ADG451BR

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG451BR is a monolithic CMOS device comprising four independently selectable single-pole/single-throw (SPST) switches. Fabricated on an enhanced LC2MOS process, it offers low power dissipation and high switching speed. The analog signal range extends to the supply rails, supporting both single-supply (5 V to 13.2 V) and dual-supply (±4.5 V to ±20 V) operation. Key electrical parameters include a maximum on resistance of 5 Ω, a maximum leakage current of 500 pA, and switching times of 180 ns (tON) and 140 ns (tOFF). It operates within a temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Enhanced LC2MOS process provides ultralow power dissipation suitable for battery-powered instruments.
• Flat on-resistance profile ensures excellent linearity and low distortion for audio signals.
• TTL- and CMOS-compatible digital control logic simplifies interface design.
• High signal bandwidth supports fast video signal switching applications.

Analog Switches, Multiplexers, Demultiplexers Applications

• Relay replacement in signal routing paths
• Audio and video signal switching systems
• Automatic test equipment configurations
• Precision data acquisition circuits
• Sample-and-hold systems requiring low droop

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific package variant required, as the ADG451 family includes DIP, SOIC, and TSSOP options with different suffixes. Confirm RoHS compliance status, indicated by the 'Z' suffix in ordering part numbers. Ensure the selected version matches the required logic polarity, as the ADG451 uses active-low control inputs compared to the inverted logic of the ADG452. Cross-reference pinouts if substituting from older families like the ADG411 or ADG431.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG451BR when low on-resistance and flat RON profile are critical for signal integrity. Choose this component over the ADG452 if active-low digital control logic is preferred for the application. Consider the ADG453 if break-before-make switching action is needed for multiplexer configurations to prevent channel shorting. Evaluate power supply constraints, as the device supports both unipolar and bipolar supply ranges.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG451BR belongs to the ADG451/ADG452/ADG453 family of LC2MOS SPST switches from Analog Devices. These devices are designed as pin-compatible upgrades for the ADG411/ADG412/ADG413 and ADG431/ADG432/ADG433 series. The BR suffix denotes the 16-lead Standard Small Outline Package (SOIC). The family shares common fabrication technology but differs in control logic inversion and switching timing characteristics.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ADG451BR is a direct pin-compatible upgrade for the ADG411BR and ADG431BR. When replacing these legacy parts, verify that the improved specifications such as lower charge injection and faster switching times are compatible with the existing circuit design. No functional changes are required due to identical pinouts and logic levels.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the ADG451 differ from the ADG452?

The ADG451 and ADG452 differ only in their digital control logic. The ADG451 switches turn on with a logic low input, whereas the ADG452 requires a logic high input to activate the switches.

What is the maximum supply voltage rating?

The absolute maximum rating for the difference between VDD and VSS is 44 V. The device is fully specified for dual supplies up to ±20 V or a single supply up to 13.2 V.

Is the ADG451 suitable for video signal switching?

Yes, the combination of fast switching speeds and high signal bandwidth makes the ADG451 suitable for video signal switching applications.