ADG441BNZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG441BNZ is a monolithic CMOS device comprising four independently selectable single-pole single-throw (SPST) switches. It operates on an enhanced LC2MOS process to provide low power dissipation, high switching speed, and low on-resistance. The device supports dual supply voltages ranging from ±13.5 V to ±16.5 V or a single supply of 10.8 V to 13.2 V. Key electrical parameters include a maximum on-resistance of 70 Ω, a maximum on-resistance matching of 3 Ω, and a maximum charge injection of 6 pC. Switching times are specified with a maximum turn-on time of 110 ns and a maximum turn-off time of 60 ns. The component 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

• Trench isolation technology provides A-grade latch-up protection against severe overvoltage conditions.
• Break-before-make switching action prevents channel shorting in multiplexer configurations.
• Flat on-resistance profile ensures good linearity and low distortion for audio signal switching.
• Ultralow power dissipation makes the device suitable for portable and battery-powered instruments.

Analog Switches, Multiplexers, Demultiplexers Applications

• Audio and video switching
• Automatic test equipment
• Precision data acquisition systems
• Battery-powered systems

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify that the ordering suffix BNZ corresponds to the 16-lead plastic dual in-line package (N-16) and RoHS compliance as defined in the Analog Devices ordering guide. Confirm the specific revision level of the datasheet matches the production batch requirements. Ensure the logic control inputs align with the active-low configuration inherent to the ADG441 model variant.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG441BNZ when a low on-resistance and fast switching speed are required for SPST applications. This model is designed for logic low activation, distinguishing it from the ADG442 which uses logic high. Consider the ADG444 if a dedicated 5 V logic power supply pin is preferred over the internal voltage generator found in the ADG441. Verify that the analog signal range extends to the supply rails meets the system requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG441 is part of the ADG441/ADG442/ADG444 family of quad SPST switches fabricated on an enhanced LC2MOS process. It serves as a plug-in replacement for legacy parts such as the DG441/DG442/DG444 and offers an upgrade path for DG201A/ADG201A and DG202A/ADG202A devices. The B version denotes the industrial temperature grade operating between -40°C and +85°C.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Public confirmed substitute part numbers include DG441DJ+ and MAX391EPE. These alternatives offer similar quad SPST functionality but may differ in on-resistance values, leakage currents, and logic control polarities. Verify pin compatibility and electrical specifications before substitution.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ADG441 handle logic control inputs?

The ADG441 switches turn on when a logic low is applied to the appropriate control input. This differs from the ADG442, which activates with a logic high.

What is the purpose of the NC pin on the ADG441?

Pin 12 is designated as No Connect (NC). It is not internally connected and should be left unconnected in the circuit design.

Does the ADG441 require an external logic supply voltage?

No, the ADG441 generates its logic power supply internally using an on-chip voltage generator. Unlike the ADG444, it does not have a VL pin for an external 5 V logic supply.