ASNT5090-KMC

Signal Switches, Multiplexers, Decoders Overview

The ASNT5090-KMC is a DC-48Gbps broadband digital 1:2 demultiplexer fabricated in SiGe technology. It accepts a high-speed differential data input and splits it into two differential outputs using a clock signal. The device supports CML logic interfaces with internal 50Ohm termination to Vcc. It operates on a single +3.3V or -3.3V power supply, consuming 730mW. The package is a custom 24-pin CQFP with a center heat slug for thermal management.

Signal Switches, Multiplexers, Decoders Feature Summary

• High-speed 1:2 demultiplexing capability up to 48 Gbps data rate
• Low jitter performance with limited temperature variation over the industrial range
• Fully differential CML input and output interfaces with integrated termination
• Flexible power supply configuration supporting either positive or negative voltage rails

Signal Switches, Multiplexers, Decoders Applications

• High-speed measurement and test equipment
• High-speed proof-of-concept prototyping
• Broadband digital signal processing systems

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific revision level against the manufacturer's datasheet before integration. Confirm that the PCB layout accounts for the required power supply polarity, as AC termination is mandatory when using a positive supply with grounded devices. Ensure the center heat slug is properly soldered to the appropriate plane for thermal dissipation.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component for applications requiring a reliable 1:2 demultiplexing function at speeds up to 48 Gbps. The SiGe fabrication ensures high performance and yield. Consider the thermal requirements of the custom CQFP package and ensure the design accommodates the specific common mode voltage levels required for DC-coupled operation.

Signal Switches, Multiplexers, Decoders Part Context

This device belongs to the ASNT series of high-speed mixed-signal ASICs from ADSANTEC. These components utilize SiGe, BiCMOS, and Si CMOS technologies to provide board-level solutions for optical transceiver testing and signal distribution. The ASNT5090-KMC specifically addresses the need for precise clock-driven data splitting in high-frequency environments.

Signal Switches, Multiplexers, Decoders Replacement Considerations

No public confirmed substitute part numbers are available in the documentation.

Signal Switches, Multiplexers, Decoders FAQ

How does the power supply configuration affect the I/O termination?

When operating with a positive supply (+3.3V), all I/Os require AC termination if connected to devices with 50 Ohm termination to ground. Different PCB layouts are necessary for each power supply combination.

What is the recommended signaling mode for optimal performance?

The differential DC signaling mode is recommended for optimal performance. In this mode, the input signal’s common mode voltage must comply with the specifications provided in the electrical characteristics section.