LTC5544IUF

RF Mixers Overview

The LTC5544IUF is a high dynamic range downconversion mixer IC from Analog Devices, optimized for 4GHz to 6GHz RF applications. It integrates an IF buffer amplifier, LO buffer amplifier, and bias circuits within a compact 16-lead 4mm x 4mm QFN package. Key electrical specifications include a conversion gain of 7.4dB, an input IP3 of 25.9dBm, and a noise figure of 11.3dB at 5250MHz. The device operates on a 3.3V supply with a typical power consumption of 640mW, supporting low LO drive levels of +2dBm.

RF Mixers Feature Summary

• Integrates high-gain IF amplifier, LO buffer, and RF baluns for simplified design
• Provides single-ended 50Ω matching for both RF and LO inputs
• Supports shutdown mode for TDD systems with reduced current consumption
• Features high isolation between LO-RF and LO-IF ports

RF Mixers Applications

• 5GHz WiMAX receiver front-ends
• WLAN receiver architectures
• Point-to-point broadband communication links
• Military and radar communication systems

RF Mixers Procurement Notes

Verify the specific suffix (e.g., #PBF or #TRPBF) against your required packaging format, as the base model number may refer to multiple tape-and-reel or tube options. Confirm the industrial temperature grade (IUF) matches your environmental requirements. Ensure the 16-QFN footprint aligns with your PCB layout constraints before finalizing procurement orders.

RF Mixers Selection Notes

Select this component when designing receivers operating in the 4GHz to 6GHz band requiring high linearity and low noise. It is suitable for applications needing integrated buffering to minimize external components. Consider the 3.3V supply constraint and the benefit of integrated LO/RF buffers for space-constrained designs compared to discrete mixer solutions.

RF Mixers Part Context

The LTC5544 belongs to a family of high dynamic range, high-gain passive downconversion mixers covering 600MHz to 6GHz. While other models in the series target different frequency ranges, the LTC5544 is specifically optimized for the 4GHz to 6GHz segment, offering tailored performance for WiMAX and WLAN bands with integrated signal conditioning.

RF Mixers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing system architecture if considering alternative mixers from the same product family.