ADG221KN

Analog Switches, Multiplexers, Demultiplexers Overview

The ADG221KN is a quad single-pole single-throw (SPST) analog switch manufactured by Analog Devices Inc. in a 16-pin plastic dual in-line package. It integrates four independent CMOS switches within a single integrated circuit, designed for signal routing applications. The device operates with a nominal supply voltage of 15 V and supports a maximum negative supply of -15 V. Key electrical characteristics include a maximum on-resistance of 145 Ω and a typical turn-on time of 300 ns. It functions reliably across an industrial temperature range from -40 °C to +85 °C.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrates four independent SPST CMOS switches in a compact 16-pin DIP package
• Designed for general-purpose signal switching and multiplexing tasks
• Operates with standard bipolar supply voltages up to +/- 15 V

Analog Switches, Multiplexers, Demultiplexers Applications

• Data acquisition systems requiring signal isolation or selection
• Multiplexer circuits for sensor signal routing
• Test and measurement equipment signal paths
• Industrial control systems for analog signal switching

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified suppliers. Confirm the specific suffix KN corresponds to the 16-pin plastic DIP package variant. Check RoHS compliance status as indicated in official documentation, noting that some sources list this part as non-compliant. Ensure the operating environment remains within the specified -40 °C to +85 °C temperature range for reliable performance.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the ADG221KN when multiple independent analog channels require switching within a single footprint. Compare on-resistance specifications against application requirements, as the maximum value of 145 Ω may impact precision signals. Consider the 300 ns switching speed for timing-sensitive designs. Evaluate package constraints to ensure the 16-pin DIP form factor fits the target PCB layout compared to surface-mount alternatives.

Analog Switches, Multiplexers, Demultiplexers Part Context

This component belongs to the ADG221 family of analog switches from Analog Devices. It serves as a discrete solution for routing analog signals in mixed-signal environments. The device complements other multiplexer and switch products in the manufacturer's portfolio, offering a balance of channel count and package density for board-level signal management.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Publicly confirmed direct substitutes are not available in the provided reference material. Engineers should consult Analog Devices technical support for verified cross-reference options. When replacing, verify pin compatibility and ensure the alternative device meets the same voltage and resistance specifications.