AK1543

Overview

The AK1543 is a Delta-Sigma Fractional-N frequency synthesizer designed for RF applications. It operates with a maximum output frequency of 1300MHz, providing precise clock generation and signal synthesis capabilities. The device is housed in a compact 24-pin QFN package, suitable for space-constrained designs. This component serves as a critical element in systems requiring stable and accurate frequency references.

Feature Summary

• Utilizes Delta-Sigma fractional-N architecture for high-performance frequency synthesis
• Supports operation up to 1300MHz for versatile RF application integration
• Available in a compact 24-lead QFN package for efficient board layout

Applications

• RF frequency synthesis in communication systems
• Clock generation for wireless transceivers
• Signal processing equipment requiring precise frequency references

Procurement Notes

Verify the current manufacturing status before procurement, as official sources indicate this product may no longer be manufactured. Confirm RoHS compliance and lead-free status through authorized distributors. Ensure compatibility with existing system requirements regarding frequency range and package type. Check for valid substitutes if discontinuation is confirmed.

Selection Notes

Select the AK1543 when a Delta-Sigma fractional-N synthesizer is required for frequencies up to 1300MHz. Consider its 24-QFN footprint for size-sensitive designs. Evaluate performance against specific phase noise and spurious requirements. Verify availability and lifecycle status due to potential discontinuation.

Part Context

Asahi Kasei Microdevices (AKM) specializes in advanced sensing devices and mixed-signal ICs. The company's portfolio includes Hall sensors, audio components, and millimeter-wave radar solutions. The AK1543 represents their expertise in precision frequency synthesis within the broader context of RF and clock generation technologies.

Replacement Considerations

Official sources indicate the AK1543 is no longer manufactured. Identify equivalent Delta-Sigma fractional-N synthesizers from AKM or other vendors supporting 1300MHz operation in a 24-QFN package. Validate pinout and electrical specifications for direct replacement.