LTC5594 300MHz to 9GHz High Linearity I/Q Demodulator with Wideband IF Amplifier FEATURES DESCRIPTION n True Zero IF Demodulation The LTC 5594 is a direct conversion quadrature demodula- n Wideband Input Matched from 500MHz to 9GHz tor optimized for high linearity zero-IF and low-IF receiver n Wide IF Bandwidth: DC to 1GHz (1dB Flatness) applications in the 300MHz to 9GHz frequency range. n 37dB Image Rejection, Adjustable to 60dB The very wide IF bandwidth of more than 1GHz makes n High Total OIP3: 37dBm at 5.8GHz the LTC5594 particularly suited for demodulation of very n 58dBm OIP2 at 5.8GHz, Adjustable to 65dBm wideband signals, especially in 5G fronthaul/backhaul n Max Power Conversion Gain: 9.2dB at 5.8GHz receiver applications. The outstanding dynamic range of n Single-Ended RF Input with On-Chip Transformer the LTC5594 makes the device suitable for demanding n User Adjustable DC Offset Null infrastructure direct conversion applications. Proprietary n Serial Interface technology inside the LTC5594 provides the capability n IF Amplifier Gain Adjustable in Eight Steps to optimize OIP2 to 65dBm, and achieve image rejection n IF Amplifier Shutdown/Enable better than 60dB. The DC offset control function allows n Low Power Shutdown Mode nulling of the DC offset at the A/D converter input, thereby n Operating Temperature Range (T ): 40C to 105C optimizing the dynamic range of true zero-IF receivers that C n 32-Lead 5mm 5mm QFN Package use DC-coupled IF signal paths. The wideband RF and LO input ports make it possible to cover all the major wireless infrastructure frequency bands using a single device. The APPLICATIONS IF outputs of the LTC5594 are designed to interface directly n 5G Base Station Fronthaul/Backhaul Receivers with most common A/D converter input interfaces. The n Military and Satellite Receivers high OIP3 and high conversion gain of the device eliminate n Point-to-Point Broadband Radios the need for additional amplifiers in the IF signal path. n High Linearity Direct Conversion I/Q SDR All registered trademarks and trademarks are the property of their respective owners. n Test Instrumentation n DPD Receivers Gain, OIP3, and OIP2 vs TYPICAL APPLICATION Temperature (T ) (Unoptimized) C Direct Conversion I/Q Receiver 90 80 OIP2 70 60 LTC5594 IFIP 50 g ADC m OIP3 40 IFIM 30 RF LNA 0 20 f LO GAIN 90 10 0 IFQP 10 g ADC m 0 1 2 3 4 5 6 7 8 9 10 SPI IFQM RF FREQUENCY (GHz) 5594 TA01b I, 40C Q, 40C I, 25C Q, 25C I, 85C Q, 85C 5594 TA01a I, 105C Q, 105C Rev A 1 Document Feedback For more information www.analog.com GAIN, OIP3, OIP2 (dB,dBm,dBm)LTC5594 ABSOLUTE MAXIMUM RATINGS PIN CONFIGURATION (Note 1) TOP VIEW V Supply Voltage (Note 23) ................... 0.3V to 5.5V CC OV , SDO Voltage (Note 20) ................... 0.3V to 3.8V DD 32 31 30 29 28 27 26 25 RF DC Voltage ..............................................1.5V to 2.0V GND 1 24 OV LOP, LOM DC Voltage ..................................2.1V to 2.8V DD TEMP 2 23 SCK IFIM, IFIP, IFQP, IFQM DC Voltage ............. 0.3V to 3.5V GND 3 22 SDI AIM, AIP, AQM, AQP RF 4 21 SDO 33 DC Voltage ........................... V 1.7V to V 1.2V CC CC GND GND 5 20 LOM MIM, MIP, MQM, MQP V 6 CM 19 LOP DC Voltage ........................... V 1.7V to V 1.2V EN 7 CC CC 18 V CC GND Voltage on Any Other Pin .......................... 0.3V to 5.5V 8 17 CSB LOP, LOM, RF Input Power (Note 19) .................+20dBm 9 10 11 12 13 14 15 16 Output Short Circuit Duration (Notes 16, 19) ... Indefinite Maximum Junction Temperature (T ) ............. 150C UH PACKAGE JMAX 32-LEAD (5mm 5mm) PLASTIC QFN Case Operating Temperature T = 150C, = 7.7C/W JC JMAX Range (T ) ......................................... 40C to 105C EXPOSED PAD (PIN 33) IS GND, MUST BE SOLDERED TO PCB C Storage Temperature Range .................. 65C to 150C ORDER INFORMATION LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE LTC5594IUH PBF LTC5594IUH TRPBF 5594 32-Lead (5mm 5mm) Plastic QFN 40C to 105C Consult ADI Marketing for parts specified with wider operating temperature ranges. Tape and reel specifications. Some packages are available in 500 unit reels through designated sales channels with TRMPBF suffix. Rev A 2 For more information www.analog.com MQP MIP MQM MIM DNC DNC AQM AIM AQP AIP DNC AMPD IFQM IFIM IFQP IFIP