ADG442BNZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG442BNZ is a monolithic CMOS analog switch comprising four independently selectable single-pole single-throw (SPST) channels. It operates on an enhanced LC2MOS process, supporting dual supplies from ±5 V to ±15 V or a single supply up to +12 V. The device features low on-resistance with a maximum of 70 Ω and excellent matching of 3 Ω max. It exhibits fast switching times, with tON under 110 ns and tOFF under 60 ns. The switches are controlled by logic high inputs and offer break-before-make action. Key electrical parameters include a maximum leakage current of 3 nA and charge injection of 6 pC.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Enhanced LC2MOS technology provides low power dissipation while maintaining high switching speed and flat on-resistance profiles for signal linearity.
• Trench isolation architecture ensures A-grade latch-up immunity, protecting the device against 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 routing
• Automatic test equipment
• Precision data acquisition systems
• Battery-powered portable instruments

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component marking matches the ADI logo and date code. Confirm the package is a 16-lead plastic dual in-line (PDIP) variant. Check for RoHS compliance markings corresponding to the 'NZ' suffix. Ensure the supplier provides traceability documentation consistent with Analog Devices manufacturing standards.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG442BNZ when logic-high control signals are required to activate the switches. This model differs from the ADG441/ADG444 series, which utilize logic-low activation. Verify that the application voltage range fits within the specified VSS to VDD limits. Consider the PDIP package constraints if surface-mount space is limited.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG442BNZ belongs to the ADG44x family of quad SPST switches. It serves as a direct plug-in replacement for legacy DG442 devices. The part is designed for general-purpose analog signal switching where low distortion and high reliability are critical requirements.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ADG442BNZ is a pin-compatible upgrade for the DG442. It also functions as a plug-in replacement for the ADG202A. Verify logic polarity compatibility when substituting these parts, as the ADG442 requires logic high to turn on.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ADG442 differ from the ADG441?

The ADG442 switches turn on when a logic high is applied to the control input. In contrast, the ADG441 switches turn on when a logic low is applied.

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

Trench isolation 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 power supply?

Yes, the ADG442 can operate from a single-rail power supply, such as +12 V, provided the analog signal range remains unipolar.