MCH12140DG

Clock Generators, PLLs, Frequency Synthesizers Overview

The MCH12140DG is a phase-frequency detector manufactured by onsemi, designed for phase-locked loop applications requiring minimal phase and frequency difference at lock. It operates with a maximum toggle frequency of 800 MHz and supports an input frequency range from 650 MHz to 800 MHz. The device utilizes a small outline 8-lead SOIC package (SOIC-8) and functions within an operating temperature range of -40°C to +70°C. It is powered by a supply voltage between -4.2 V and -5.5 V, compatible with MECL 10H logic levels.

Clock Generators, PLLs, Frequency Synthesizers Feature Summary

• Provides differential UP and DOWN outputs to generate error voltage for VCO control based on phase and frequency differences.
• Features internal input pulldown resistors and high ESD protection capability exceeding 1000 V.
• Functionally compatible with MC12040 phase-frequency detectors while extending maximum frequency performance.

Clock Generators, PLLs, Frequency Synthesizers Applications

• Phase-locked loop circuits requiring high bandwidth and low phase/frequency difference at lock.
• Systems utilizing high-performance VCOs such as the MC100EL1648.
• +5.0 V systems requiring MECL 10H logic level compatibility.

Clock Generators, PLLs, Frequency Synthesizers Procurement Notes

Verify component authenticity through authorized distributors or official manufacturer channels. Confirm RoHS compliance and Pb-free status via current datasheets. Ensure ordering suffix matches required packaging specifications. Validate technical parameters against specific application requirements before procurement.

Clock Generators, PLLs, Frequency Synthesizers Selection Notes

Select this component for applications needing high-speed phase detection up to 800 MHz. Choose the MCH variant specifically for MECL 10H logic compatibility. Consider the SOIC-8 package for surface mount assembly constraints. Verify power supply voltage ranges align with system design specifications.

Clock Generators, PLLs, Frequency Synthesizers Part Context

This device belongs to the MCH/K12140 series of phase-frequency detectors. It serves as a digital circuit used as a phase comparator in analog phase-locked loops. The series includes variants compatible with different ECL standards, providing flexibility for various logic interface requirements in communication and signal processing systems.

Clock Generators, PLLs, Frequency Synthesizers Replacement Considerations

The MCK12140DR2G is listed as discontinued. The MCK12140DG is available in tube packaging. Verify functional compatibility with existing designs when substituting between H-series and K-series variants due to potential logic level differences.