SA639DH/01,118

RF Mixers Overview

The SA639DH/01,118 is a monolithic FM/IF system designed for high-speed digital wireless applications. It integrates an RF mixer, IF amplifier, and demodulator within a single package. The device operates on a supply voltage ranging from 2.7 V to 5.5 V, with a typical operating voltage of 3 V. It supports frequencies up to 500 MHz and functions within a temperature range of -40°C to +85°C. Packaged in a 24-TSSOP surface-mount format, this silicon-based component is classified as an end-of-life product.

RF Mixers Feature Summary

• Integrates RF mixer, IF amplifier, and FM demodulator into a single low-voltage monolithic circuit
• Designed specifically for high-speed digital wireless PCS applications requiring superior performance
• Supports various modulation schemes including ASK, DECT, FSK, UHF, and VHF signals

RF Mixers Applications

• Digital European Cordless Telephone (DECT) systems
• High-speed digital wireless Personal Communication Services (PCS)
• GFSK application receivers
• FM/IF receiver front-ends

RF Mixers Procurement Notes

This component is officially designated as End-of-Life by NXP Semiconductors. Manufacturers have announced that production will cease, and the part is scheduled to be discontinued. Procurement should focus on verifying remaining stock availability through authorized distributors or secondary market suppliers. Designers must initiate immediate transition planning to alternative components to ensure long-term supply chain stability and avoid future obsolescence risks associated with this specific part number.

RF Mixers Selection Notes

Engineers selecting this component should prioritize designs targeting DECT and high-speed GFSK wireless protocols. The integrated nature of the FM/IF system simplifies schematic design by reducing external component count. However, due to the low-voltage operation requirements, power supply decoupling and noise management are critical. Selection must account for the 24-TSSOP footprint constraints and verify compatibility with existing board layouts before finalizing the bill of materials.

RF Mixers Part Context

The SA639 series represents NXP's solution for compact, low-power wireless communication blocks. This specific model serves as a complete receiver chain solution, eliminating the need for discrete mixer and demodulator stages. It belongs to the Wireless & RF Integrated Circuits category, tailored for consumer electronics and cordless telephone markets where space efficiency and signal integrity are paramount design drivers.

RF Mixers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. As the component is marked as obsolete, engineers must evaluate generic RF mixer and IF amplifier combinations or consult NXP technical support for current recommended replacements.