MAX4993ELB+T

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4993ELB+T is a single double-pole/double-throw (DPDT) analog switch from the MAX4991–MAX4994 family, manufactured by Analog Devices Inc./Maxim Integrated. It operates on a single +1.8V to +5.5V supply and features a slow turn-on time of 630ms maximum to reduce audio clicks and pops. The device provides an active-low enable input (EN) that forces all channels into high impedance when driven high, reducing supply current. Key electrical parameters include a typical on-resistance of 0.3Ω, on-resistance flatness of 1mΩ, and total harmonic distortion plus noise (THD+N) of 0.004%. It is housed in a space-saving 10-pin UTQFN package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Slow turn-on time designed to minimize audible clicks and pops in audio circuits without requiring external components
• Active-low enable input allows for high-impedance state control and reduced power consumption
• Low on-resistance and low THD+N ensure high-fidelity routing of audio signals
• Space-saving 10-pin UTQFN package suitable for portable applications

Analog Switches, Multiplexers, Demultiplexers Applications

• Speaker and headset source switching
• Audio signal routing in cellular phones
• Portable MP3 players

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm RoHS compliance status as indicated by the '+' suffix. Check for obsolescence notices or lifecycle changes prior to finalizing procurement plans. Ensure proper handling procedures are followed due to the small form factor.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select this component for applications requiring DPDT switching with integrated click-and-pop reduction. Compare against MAX4994 if fast turn-on is preferred over audio transient suppression. Verify supply voltage compatibility within the 1.8V to 5.5V range. Consider thermal performance in dense PCB layouts due to the small package size.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4993ELB+T belongs to the MAX4991–MAX4994 series of low on-resistance analog switches. This family includes dual SPDT variants (MAX491/MAX492) and single DPDT variants (MAX493/MAX494). The series is characterized by its ability to handle high-fidelity audio signals while minimizing power consumption and physical footprint in mobile devices.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

Direct functional substitutes within the same family include the MAX4994EVB+, which offers identical DPDT configuration but lacks the slow turn-on feature. For designs not requiring click-and-pop reduction, the MAX4994 may be considered if faster switching speeds are beneficial.