ADG441BR

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG441BR is a monolithic CMOS device comprising four independently selectable single-pole single-throw (SPST) switches. It operates on an enhanced LC2MOS process for low power dissipation and high switching speed. The analog signal range extends from VSS to VDD, supporting both single and dual supply configurations. Key electrical parameters include a maximum on-resistance of 70 Ω at ±13.5 V supplies, with a maximum ΔRON of 9 Ω and RON match of 3 Ω. Switching times are specified as tON max 110 ns and tOFF max 60 ns under dual supply conditions. Leakage currents are limited to 3 nA max.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Trench isolation technology provides latch-up protection for A-grade reliability.
• Break-before-make switching action prevents channel shorting in multiplexer applications.
• Low charge injection minimizes output transients during digital input switching.
• Flat on-resistance profile ensures good linearity and low distortion for audio signals.

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 the specific ordering suffix to confirm package type and compliance status. The 'R' suffix indicates the SOIC-16 package, while 'Z' denotes RoHS compliance. Confirm that the B version meets the required industrial temperature range of -40°C to +85°C. Ensure the logic control inputs align with the system voltage levels, as the ADG441 generates its internal logic supply without a dedicated VL pin.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG441BR when low power consumption and fast switching speeds are critical for battery-operated or portable designs. Choose this component over junction-isolated alternatives if latch-up immunity under severe overvoltage conditions is required. Verify that the 70 Ω on-resistance meets the signal integrity requirements for the specific application bandwidth and current load.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG441BR belongs to the ADG441/ADG442/ADG444 family of quad SPST analog switches manufactured by Analog Devices. It serves as a plug-in replacement for legacy DG441 devices. The BR variant specifically utilizes the 16-lead Standard Small Outline Package. This part is designed for applications requiring high performance in a compact form factor with robust ESD and latch-up protection.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The datasheet identifies the ADG441 as a direct plug-in replacement for the DG441. Designers upgrading from older junction-isolated switches should note the improved latch-up immunity provided by the trench isolation process. Verify pin compatibility and thermal characteristics when transitioning to the SOIC package.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ADG441 handle logic power supply compared to the ADG444?

The ADG441 does not have a dedicated VL pin; it generates its internal logic power supply via an on-chip voltage generator. In contrast, the ADG444 requires an external 5 V logic power supply applied to the VL pin.

What is the purpose of the break-before-make switching action?

This feature ensures that one switch opens before another closes, preventing channel shorting when multiple switches are configured as a multiplexer.

Does the ADG441 support single-supply operation?

Yes, the ADG441 can operate from a single-rail power supply where the analog signal is unipolar. It is fully specified with a single 12 V power supply.