LTC5549 Datasheet | Linear Technology

Features nn Upconversion or Downconversion nn High IIP3: +28.2d Bm at 5.8GHz +22.8d Bm at 12GHz nn 8.0d B Conversion Loss at 5.8GHz nn +14.3d Bm Input P1d B at 5.8GHz nn Integrated LO Buffer: 0d Bm LO Drive nn Bypassable Integrated LO Frequency Doubler nn Low LO-RF Leakage: <- 30d Bm nn 50Ω Single-Ended RF, LO and IF Ports nn 3.3V/115m A Supply nn Fast Turn ON/OFF for TDD Operation nn 2mm × 3mm, 12-Lead QFN Package Applications nn Microwave Transceivers nn Wireless Backhaul nn Point-to-Point Microwave nn Phased-Array Antennas nn C, X and Ku Band RADAR nn Test Equipment nn Satellite MODEMs LTC5549 2GHz to 14GHz Microwave Mixer with Integrated LO Frequency Doubler Description The LTC®5549 is a general purpose passive doublebalanced mixer that can be used for upconversion or downconversion. The RF port is designed for the 2GHz to 14GHz band and the IF port is optimized for 500MHz to 6GHz operation. An integrated LO buffer amplifier supports LO frequencies from 1GHz to 12GHz, requiring only 0d Bm LO power. The LTC5549 delivers high IIP3 and input P1d B with low power consumption. An internal LO frequency doubler can be enabled by a CMOS-patible digital control pin, allowing operation with a lower, one-half LO input frequency. This allows the mixer’s LO port to be used with existing synthesizers, such as the LTC6946 and LTC6948 family. The LTC5549’s high level of integration minimizes the total solution cost, board space and system level variation with its 2mm × 3mm package size. 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 LNA DUPLEXER RF IF LO RX IFOUT RX LO TX LO LO RF IF TX IFIN 5549 TA01a CONVERSION LOSS (d B), IIP3 (d Bm) Conversion Loss and IIP3 (Low Side LO, IF = 1890MHz) 28 IIP3 26 DOWNMIXING UPMIXING 12 10 CONVERSION LOSS 6 3 4 5 6 7 8 9 10 11 12...