 mm × 3.80–4.00 mm, lead pitch 1.27 mm.

Key Features

Applications

Equivalent & Alternatives

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

Compared with DG441LEDY-GE3, MAX4617ESE+ trades speed and leakage for lower unit cost in non-critical switching, while ADG1412BRUZ improves conduction loss at the expense of charge-induced settling error and removes the normally closed safety feature essential in medical and ATE fault-mitigation designs.

Availability

DG441LEDY-GE3 is available at Aetrix Electronics and suitable for automatic test equipment, medical instrumentation, and data acquisition systems requiring stable component supply with RoHS-compliant lead-free termination and traceable lot history.

Supply support for DG441LEDY-GE3 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 semiconductor manufacturer specializing in discrete components and analog ICs, with expertise in high-reliability switching, power management, and precision signal conditioning.

The DG441LEDY-GE3 belongs to Vishay's high-performance analog switch product line, engineered for instrumentation, medical, and industrial applications demanding low distortion, fast settling, and robust overvoltage tolerance.

FAQ

What is the default state of DG441LEDY-GE3 when power is applied?

The DG441LEDY-GE3 is a normally closed (NC) quad SPST switch: all four channels conduct by default when no logic signal is applied to IN1–IN4. Applying logic high (≥2.4 V) to any INx pin opens the corresponding channel. This fail-safe behavior ensures signal continuity during MCU boot-up or control signal loss, making DG441LEDY-GE3 ideal for safety-critical analog paths in medical and test equipment.

Can DG441LEDY-GE3 operate from a single 3.3 V supply?

Yes, DG441LEDY-GE3 supports single-supply operation from 3 V to 16 V. At 3.3 V, RDS(on) increases to 71 Ω (typ.), tON extends to 141 ns (typ.), and charge injection drops to 2 pC (typ.). These values remain within specification limits for low-speed, low-voltage applications such as battery-powered sensor nodes, provided analog signal swing stays within 0–3.3 V and leakage-critical timing budgets allow for longer settling.

How does DG441LEDY-GE3 handle analog signals exceeding the supply rails?

DG441LEDY-GE3 includes internal clamping diodes between each Sx/Dx pin and V+/V−. Signals exceeding V+ or falling below V− forward-bias these diodes, limiting excursion to approximately V+ + 0.3 V or V− − 0.3 V. Users must externally limit diode current to ≤30 mA continuous or 100 mA pulsed (1 ms, 10% duty) to prevent damage - typically achieved with series resistors in high-energy signal paths.

Is DG441LEDY-GE3 pin-compatible with DG441LEDQ-GE3?

Yes, DG441LEDY-GE3 (SOIC-16) and DG441LEDQ-GE3 (TSSOP-16) share identical pin functions and logic behavior, but differ in package footprint and thermal characteristics. The SOIC version offers higher power dissipation (650 mW vs. 450 mW) and larger pad spacing, while the TSSOP variant enables denser layouts. No schematic changes are needed, but PCB layout and reflow profiles must match the respective package requirements.

What is the maximum analog signal frequency supported by DG441LEDY-GE3?

DG441LEDY-GE3 has a −3 dB bandwidth of 301 MHz (measured at V+ = 3 V, V− = 0 V). However, usable signal fidelity depends on application-specific constraints: off-isolation degrades above 10 MHz, and crosstalk exceeds −60 dB beyond 100 MHz. For precision DC-coupled applications like data acquisition, the effective small-signal bandwidth is governed by RDS(on) and CD(ON) - yielding ~10 MHz for 1 kΩ source impedance - not the large-signal switching spec.