300 MHz to 1000 MHz Quadrature Modulator Data Sheet ADL5370 FEATURES FUNCTIONAL BLOCK DIAGRAM Output frequency range: 300 MHz to 1000 MHz IBBP Modulation bandwidth: >500 MHz (3 dB) IBBN 1 dB output compression: 11 dBm 450 MHz Noise floor: 160 dBm/Hz LOIP QUADRATURE Sideband suppression: 41 dBc 450 MHz PHASE VOUT SPLITTER Carrier feedthrough: 50 dBm 450 MHz LOIN Single supply: 4.75 V to 5.25 V 24-lead LFCSP package QBBN APPLICATIONS QBBP Cellular communication systems at 450 MHz Figure 1. CDMA2000/GSM WiMAX/broadband wireless access systems Cable communication equipment Satellite modems GENERAL DESCRIPTION The ADL5370 is the first in the fixed-gain quadrature modulator The ADL5370 accepts two differential baseband inputs and a (F-MOD) family designed for use from 300 MHz to 1000 MHz. single-ended LO and generates a single-ended 50 output. Its excellent phase accuracy and amplitude balance enable high The ADL5370 is fabricated using the Analog Devices, Inc. performance intermediate frequency or direct radio frequency advanced silicon-germanium bipolar process. It is available in a modulation for communication systems. 24-lead, exposed-paddle, Pb-free, LFCSP package. Performance is The ADL5370 provides a greater than 500 MHz, 3 dB baseband specified over a 40C to +85C temperature range. A Pb-free bandwidth, making it ideally suited for use in broadband zero evaluation board is available. IF or low IF-to-RF applications and in broadband digital predistortion transmitters. Rev. A 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 20062016 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 06117-001ADL5370 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 DAC Modulator Interfacing ..................................................... 13 Applications ....................................................................................... 1 Limiting the AC Swing .............................................................. 13 Functional Block Diagram .............................................................. 1 Filtering ........................................................................................ 13 General Description ......................................................................... 1 Using the AD9779 Auxiliary DAC for Carrier Feedthrough Nulling ......................................................................................... 14 Revision History ............................................................................... 2 GSM Operation .......................................................................... 14 Specifications ..................................................................................... 3 LO Generation Using PLLs ....................................................... 15 Absolute Maximum Ratings ............................................................ 4 Transmit DAC Options ............................................................. 15 ESD Caution .................................................................................. 4 Modulator/Demodulator Options ........................................... 15 Pin Configuration and Function Descriptions ............................. 5 Evaluation Board ............................................................................ 16 Typical Performance Characteristics ............................................. 6 Characterization Setup .................................................................. 17 Theory of Operation ...................................................................... 10 Outline Dimensions ....................................................................... 19 Circuit Description..................................................................... 10 Ordering Guide .......................................................................... 19 Basic Connections .......................................................................... 11 Optimization ............................................................................... 12 Applications Information .............................................................. 13 REVISION HISTORY 4/16Rev. 0 to Rev. A Changes to Figure 36 ...................................................................... 16 Changes to Figure 2 and Table 3 ..................................................... 5 Updated Outline Dimensions ....................................................... 19 Changes to Figure 25 ...................................................................... 11 Changes to Ordering Guide .......................................................... 19 Changes to LO Generation Using PLLs Section, Table 5, and Table 7 .............................................................................................. 15 10/06Revision 0: Initial Version Rev. A Page 2 of 20