ADG442ABN

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG442ABN is a monolithic CMOS quad SPST switch fabricated on an enhanced LC2MOS process. It features low on-resistance of 70 Ω max and low ΔRON of 9 Ω max. The device supports dual supply operation from ±13.5 V to ±16.5 V or single supply up to 13.2 V, with analog signal ranges extending to the supplies. Switching times are tON < 110 ns and tOFF < 60 ns. Leakage currents are limited to 3 nA max, and charge injection is 6 pC max. The A-grade variant includes trench isolation for latch-up protection.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Trench-isolated construction provides inherent latch-up proof capability for A-grade parts.
• Break-before-make switching action prevents channel shorting in multiplexer configurations.
• Flat on-resistance profile ensures good linearity and low distortion for audio signals.
• Single-supply operation allows use with unipolar power rails.

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio and video signal switching
• Automatic test equipment
• Precision data acquisition systems
• Sample-and-hold circuits
• Communication systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify that the specific ordering suffix corresponds to the required package type and RoHS compliance status. Confirm that the A-grade designation indicates the presence of trench isolation technology. Ensure the logic control inputs match the system voltage levels, as the ADG442 activates with a logic high input. Check temperature range specifications against environmental requirements.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG442 when logic-high activation is required, distinguishing it from the ADG441 which uses logic-low activation. Choose the A-grade version if latch-up immunity under overvoltage conditions is critical. Consider the ADG444 only if an external 5 V logic supply pin is necessary rather than internal generation. Evaluate on-resistance and leakage specifications against signal integrity requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG442 is part of the ADG441/ADG442/ADG444 family of LC2MOS quad SPST switches. These devices serve as plug-in replacements for legacy DG441/DG442/DG444 components. The family shares similar electrical characteristics but differs in logic control polarity and power supply configuration options.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet identifies the ADG442 as a direct plug-in replacement for the DG442. Designers should verify pin compatibility and logic level requirements when substituting older discrete gate arrays or earlier CMOS switch generations.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ADG442 differ from the ADG441?

The ADG442 switches turn on with a logic high input, whereas the ADG441 turns on with a logic low input. Both generate their own logic power supply internally.

What is the benefit of the A-grade designation?

The A-grade parts utilize trench isolation technology, which eliminates parasitic junctions between NMOS and PMOS transistors, making the device completely latch-up proof even under severe overvoltage conditions.

Can the ADG442 operate with a single supply?

Yes, the ADG442 can operate from a single-rail power supply, such as +12 V, where VSS is connected to ground. The analog signal range extends from 0 V to VDD.