Vishay Siliconix DG411LDY

Overview

DG411LDY from Vishay Siliconix is a precision monolithic quad SPST CMOS analog switch optimized for low-voltage operation (2.7–12 V single supply or ±3–±6 V dual supply), featuring 17 Ω on-resistance, 19 ns turn-on time, and 0.25 nA leakage current. It delivers break-before-make switching action and 2000 V ESD protection, making it suitable for precision data acquisition and audio/video signal routing in battery-powered systems.

For engineers reviewing the DG411LDY datasheet, DG411LDY pinout, DG411LDY application, or DG411LDY equivalent, key selection considerations include its narrow SOIC-16 package, TTL/CMOS-compatible control logic, flat R_DS(on) over signal range, -50 dB off-isolation at 50 MHz, and guaranteed performance across -40 °C to +85 °C.

Technical Context

The DG411LDY implements BiCMOS wafer fabrication to support both single-supply (3–12 V) and dual-supply (±3–±6 V) operation while maintaining low distortion and high dynamic range. Its channel architecture ensures break-before-make switching behavior and minimal charge injection (5 pC typical).

It features integrated level-shifting drive circuitry enabling direct TTL/CMOS logic interfacing with input thresholds of ≤0.8 V (logic low) and ≥2.4 V (logic high), and supports analog signal ranges up to 0–12 V (single supply) or ±5 V (dual supply) without clamping under normal conditions.

Key Specifications

Pinout & Package

Package: 16-pin narrow SOIC (JEDEC MS-012), body dimensions 9.8–10.0 mm × 3.8–4.0 mm, 1.27 mm pitch.

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX4617ESE+ and ADG1411BRUZ, the DG411LDY uniquely balances dual-supply operation, sub-20 ns switching, and 17 Ω on-resistance in a cost-optimized SOIC-16 package-making it the preferred choice for precision, low-power, mixed-supply signal routing where layout space and BOM count are constrained.

Availability

DG411LDY is available at Aetrix Electronics and suitable for precision data acquisition, audio/video signal routing, and battery-powered test equipment requiring stable component supply and long-term production continuity.

Supply support for DG411LDY 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 emphasis on reliability, power efficiency, and high-performance signal conditioning.

The DG411L family was designed specifically for low-voltage, high-fidelity analog switching in portable instrumentation and communications infrastructure-emphasizing low distortion, fast settling, and robust ESD immunity.

FAQ

What supply voltages does the DG411LDY support?

The DG411LDY supports 2.7–12 V single supply or ±3–±6 V dual supply operation. When used with single supply, V− is connected to GND. The VL pin accepts an independent 3–5 V logic supply, allowing clean separation between analog and digital domains. This flexibility makes DG411LDY suitable for mixed-rail systems such as battery-powered data loggers interfacing with both 3.3 V microcontrollers and 12 V sensors.

Is the DG411LDY pin-compatible with the legacy DG411?

Yes, the DG411LDY is explicitly designed as a low-voltage pin-for-pin compatible replacement for the industry-standard DG411, with improved performance including lower on-resistance, faster switching, and enhanced ESD protection. The pinout, footprint, and truth table match exactly-enabling drop-in upgrades in existing SOIC-16 layouts without redesign. However, verify supply rail compatibility, as DG411LDY operates down to 2.7 V while original DG411 requires minimum 5 V.

What is the maximum analog signal voltage the DG411LDY can switch?

The DG411LDY supports analog signal ranges up to 0–12 V with 12 V single supply, or ±5 V with ±5 V dual supply. Absolute maximum ratings allow V+ to V− up to 13 V, but sustained operation beyond specified ranges risks diode clamping and increased leakage. For reliable 12 V rail-to-rail switching, ensure V+ = 12 V, V− = 0 V, and analog signals remain within 0–12 V-exceeding this may forward-bias internal protection diodes and degrade DG411LDY performance over time.

Does the DG411LDY require external pull-up or pull-down resistors on its control inputs?

No, the DG411LDY does not require external pull-up or pull-down resistors on IN1–IN4. Its TTL/CMOS-compatible inputs have defined thresholds (≤0.8 V for logic low, ≥2.4 V for logic high) and draw less than 1.5 µA over temperature, enabling direct connection to FPGA GPIO, MCU pins, or logic gates. Internal input structure provides sufficient noise margin; adding external resistors is unnecessary unless system-level noise immunity requirements exceed standard industrial EMC thresholds.

How does the DG411LDY handle charge injection in sample-and-hold circuits?

The DG411LDY specifies 5 pC typical charge injection, measured with V_g = 0 V, R_g = 0 Ω, and C_L = 10 nF. In sample-and-hold applications, this results in <0.5 mV step error when driving a 10 nF hold capacitor-well within 12-bit resolution limits. To minimize error further, pair DG411LDY with a low-impedance driver and use guard traces around switch nodes; the device's break-before-make action also prevents charge sharing between adjacent channels during sampling transitions.