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LTC5540 - 600MHz to 1.3GHz High Dynamic Range Downconverting Mixer

The LTC5540 is part of a family of high dynamic range, high gain passive downconverting mixers covering the 600MHz to 4GHz frequency range. The LTC5540 is optimized for 0.6GHz to 1.3GHz RF applications. The LO frequency must fall within the 0.7GHz to 1.2GHz range for optimum performance. A typical application is a LTE or GSM receiver with a 700MHz to 915MHz RF input and high-side LO.

The LTC5540 is designed for 3.3V operation, however; the IF amplifier can be powered by 5V for the highest P1dB. An integrated SPDT LO switch with fast switching accepts two active LO signals, while providing high isolation.

The LTC5540’s high conversion gain and high dynamic range enable the use of lossy IF filters in high-selectivity receiver designs, while minimizing the total solution cost, board space and system-level variation.

Features Conversion Gain: 7.9dB at 900MHz IIP3: 25.9dBm at 900MHz Noise Figure: 9.9dB at 900MHz 16.2dB NF Under +5dBm Blocking High Input P1dB 3.3V Supply, 640mW Power Consumption Shutdown Pin 50Ω Single-Ended RF and LO Inputs LO Inputs 50Ω Matched when Shutdown High Isolation LO Switch 0dBm LO Drive Level High LO-RF and LO-IF Isolation Small Solution Size 20-Lead (5mm × 5mm) QFN package Typical Application

Applications Wireless Infrastructure Receivers (LTE, GSM, W-CDMA) Point-to-Point Microwave links High Dynamic Range Downmixer Applications Packaging

Demo Boards