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ADL5380ACPZ-R7 Datasheet(PDF) 1 Page - Analog Devices |
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ADL5380ACPZ-R7 Datasheet(HTML) 1 Page - Analog Devices |
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1 / 36 page  400 MHz to 6 GHz Quadrature Demodulator ADL5380 Rev. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2009 Analog Devices, Inc. All rights reserved. FEATURES Operating RF and LO frequency: 400 MHz to 6 GHz Input IP3 30 dBm @ 900 MHz 28 dBm @1900 MHz Input IP2: >65 dBm @ 900 MHz Input P1dB (IP1dB): 11.6 dBm @ 900 MHz Noise figure (NF) 10.9 dB @ 900 MHz 11.7 dB @ 1900 MHz Voltage conversion gain: ~7 dB Quadrature demodulation accuracy @ 900 MHz Phase accuracy: ~0.2° Amplitude balance: ~0.07 dB Demodulation bandwidth: ~390 MHz Baseband I/Q drive: 2 V p-p into 200 Ω Single 5 V supply APPLICATIONS Cellular W-CDMA/GSM/LTE Microwave point-to-(multi)point radios Broadband wireless and WiMAX FUNCTIONAL BLOCK DIAGRAM RFIN RFIP ENBL ADJ QUADRATURE PHASE SPLITTER ADL5380 V2I BIAS LOIP LOIN IHI ILO QHI QLO Figure 1. GENERAL DESCRIPTION The ADL5380 is a broadband quadrature I-Q demodulator that covers an RF/IF input frequency range from 400 MHz to 6 GHz. With a NF = 10.9 dB, IP1dB = 11.6 dBm, and IIP3 = 29.7 dBm @ 900 MHz, the ADL5380 demodulator offers outstanding dynamic range suitable for the demanding infrastructure direct-conversion requirements. The differential RF inputs provide a well-behaved broadband input impedance of 50 Ω and are best driven from a 1:1 balun for optimum performance. Excellent demodulation accuracy is achieved with amplitude and phase balances of ~0.07 dB and ~0.2°, respectively. The demodulated in-phase (I) and quadrature (Q) differential outputs are fully buffered and provide a voltage conversion gain of ~7 dB. The buffered baseband outputs are capable of driving a 2 V p-p differential signal into 200 Ω. The fully balanced design minimizes effects from second-order distortion. The leakage from the LO port to the RF port is <−50 dBm. Differential dc offsets at the I and Q outputs are typically <20 mV. Both of these factors contribute to the excellent IIP2 specification, which is >65 dBm. The ADL5380 operates off a single 4.75 V to 5.25 V supply. The supply current is adjustable by placing an external resistor from the ADJ pin to either the positive supply, VS, (to increase supply current and improve IIP3) or to ground (which decreases supply current at the expense of IIP3). The ADL5380 is fabricated using the Analog Devices, Inc., advanced silicon-germanium bipolar process and is available in a 24-lead exposed paddle LFCSP. |
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