LTC5549IUDB

RF Mixers Overview

The LTC5549IUDB is a passive double-balanced mixer IC designed for broadband RF applications. It operates with an RF frequency range of 2GHz to 14GHz and an IF range of 500MHz to 6GHz. The device features an integrated LO buffer amplifier requiring only 0dBm drive power, alongside an optional internal LO doubler controlled by the X2 pin. Key electrical parameters include a conversion loss of 8dB at 5.8GHz, an input P1dB of +14.3dBm, and an OIP3 of 20.2dBm. It functions on a supply voltage of 3V to 3.6V with a current draw of 115mA. The component is housed in a 12-QFN (3x2mm) package.

RF Mixers Feature Summary

• Integrated LO buffer amplifier eliminates the need for external drive circuitry
• Optional internal LO doubler allows use of lower-frequency PLL sources
• Broadband operation supports both upconversion and downconversion tasks
• Low LO-RF leakage ensures high signal isolation

RF Mixers Applications

• Radar systems operating in C, X, and Ku bands
• Wireless communication infrastructure equipment
• Point-to-point microwave communication links
• General-purpose microwave transceivers

RF Mixers Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm packaging type and RoHS compliance status. Note that distribution channels may list this part as discontinued or limited supply; always cross-reference the manufacturer's current product status before finalizing procurement plans to ensure availability and authenticity.

RF Mixers Selection Notes

Select this component when a wide bandwidth from 2GHz to 14GHz is required without external LO amplification. The integrated doubler is advantageous for simplifying phase-locked loop designs. Ensure the application requires single-ended 50Ω ports and can accommodate the specified 115mA supply current within the thermal constraints of the QFN package.

RF Mixers Part Context

This part belongs to the LTC5549 family of passive mixers. It is distinct from active mixers and offers a balance of linearity and noise performance suitable for microwave frequencies. The device complements other Analog Devices RF solutions by providing a compact, integrated solution for frequency translation in complex signal chains.

RF Mixers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices for direct replacements or consult distributor databases for equivalent specifications if this specific part number is unavailable.