MAX9985ETX-T

RF Mixers Overview

The MAX9985ETX-T is a dual, high-linearity active downconversion mixer manufactured using SiGe technology. It operates within a radio frequency range of 700 MHz to 1 GHz and supports an intermediate frequency up to 250 MHz. The device provides a typical gain of 7.5 dB with a P1dB compression point of 16.2 dBm and a noise figure of 10.5 dB. It functions on a single 5 V supply, drawing approximately 400 mA of current. Packaged in a TQFN-EP-36 format, it is designed for robust performance in wireless communication systems.

RF Mixers Feature Summary

• Integrates dual active mixers with dedicated local oscillator buffers for simplified circuit design
• Utilizes Silicon Germanium (SiGe) process technology to achieve high linearity and low noise characteristics
• Supports direct conversion architectures by handling RF signals from 700 MHz to 1 GHz

RF Mixers Applications

• Cellular base station receivers
• DCS and PCS band downconversion
• UMTS and EDGE receiver front-ends
• Wireless Local Loop (WLL) systems

RF Mixers Procurement Notes

Verify component authenticity through authorized distributors or the manufacturer directly. Confirm that the specific suffix matches the required tape-and-reel packaging configuration. Ensure compliance with RoHS standards and check for any obsolescence notices or lifecycle changes prior to finalizing procurement plans.

RF Mixers Selection Notes

Select this component when high linearity and low noise are critical for receiver sensitivity in the 700 MHz to 1 GHz range. Consider the integrated LO buffer feature if minimizing external passive components is a priority. Evaluate the thermal dissipation capabilities of the TQFN-EP-36 package against the system's power budget requirements.

RF Mixers Part Context

This part belongs to the MAX9985 series of dual active mixers. It is specifically engineered for wireless infrastructure applications requiring efficient frequency translation. The device simplifies design complexity by integrating necessary buffering stages directly onto the silicon die, reducing the need for additional external circuitry.

RF Mixers Replacement Considerations

Public records indicate the MAX9985ETX-T is obsolete. Potential substitutes include the MAX9982ETP+T or other variants within the MAX9985 family, subject to pin compatibility and electrical specification verification.