ADL5382-EVALZ Analog Devices

700 MHz to 2.7 GHz Quadrature Demodulator Data Sheet ADL5382 FEATURES FUNCTIONAL BLOCK DIAGRAM CMRF CMRF RFIP RFIN CMRF VPX Operating RF and LO frequency: 700 MHz to 2.7 GHz 24 23 22 21 20 19 Input IP3 33.5 dBm 900 MHz 1 18 VPA ADL5382 VPB 30.5 dBm 1900 MHz BIAS COM 2 17 VPB GEN Input IP2: >70 dBm 900 MHz Input P1dB: 14.7 dBm 900 MHz BIAS 3 16 QHI Noise figure (NF) 0 14.0 dB 900 MHz VPL 4 15 QLO 90 15.6 dB 1900 MHz VPL 5 14 IHI Voltage conversion gain: ~4 dB Quadrature demodulation accuracy VPL 6 13 ILO Phase accuracy: ~0.2 Amplitude balance: ~0.05 dB 7 8 9 10 11 12 Demodulation bandwidth: ~370 MHz CML LOIP LOIN CML CML COM Baseband I/Q drive: 2 V p-p into 200 Figure 1. Single 5 V supply APPLICATIONS Cellular W-CDMA/CDMA/CDMA2000/GSM Microwave point-to-(multi)point radios Broadband wireless and WiMAX GENERAL DESCRIPTION The ADL5382 is a broadband quadrature I-Q demodulator that The fully balanced design minimizes effects from second-order covers an RF input frequency range from 700 MHz to 2.7 GHz. distortion. The leakage from the LO port to the RF port is With a NF = 14 dB, IP1dB = 14.7 dBm, and IIP3 = 33.5 dBm at <65 dBc. Differential dc offsets at the I and Q outputs are typically 900 MHz, the ADL5382 demodulator offers outstanding dynamic <10 mV. Both of these factors contribute to the excellent IIP2 range suitable for the demanding infrastructure direct-conversion specifications which is >60 dBm. requirements. The differential RF inputs provide a well-behaved The ADL5382 operates off a single 4.75 V to 5.25 V supply. The broadband input impedance of 50 and are best driven from a supply current is adjustable with an external resistor from the 1:1 balun for optimum performance. BIAS pin to ground. Excellent demodulation accuracy is achieved with amplitude and The ADL5382 is fabricated using the Analog Devices, Inc., phase balances ~0.05 dB and ~0.2, respectively. The demodulated advanced Silicon-Germanium bipolar process and is available in-phase (I) and quadrature (Q) differential outputs are fully in a 24-lead exposed paddle LFCSP. 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. A 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 www.analog.com license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 20082012 Analog Devices, Inc. All rights reserved. 07208-001ADL5382 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Emitter Follower Buffers ........................................................... 13 Applications ....................................................................................... 1 Bias Circuit .................................................................................. 13 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 14 General Description ......................................................................... 1 Basic Connections ...................................................................... 14 Revision History ............................................................................... 2 Power Supply ............................................................................... 14 Specifications ..................................................................................... 3 Local Oscillator (LO) Input ...................................................... 14 Absolute Maximum Ratings ............................................................ 5 RF Input ....................................................................................... 15 ESD Caution .................................................................................. 5 Baseband Outputs ...................................................................... 15 Pin Configuration and Function Descriptions ............................. 6 Error Vector Magnitude (EVM) Performance ........................... 16 Typical Performance Characteristics ............................................. 7 Low IF Image Rejection ............................................................. 17 Distributions for fRF = 900 MHz ............................................... 10 Example Baseband Interface ..................................................... 17 Distributions for f = 1900 MHz ............................................. 11 Characterization Setups ................................................................. 21 RF Distributions for f = 2700 MHz ............................................. 12 Evaluation Board ............................................................................ 23 RF Circuit Description ......................................................................... 13 Outline Dimensions ....................................................................... 27 LO Interface................................................................................. 13 Ordering Guide .......................................................................... 27 V-to-I Converter ......................................................................... 13 Mixers........................................................................................... 13 REVISION HISTORY 5/12Rev. 0 to Rev. A Added JC = 3C/W to Table 2......................................................... 5 Added EPAD Note to Figure 2 ........................................................ 6 Updated Outline Dimensions ....................................................... 27 3/08Revision 0: Initial Version Rev. A Page 2 of 28