ADG451BNZ

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG451BNZ is a monolithic CMOS analog switch IC from Analog Devices, featuring four independent single-pole/single-throw (SPST) channels. Fabricated on an enhanced LC2MOS process, it provides low power dissipation and high switching speed. The device operates with a maximum supply voltage of 44 V and supports dual supplies ranging from ±4.5 V to ±20 V or a single supply as low as 5.0 V. It exhibits a maximum on resistance of 5 Ω, ultralow leakage currents, and fast switching times with tON max at 180 ns and tOFF max at 140 ns. The component is housed in a 16-lead Plastic Dual In-Line Package (PDIP) and functions within an industrial temperature range of -40°C to +85°C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Enhanced LC2MOS technology ensures ultralow power dissipation while maintaining high switching speeds and low on resistance.
• TTL- and CMOS-compatible digital control logic allows direct interfacing with standard logic families.
• Extended signal range fully extends to the supply rails, supporting both unipolar and bipolar analog signals.
• Low charge injection minimizes output transients during digital input switching.

Analog Switches, Multiplexers, Demultiplexers Applications

• Relay replacement circuits
• Audio and video signal switching
• Automatic test equipment
• Precision data acquisition systems
• Sample-and-hold applications

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the specific ordering suffix to confirm package type and lead-free status. The 'BNZ' designation indicates a 16-lead Plastic Dual In-Line Package (N-16) that is Pb-free. Confirm the revision level against the manufacturer's current documentation to ensure compatibility with design requirements.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG451BNZ for applications requiring low on resistance and minimal power consumption. Ensure the analog signal range remains within the supply rails. Verify that the digital control inputs match the system logic levels, as this variant uses non-inverted logic where a logic low turns the switch on.

Analog Switches, Multiplexers, Demultiplexers Part Context

The ADG451BNZ belongs to the ADG451/ADG452/ADG453 family of quad SPST switches. It differs from the ADG452 primarily in its digital control logic polarity. This component serves as a pin-compatible upgrade for older ADG411 and ADG431 series devices, offering improved performance metrics such as lower on resistance and faster switching speeds.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The ADG451BN is a non-Pb-free equivalent with identical electrical specifications. Other variants in the family include ADG451BRZ (SOIC-16) and ADG451BRUZ (TSSOP-16), which require footprint adaptation but share the same core functionality.

Analog Switches, Multiplexers, Demultiplexers FAQ

How does the digital control logic function for the ADG451?

The ADG451 utilizes non-inverted logic; a logic low input turns the corresponding switch on, while a logic high input turns it off.

What is the maximum continuous current rating for the switches?

Each switch channel supports a continuous current of up to 100 mA.

Can the ADG451BNZ operate with a single power supply?

Yes, the device can operate with a single supply voltage as low as 5.0 V, provided the analog signal is unipolar.