ASNT8142-KMC

Specialized ICS Overview

The ASNT8142-KMC is a SiGe-based Pseudorandom Binary Sequence (PRBS) generator capable of producing DC to 23Gbps output data rates. It supports selectable full-length sequences using either the (x^15 + x^14 + 1) or (x^7 + x^6 + 1) polynomial, controlled via an external signal. The device features fully differential CML input and output interfaces with internal 50-ohm termination. It operates on a single +3.3V or -3.3V supply, consuming 740mW. An additional delayed output allows for frequency doubling when paired with an external multiplexer.

Specialized ICS Feature Summary

• Generates PRBS patterns with lengths of 2^15-1 or 2^7-1 bits based on selectable polynomials
• Supports output data rates from DC up to 23Gbps with 2.5 ps peak-to-peak output jitter
• Includes a secondary output delayed by half the sequence period for frequency doubling applications
• Features asynchronous active-low reset to prevent 'all zeros' lock states in the linear feedback shift register

Specialized ICS Applications

• High-speed serial link testing equipment
• Bit error rate tester (BERT) pattern generation
• Optical communication system validation

Specialized ICS Procurement Notes

Verify the specific package variant matches the custom 24-pin CQFP form factor. Confirm power supply configuration requirements, as PCB layouts differ between positive (+3.3V) and negative (-3.3V) supply modes. Ensure thermal management solutions accommodate the center heat slug for proper dissipation during operation.

Specialized ICS Selection Notes

Select this component for applications requiring high-speed PRBS generation up to 23Gbps. The device requires differential CML clocking and provides differential CML outputs. Consider the need for an external multiplexer if frequency doubling to 40Gbps is required. Verify compatibility with existing test infrastructure regarding voltage levels and termination resistances.

Specialized ICS Part Context

Manufactured by Advanced Science And Novel Technology Company, Inc., the ASNT8142-KMC utilizes Silicon-Germanium (SiGe) technology. The part number suffix '-KMC' denotes the specific custom CQFP package type and pinout configuration provided by the manufacturer.

Specialized ICS Replacement Considerations

No public confirmed substitute part numbers are available in the documentation. Due to the custom package and specific SiGe architecture, direct pin-compatible replacements may not exist without circuit redesign.