ASNT1123-KMM

Signal Switches, Multiplexers, Decoders Overview

The ASNT1123-KMM is a SiGe-based broadband digital DDR 4:1 multiplexer operating from DC to 64 Gbps. It features differential CML I/O with internal 50 Ohm termination and supports half-rate clock input in DDR mode. The device consumes 1.15 W at ±3.3V or -3.3V/0V supply configurations. It includes a quarter-rate clock output (c4op/c4on) for phase alignment, ensuring minimal relative skew across the industrial temperature range.

Signal Switches, Multiplexers, Decoders Feature Summary

• High-speed 4:1 multiplexing capability up to 64 Gbps using SiGe technology
• Differential CML inputs and outputs with integrated 50 Ohm termination
• Half-rate clock input support for DDR mode operation
• Quarter-rate clock output for precise data alignment

Signal Switches, Multiplexers, Decoders Applications

• High-speed proof-of-concept prototyping
• Broadband digital signal serialization
• DDR interface circuit design

Signal Switches, Multiplexers, Decoders Procurement Notes

Verify the specific ordering suffix KMM corresponds to the custom 44-pin CQFP package configuration. Confirm power supply requirements match either negative (-3.3V) or positive (+3.3V) setups, as PCB layouts differ significantly between these two configurations. Ensure thermal management addresses the center heat slug soldered to the appropriate plane.

Signal Switches, Multiplexers, Decoders Selection Notes

Select this component when a high-speed 4:1 serializer with low jitter and minimal temperature variation is required. It is suitable for applications needing differential CML interfaces and internal termination. Consider the specific package type and power supply polarity during the initial design phase to ensure compatibility with existing board layouts.

Signal Switches, Multiplexers, Decoders Part Context

This part belongs to the ADSANTEC ASNT1123 series of broadband digital multiplexers. It utilizes Silicon Germanide (SiGe) fabrication for high performance and reliability. The device is designed for seamless operation over a wide data rate range, making it a specialized solution for high-speed digital communication systems requiring precise timing control.

Signal Switches, Multiplexers, Decoders Replacement Considerations

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