DG418LEUA+

Analog Switches, Multiplexers, Demultiplexers Overview

The DG418LEUA+ is a precision, monolithic CMOS analog switch featuring a single-pole/single-throw (SPST) configuration housed in an 8-pin µMAX package. It operates with a single supply voltage ranging from +9V to +36V or dual supplies from ±4.5V to ±20V. The device provides a maximum on-resistance of 35Ω and guarantees matched on-resistance between channels at 3Ω maximum. It supports rail-to-rail analog signal handling and features low charge injection of 15pC typical. Digital inputs are compatible with +3V logic levels, defined by a logic-high threshold of 2.0V and a logic-low threshold of 0.8V.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• +3V Logic-Compatible Digital Inputs
• Power-Supply Sequencing-Free Operation
• Rail-to-Rail Analog Signal Handling Capability

Analog Switches, Multiplexers, Demultiplexers Applications

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

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix LEUA corresponds to the 8-pin µMAX package variant when sourcing components. Confirm that the procurement channel provides documentation verifying RoHS compliance and lead-free status as indicated by the plus sign in the part number. Ensure the supplier source is authorized to guarantee authenticity for Maxim Integrated products.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring +3V logic compatibility without level shifting. The SPST configuration is suitable for simple signal routing where normally open behavior is required. Consider the µMAX package dimensions if board space is constrained. Verify that the operating temperature range of -40°C to +85°C meets the environmental requirements of the target system.

Analog Switches, Multiplexers, Demultiplexers Part Context

The DG418LEUA+ belongs to the DG417L/DG418L/DG419L family of precision analog switches manufactured by Analog Devices/Maxim Integrated. This series utilizes an enhanced LC2MOS process to achieve low power dissipation and fast switching speeds. The DG418L specifically denotes the normally open SPST variant within this lineup, distinguishing it from the normally closed DG417L and the double-throw DG419L.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed direct substitutes include the DG417LDY+ and DG419LDJ+. These parts share the same LC2MOS technology and pinout but differ in internal switch configuration. Verify that the functional differences align with the circuit design before substitution.

Analog Switches, Multiplexers, Demultiplexers FAQ

What is the logic input threshold voltage for the DG418LEUA+?

The device features a +0.8V logic-low threshold and a +2.0V logic-high threshold, ensuring compatibility with +3V TTL and CMOS logic.

Does the DG418LEUA+ require specific power-supply sequencing?

No, the DG418LEUA+ allows any power-up sequence and eliminates the need for a separate V_L input, preventing potential latchups associated with older CMOS technologies.

What is the maximum on-resistance flatness guaranteed for this switch?

The device guarantees an on-resistance flatness of 4Ω maximum over the specified signal range.