2300 MHz to 3000 MHz Quadrature Modulator Data Sheet ADL5373 FEATURES FUNCTIONAL BLOCK DIAGRAM Output frequency range: 2300 MHz to 3000 MHz IBBP Modulation bandwidth: >500 MHz (3 dB) IBBN Output third-order intercept: 26 dBm 2500 MHz 1 dB output compression: 13.8 dBm 2500 MHz Noise floor: 157.1 dBm/Hz 2500 MHz LOIP QUADRATURE PHASE VOUT Sideband suppression: 57 dBc 2500 MHz SPLITTER LOIN Carrier feedthrough: 32 dBm 2500 MHz Single supply: 4.75 V to 5.25 V 24-lead LFCSP QBBN APPLICATIONS QBBP WiMAX/broadband wireless access systems Figure 1. Satellite modems GENERAL DESCRIPTION The ADL5373 supports a frequency of operation from 2300 MHz The ADL5373 accepts two differential baseband inputs that are to 3000 MHz and is a pin-compatible member of the fixed gain mixed with a local oscillator (LO) to generate a single-ended quadrature modulator (F-MOD) family designed for use from output. 300 MHz to 4000 MHz. The ADL5373 provides excellent phase The ADL5373 is fabricated using the Analog Devices, Inc. accuracy and amplitude balance enabling high performance advanced silicon-germanium bipolar process. It is available intermediate frequency or direct radio frequency modulation in a 24-lead, exposed paddle, Pb-free LFCSP. Performance is for communications systems. specified over a 40C to +85C temperature range. A Pb-free The ADL5373 provides a >500 MHz, 3 dB baseband bandwidth, evaluation board is available. making it ideally suited for use in broadband zero IF or low IF-to-RF applications and in broadband digital predistortion transmitters. Rev. B 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. Trademarks and registered trademarks are the property of their respective owners. Technical Support www.analog.com 06664-001ADL5373 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 RF Output .................................................................................... 12 Applications ....................................................................................... 1 Optimization ............................................................................... 13 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 14 General Description ......................................................................... 1 DAC Modulator Interfacing ..................................................... 14 Revision History ............................................................................... 2 Limiting the AC Swing .............................................................. 14 Specifications ..................................................................................... 3 Filtering ........................................................................................ 14 Absolute Maximum Ratings ............................................................ 5 Using the AD9779 Auxiliary DAC for Carrier Feedthrough Nulling ......................................................................................... 15 ESD Caution .................................................................................. 5 WiMAX Operation .................................................................... 15 Pin Configuration and Function Descriptions ............................. 6 LO Generation Using PLLs ....................................................... 16 Typical Performance Characteristics ............................................. 7 Transmit DAC Options ............................................................. 16 Theory of Operation ...................................................................... 11 Modulator/Demodulator Options ........................................... 16 Circuit Description..................................................................... 11 Evaluation Board ............................................................................ 17 Basic Connections .......................................................................... 12 Characterization Setup .................................................................. 18 Power Supply and Grounding ................................................... 12 Outline Dimensions ....................................................................... 20 Baseband Inputs.......................................................................... 12 Ordering Guide .......................................................................... 20 LO Input ...................................................................................... 12 REVISION HISTORY Changes to Figure 3, Figure 4, and Figure 6 to Figure 8 .............. 7 4/16Rev. A to Rev. B Changes to Figure 9 to Figure 14 ..................................................... 8 Changes to Figure 2 and Table 3 ..................................................... 6 Changes to Figure 15 to Figure 20 ................................................... 9 Changes to Figure 25 ...................................................................... 12 Changes to Figure 21 to Figure 23 ................................................ 10 Changes to LO Generation Using PLLs Section, Table 5, and Changes to Optimization Section and Figure 27 ....................... 13 Table 7 .............................................................................................. 16 Changes to Figure 35 ...................................................................... 15 Changes to Figure 37 ...................................................................... 17 Changes to WiMAX Operation Section and Figure 36 ............. 16 Updated Outline Dimensions ....................................................... 20 Changes to Evaluation Board Section.......................................... 17 Changes to Ordering Guide .......................................................... 20 Changes to Characterization Setup Section ................................ 18 2/08Rev. 0 to Rev. A 6/07Revision 0: Initial Version Changes to Features and General Description ............................. 1 Changes to Table 1 ............................................................................ 3 Changes to Table 2 ............................................................................ 5 Rev. B Page 2 of 20