30 MHz to 2 GHz Quadrature Demodulator Data Sheet ADL5387 FEATURES FUNCTIONAL BLOCK DIAGRAM 24 23 22 21 20 19 Operating RF frequency CMRF CMRF RFIP RFIN CMRF VPX 30 MHz to 2 GHz 1 VPA VPB 18 LO input at 2 f LO 60 MHz to 4 GHz 2 COM VPB 17 Input IP3: 31 dBm at 900 MHz 3 BIAS QHI 16 Input IP2: 62 dBm at 900 MHz Input P1dB: 13 dBm at 900 MHz DIVIDE-BY-2 4 VPL QLO 15 PHASE SPLITTER Noise figure (NF) 12.0 dB at 140 MHz 5 VPL IHI 14 14.7 dB at 900 MHz Voltage conversion gain > 4 dB 6 VPL ILO 13 CML LOIP LOIN CML CML COM Quadrature demodulation accuracy 78 9 10 11 12 Phase accuracy ~0.4 Figure 1. Amplitude balance ~0.05 dB Demodulation bandwidth ~240 MHz Baseband I/Q drive 2 V p-p into 200 Single 5 V supply APPLICATIONS QAM/QPSK RF/IF demodulators W-CDMA/CDMA/CDMA2000/GSM Microwave point-to-(multi)point radios Broadband wireless and WiMAX Broadband CATVs GENERAL DESCRIPTION The ADL5387 is a broadband quadrature I/Q demodulator that The fully balanced design minimizes effects from second-order covers an RF/IF input frequency range from 30 MHz to 2 GHz. distortion. The leakage from the LO port to the RF port is With a NF = 13.2 dB, IP1dB = 12.7 dBm, and IIP3 = 32 dBm at <70 dBc. Differential dc-offsets at the I and Q outputs are 450 MHz, the ADL5387 demodulator offers outstanding dynamic <10 mV. Both of these factors contribute to the excellent IIP2 range suitable for the demanding infrastructure direct-conversion specifications > 60 dBm. requirements. The differential RF/IF inputs provide a well- The ADL5387 operates off a single 4.75 V to 5.25 V supply. The behaved broadband input impedance of 50 and are best supply current is adjustable with an external resistor from the driven from a 1:1 balun for optimum performance. BIAS pin to ground. Ultrabroadband operation is achieved with a divide-by-2 method The ADL5387 is fabricated using the Analog Devices, Inc., for local oscillator (LO) quadrature generation. Over a wide advanced silicon-germanium bipolar process and is available in range of LO levels, excellent demodulation accuracy is a 24-lead exposed paddle LFCSP. achieved with amplitude and phase balances ~0.05 dB and ~0.4, respectively. The demodulated in-phase (I) and quadrature (Q) differential outputs are fully buffered and provide a voltage conversion gain of >4 dB. The buffered baseband outputs are capable of driving a 2 V p-p differential signal into 200 . Rev. C Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. rights of third parties that may result from its use. Specifications subject to change without notice. No Tel: 781.329.4700 20072016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. 06764-001ADL5387 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Mixers .......................................................................................... 15 Applications ....................................................................................... 1 Emitter Follower Buffers ........................................................... 15 Functional Block Diagram .............................................................. 1 Bias Circuit .................................................................................. 15 General Description ......................................................................... 1 Applications Information .............................................................. 16 Revision History ............................................................................... 2 Basic Connections ...................................................................... 16 Specifications ..................................................................................... 3 Power Supply ............................................................................... 16 Absolute Maximum Ratings ............................................................ 5 Local Oscillator (LO) Input ...................................................... 16 ESD Caution .................................................................................. 5 RF Input ....................................................................................... 17 Pin Configuration and Function Descriptions ............................. 6 Baseband Outputs ...................................................................... 17 Typical Performance Characteristics ............................................. 7 Error Vector Magnitude (EVM) Performance ....................... 18 Distributions for fRF = 140 MHz ............................................... 11 Low IF Image Rejection ............................................................. 19 Distributions for f = 450 MHz ............................................... 12 Example Baseband Interface ..................................................... 19 RF Distributions for f = 900 MHz ............................................... 13 Characterization Setups ................................................................. 22 RF Distributions for f = 1900 MHz ............................................. 14 Evaluation Board ............................................................................ 24 RF Circuit Description ......................................................................... 15 Outline Dimensions ....................................................................... 27 LO Interface................................................................................. 15 Ordering Guide .......................................................................... 27 V-to-I Converter ......................................................................... 15 REVISION HISTORY 8/2016Rev. B to Rev. C 5/2013Rev. 0 to Rev. A Changed CP-24-2 to CP-24-14 .................................... Throughout Changed Minimum Operating RF Frequency from 50 MHz to Updated Outline Dimensions ....................................................... 27 30 MHz (Throughout) ...................................................................... 1 Changes to Ordering Guide .......................................................... 27 Changed Minimum LO Input at 2 fLO from 100 MHz to 60 MHz (Throughout) ...................................................................... 1 10/2013Rev. A to Rev. B Added Dynamic Performance RF = 30 MHz Parameters ....... 3 Added Figure 4, Figure 6, and Figure 8 Renumbered Changes to Local Oscillator (LO) Input Section ........................ 15 Sequentially ....................................................................................... 7 Changes to Table 4 .......................................................................... 24 Moved Figure 9, Added Figure 10 .................................................. 8 Updated Outline Dimensions ....................................................... 26 Changes to Figure 25 ...................................................................... 11 Changes to Ordering Guide .......................................................... 26 Changes to Figure 31 ...................................................................... 12 Updated Outline Dimensions ....................................................... 27 10/2007Revision 0: Initial Version Changes to Ordering Guide .......................................................... 27 Rev. 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