ADG442BRZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG442BRZ is a monolithic CMOS device comprising four independently selectable SPST switches, fabricated on an enhanced LC2MOS process. It operates with single or dual supplies ranging from ±5 V to ±15 V (single supply up to +12 V). Key electrical parameters include a maximum on-resistance of 70 Ω, maximum leakage current of 3 nA, and charge injection of 6 pC. Switching times are specified at tON < 110 ns and tOFF < 60 ns. The device features trench isolation for latch-up protection and operates within an industrial temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Enhanced LC2MOS process provides low power dissipation while maintaining high switching speed and low on-resistance.
• Trench isolation technology eliminates parasitic junctions, ensuring the device is completely latch-up proof under severe overvoltage conditions.
• Break-before-make switching action prevents channel shorting when configured in multiplexer applications.

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio and video signal switching
• Automatic test equipment
• Precision data acquisition systems
• Battery-powered portable instruments
• Sample-and-hold circuits

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify that the specific part number matches the required logic control polarity, as the ADG442 family differs from the ADG441 and ADG444 variants. Confirm RoHS compliance status via the 'Z' suffix designation. Ensure the ordering suffix corresponds to the correct package type and reel configuration if applicable. Cross-reference the datasheet revision to confirm pinout consistency with existing designs.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG442BRZ when the application requires switches to turn on with a logic high input, distinguishing it from the ADG441/ADG444 which activate on logic low. Evaluate the need for trench-isolated A-grade parts if latch-up immunity is critical. Consider the flat on-resistance profile for audio linearity requirements and the ultralow power consumption for battery-operated constraints.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG442BRZ belongs to the ADG441/ADG442/ADG444 family of LC2MOS Quad SPST switches. These devices serve as plug-in upgrades for legacy DG201A, DG202A, and DG211 components, and as replacements for DG441/DG442/DG444 units. The BRZ suffix indicates a 16-lead Standard Small Outline Package (SOIC) that is RoHS compliant.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed direct replacements include the ADG441BRZ and ADG444BRZ, though logic polarity and VL pin requirements differ. Legacy equivalents such as the DG442 may be replaced, but verification of pin compatibility and performance margins is required.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the logic control of the ADG442 differ from the ADG441?

The ADG442 switches turn ON when a logic high is applied to the control input, whereas the ADG441 switches turn ON when a logic low is applied.

What is the purpose of the trench isolation in this component?

Trench isolation places an insulating oxide layer between NMOS and PMOS transistors, eliminating parasitic diodes and making the switch completely latch-up proof even under overvoltage conditions.

Can the ADG442 operate with a single power supply?

Yes, the ADG442 supports single-supply operation where the analog signal is unipolar, fully specified with a single +12 V power supply.