ASNT8151-KHC

Overview

The ASNT8151-KHC is a programmable clock multiplier (CMU) fabricated in SiGe technology, designed for high-frequency applications between 24.0 and 32.1 GHz. It integrates three selectable LC-tank voltage-controlled oscillators (VCOs) managed by a phase-locked loop with an external RC loop filter. The device accepts an LVDS reference input at f/16 and generates a full-rate CML output clock alongside a divided-by-16 LVDS output. Operating on a single positive or negative supply of 2.8V to 3.3V, it consumes up to 530 mW at maximum speed. Key electrical specifications include 200 fs peak-to-peak jitter at 25.78 GHz and -108 dBc/Hz phase noise at 32 GHz offset by 1.0 MHz.

Feature Summary

• Triple-range PLL with three integrated VCOs covering 24.0–32.1 GHz
• LVDS reference input interface with internal 100 Ohm termination
• Fully differential CML full-rate output with internal 50 Ohm termination
• Selectable LVDS divided-by-16 output interface
• SiGe fabrication for high performance and reliability

Applications

• High-speed serial communication systems requiring precise clock synthesis
• Test and measurement equipment needing low-jitter frequency generation
• Telecommunications infrastructure utilizing Synchronous Ethernet or OTN protocols

Procurement Notes

Verify the specific package configuration and pinout compatibility before integration. Confirm that the external loop filter components meet the recommended schematic parameters for stability. Ensure power supply rails are strictly maintained within the 2.8V to 3.3V range to prevent damage. Check RoHS compliance documentation if required for your manufacturing process.

Selection Notes

Select this component when a wide frequency range from 24.0 to 32.1 GHz is required from a single IC. Choose based on the need for both full-rate CML and divided LVDS outputs simultaneously. Consider the SiGe process advantages for yield and reliability in harsh environments. Evaluate the power consumption of 530 mW against thermal management capabilities.

Part Context

This device belongs to the ASNT8151 series of programmable clock multipliers. The 'KHC' suffix denotes the specific custom 24-pin CQFN package variant. It is part of Advanced Science And Novel Technology Company's portfolio focused on high-frequency timing solutions.

Replacement Considerations

No direct public substitute part numbers are documented. Due to the proprietary SiGe design and custom package, functional equivalents must be evaluated based on frequency range, jitter specs, and interface compatibility.