DG418CY

Analog Switches, Multiplexers, Demultiplexers Overview

The DG418CY is a single-pole/single-throw (SPST) precision CMOS analog switch manufactured by Analog Devices Inc./Maxim Integrated. It operates within a temperature range of 0°C to +70°C and is housed in an 8-SOIC package. The device supports single-supply voltages from +10V to +30V or bipolar supplies from ±4.5V to ±20V. Key electrical specifications include a maximum on-resistance of 35Ω, a maximum on-resistance flatness of 4Ω, and a maximum charge injection of 10pC. Switching times are limited to 175ns for turn-on and 145ns for turn-off.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Features guaranteed on-resistance matching between channels and guaranteed on-resistance flatness over the signal range.
• Supports rail-to-rail signal handling with TTL/CMOS-logic compatibility.
• Provides low off-leakage current performance over temperature variations.

Analog Switches, Multiplexers, Demultiplexers Applications

• Sample-and-Hold Circuits
• Communications Systems
• Test Equipment

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific suffix 'CY' corresponds to the SOIC-8 package and the 0°C to +70°C commercial temperature grade. Confirm that the component meets RoHS compliance requirements if applicable to the project standards. Ensure the ordering information matches the manufacturer's current datasheet revision to avoid discrepancies in pin configurations or electrical characteristics.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a normally open SPST configuration is required for signal routing. The DG418CY is suitable for applications needing low power consumption and high ESD tolerance. Consider the 0°C to +70°C operating range to ensure it aligns with the environmental conditions of the target system.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG418CY belongs to the redesigned DG417/DG418/DG419 family of precision CMOS analog switches. This series offers improved performance metrics compared to previous iterations, including better on-resistance matching and lower charge injection. The DG418 specifically provides a single channel with a normally open state, distinguishing it from the normally closed DG417 and the dual-channel DG419.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG418CJ

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the logic input voltage requirement for the DG418CY?

The logic supply (VL) must be connected to +5V for TTL compatibility or to V+ for CMOS-logic level inputs.

How does the DG418 handle overvoltage protection?

Signals on S, D, or IN exceeding V+ or V- are clamped by internal diodes. External blocking diodes can be added for additional protection if power-supply sequencing is not possible.