400 MHz to 6 GHz Broadband Quadrature Modulator Data Sheet ADL5375 FEATURES FUNCTIONAL BLOCK DIAGRAM Output frequency range: 400 MHz to 6 GHz IBBP ADL5375 1 dB output compression: 9.4 dBm from 450 MHz to 4 GHz Output return loss 12 dB from 450 MHz to 4.5 GHz IBBN Noise floor: 160 dBm/Hz at 900 MHz Sideband suppression: 50 dBc at 900 MHz Carrier feedthrough: 40 dBm at 900 MHz LOIP QUADRATURE PHASE RFOUT IQ3dB bandwidth: 750 MHz SPLITTER LOIN Baseband input bias level DSOP ADL5375-05: 500 mV ADL5375-15: 1500 mV QBBN Single supply: 4.75 V to 5.25 V 24-lead LFCSP VQ package QBBP Figure 1. APPLICATIONS Cellular communication systems GSM/EDGE, CDMA2000, W-CDMA, TD-SCDMA WiMAX/LTE broadband wireless access systems Satellite modems GENERAL DESCRIPTION The ADL5375 is a broadband quadrature modulator designed for broadband digital predistortion transmitters, and multiband operation from 400 MHz to 6 GHz. Its excellent phase accuracy radio designs. and amplitude balance enable high performance intermediate The ADL5375 accepts two differential baseband inputs and frequency or direct radio frequency modulation for commu- a single-ended LO. It generates a single-ended 50 output. nication systems. The two versions offer input baseband bias levels of 500 mV The ADL5375 features a broad baseband bandwidth, along (ADL5375-05) and 1500 mV (ADL5375-15). with an output gain flatness that varies no more than 1 dB The ADL5375 is fabricated using an advanced silicon-germanium from 450 MHz to 3.5 GHz. These features, coupled with a broad- bipolar process. It is available in a 24-lead, exposed paddle, lead- band output return loss of 12 dB, make the ADL5375 ideally free, LFCSP VQ package. Performance is specified over a 40C suited for broadband zero IF or low IF-to-RF applications, to +85C temperature range. A lead-free evaluation board is also available. Rev. D 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 20072014 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. 07052-001ADL5375 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 LO Input ...................................................................................... 20 Applications ....................................................................................... 1 RF Output .................................................................................... 20 Functional Block Diagram .............................................................. 1 Output Disable ............................................................................ 21 General Description ......................................................................... 1 Applications Information .............................................................. 22 Revision History ............................................................................... 2 Carrier Feedthrough Nulling .................................................... 22 Specifications ..................................................................................... 3 Sideband Suppression Optimization ....................................... 22 Absolute Maximum Ratings ............................................................ 7 Interfacing the ADF4350 PLL to the ADL5375 ..................... 23 ESD Caution .................................................................................. 7 DAC Modulator Interfacing ..................................................... 24 Pin Configuration and Function Descriptions ............................. 8 GSM/EDGE Operation ............................................................. 27 Typical Performance Characteristics ............................................. 9 W-CDMA Operation ................................................................. 28 ADL5375-05 .................................................................................. 9 LO Generation Using PLLs ....................................................... 29 ADL5375-15 ................................................................................ 14 Transmit DAC Options ............................................................. 29 Theory of Operation ...................................................................... 19 Modulator/Demodulator Options ........................................... 29 Circuit Description..................................................................... 19 Evaluation Board ............................................................................ 30 Basic Connections .......................................................................... 20 Characterization Setup .................................................................. 33 Power Supply and Grounding ................................................... 20 Outline Dimensions ....................................................................... 35 Baseband Inputs .......................................................................... 20 Ordering Guide .......................................................................... 35 REVISION HISTORY 6/14Rev. C to Rev. D Changes to Application Information Section ............................ 22 Changes to Evaluation Board Section.......................................... 30 Changes to Figure 2 .......................................................................... 8 Changes to Figure 80 ...................................................................... 34 Changes to Figure 13, Figure 14, and Figure 15 ......................... 10 Added Exposed Pad Notation to Outline Dimensions ............. 35 Changes to Figure 38, Figure 39, and Figure 40 ......................... 15 Changes to Table 9 .......................................................................... 31 11/08Rev. 0 to Rev. A Changes to Ordering Guide .......................................................... 35 Change AD9779 to AD9779A .......................................... Universal 7/13Rev. B to Rev. C Added Endnote, I/Q Input Bias Level and Absolute Voltage Level Parameters, Table 1 ................................................... 6 Changed CP-24-3 to CP-24-7 ........................................... Universal Added Absolute Voltage Level Parameter, Table 1 ........................ 6 9/11Rev. A to Rev. B 12/07Revision 0: Initial Version Changes to Features Section............................................................ 1 Replaced Table 1 ............................................................................... 3 Changes to Typical Performance Characteristics Section ........... 9 Updated Output Disable Section .................................................. 21 Rev. D Page 2 of 36