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LTC6948 Datasheet(PDF) 1 Page - Analog Devices |
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LTC6948 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 32 page  LTC5594 1 Rev A For more information www.analog.com Document Feedback TYPICAL APPLICATION FEATURES DESCRIPTION 300MHz to 9GHz High Linearity I/Q Demodulator with Wideband IF Amplifier Direct Conversion I/Q Receiver Gain, OIP3, and OIP2 vs Temperature (TC) (Unoptimized) n 5G Base Station Fronthaul/Backhaul Receivers n Military and Satellite Receivers n Point-to-Point Broadband Radios n High Linearity Direct Conversion I/Q SDR n Test Instrumentation n DPD Receivers n True Zero IF Demodulation n Wideband Input Matched from 500MHz to 9GHz n Wide IF Bandwidth: DC to 1GHz (1dB Flatness) n 37dB Image Rejection, Adjustable to 60dB n High Total OIP3: 37dBm at 5.8GHz n 58dBm OIP2 at 5.8GHz, Adjustable to 65dBm n Max Power Conversion Gain: 9.2dB at 5.8GHz n Single-Ended RF Input with On-Chip Transformer n User Adjustable DC Offset Null n Serial Interface n IF Amplifier Gain Adjustable in Eight Steps n IF Amplifier Shutdown/Enable n Low Power Shutdown Mode n Operating Temperature Range (TC): –40°C to 105°C n 32-Lead 5mm × 5mm QFN Package TheLTC®5594isadirectconversionquadraturedemodula- tor optimized for high linearity zero-IF and low-IF receiver applications in the 300MHz to 9GHz frequency range. The very wide IF bandwidth of more than 1GHz makes the LTC5594 particularly suited for demodulation of very wideband signals, especially in 5G fronthaul/backhaul receiver applications. The outstanding dynamic range of the LTC5594 makes the device suitable for demanding infrastructure direct conversion applications. Proprietary technology inside the LTC5594 provides the capability to optimize OIP2 to 65dBm, and achieve image rejection better than 60dB. The DC offset control function allows nulling of the DC offset at the A/D converter input, thereby optimizing the dynamic range of true zero-IF receivers that 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 IFoutputsoftheLTC5594aredesignedtointerfacedirectly with most common A/D converter input interfaces. The high OIP3 and high conversion gain of the device eliminate the need for additional amplifiers in the IF signal path. All registered trademarks and trademarks are the property of their respective owners. APPLICATIONS gm gm 0º 90º ADC ADC LNA LTC5594 fLO SPI IFIP IFIM IFQP IFQM RF 5594 TA01a 0 1 2 3 4 5 6 7 8 9 10 90 80 70 60 50 40 30 20 10 0 –10 RF FREQUENCY (GHz) I, –40°C I, 25°C I, 85°C I, 105°C Q, –40°C Q, 25°C Q, 85°C Q, 105°C OIP2 OIP3 GAIN 5594 TA01b |
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