LTC5540 Datasheet | Linear Technology

Electrical Specifications Subject to Change Features n n n n n n n n n n n n n n LTC5540 0.6GHz to 1.3GHz High Dynamic Range Downconverting Mixer DESCRIPTION The LTC®5540 is part of a family of high dynamic range 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 P1d B. 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. High Dynamic Range Downconverting Mixer Family PART# LTC5540 LTC5541 LTC5542 LTC5543 RF RANGE 600MHz - 1.3GHz 1.3GHz - 2.3GHz 1.6GHz - 2.7GHz 2.3GHz - 4GHz LO RANGE 700MHz - 1.2GHz 1.4GHz - 2.0GHz 1.7GHz - 2.5GHz 2.4GHz - 3.6GHz Conversion Gain: 7.9d B at 900MHz IIP3: 25.9d Bm at 900MHz Noise Figure: 9.9d B at 900MHz 17.7d B NF Under 5d Bm Blocking High Input P1d B 3.3V Supply, 640m W Power Consumption Shutdown Pin 50Ω Single-Ended RF and LO Inputs LO Inputs 50Ω Matched when Shutdown High Isolation LO Switch 0d Bm LO Drive Level High LO-RF and LO-IF Isolation Small Solution Size 20-Lead (5mm × 5mm) QFN package APPLICATIONS n n Wireless Infrastructure Receivers (LTE, GSM, CDMA) High Dynamic Range Downmixer Applications L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. .. TYPICAL APPLICATION Wideband Receiver 1n F VCCIF 3.3V or 5V 1n F 150n H IF+ CT RF 700MHz TO 915MHz 5.6p...