DG418CJ+

Analog Switches, Multiplexers, Demultiplexers Overview

The DG418CJ+ is a single-pole/single-throw (SPST) precision CMOS analog switch manufactured by Analog Devices Inc./Maxim Integrated. It features a maximum on-resistance of 35 ohms and operates with a single supply voltage ranging from +10V to +30V, or bipolar supplies from ±4.5V to ±20V. The device guarantees low charge injection of 10pC maximum and off-leakage current below 5nA at +85°C. Switching times are specified as 175ns maximum for turn-on and 145ns maximum for turn-off. It is housed in an 8-pin Plastic DIP package and supports an operating temperature range of 0°C to +70°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• TTL/CMOS logic compatible interface
• Rail-to-rail signal handling capability
• Low power consumption design

Analog Switches, Multiplexers, Demultiplexers Applications

• Sample-and-Hold Circuits
• Communications Systems
• Test Equipment
• Battery-Operated Systems
• Audio Signal Routing

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component authenticity through official manufacturer channels or authorized distributors. Confirm that the part number matches the exact specifications required for your circuit design. Check for RoHS compliance status if environmental regulations apply to your manufacturing process. Ensure proper handling procedures are followed during installation to prevent electrostatic discharge damage.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component when a normally open SPST configuration is required. Consider the 35 ohm on-resistance limit for signal integrity requirements. Verify that the operating temperature range meets the environmental conditions of the application. Ensure supply voltages remain within the specified limits to maintain performance characteristics.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the DG417/DG418/DG419 family of improved precision CMOS analog switches. The DG418 specifically provides a single-pole/single-throw normally open switch configuration. It shares common fabrication processes and electrical characteristics with its siblings, differing primarily in channel count and switching topology.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

DG418CJ

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the default state of the DG418 switch?

The DG418 is a normally open switch, meaning the connection between the source and drain terminals is open when the logic input is inactive.

How does the DG418 handle overvoltage conditions?

Signals on the source or drain terminals exceeding the supply rails are clamped by internal diodes. External blocking diodes can be added for additional protection if power-supply sequencing cannot be guaranteed.

Is the DG418 suitable for high-frequency applications?

The device offers an off-isolation rejection ratio of 68dB at 1MHz, making it suitable for various communication and test equipment applications requiring moderate frequency signal routing.