500 MHz to 1500 MHz Quadrature Modulator Data Sheet ADL5371 FEATURES FUNCTIONAL BLOCK DIAGRAM Output frequency range: 500 MHz to 1500 MHz IBBP Modulation bandwidth: >500 MHz (3 dB) IBBN 1 dB output compression: 14.4 dBm 900 MHz Noise floor: 158.6 dBm/Hz 915 MHz LOIP QUADRATURE Sideband suppression: 55 dBc 900 MHz PHASE VOUT SPLITTER Carrier feedthrough: 50 dBm 900 MHz LOIN Single supply: 4.75 V to 5.25 V 24-lead LFCSP QBBN APPLICATIONS QBBP Cellular communication systems at 900 MHz CDMA2000/GSM Figure 1. WiMAX/broadband wireless access systems Cable communication equipment Satellite modems GENERAL DESCRIPTION The ADL5371 is a member of the fixed-gain quadrature modulator The ADL5371 accepts two differential baseband inputs and (F-MOD) family designed for use from 500 MHz to 1500 MHz. a single-ended local oscillator (LO) and generates a single- Its excellent phase accuracy and amplitude balance enable high ended output. performance intermediate frequency or direct radio frequency The ADL5371 is fabricated using the Analog Devices, Inc. modulation for communication systems. advanced silicon-germanium bipolar process. It is available in a The ADL5371 provides a >500 MHz, 3 dB baseband bandwidth, 24-lead, exposed-paddle, Pb-free, LFCSP. Performance is specified making it ideally suited for use in broadband zero IF or low IF- over a 40C to +85C temperature range. A Pb-free evaluation to-RF applications and in broadband digital predistortion board is available. transmitters. Rev. 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Technical Support www.analog.com 06510-001ADL5371 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 RF Output .................................................................................... 11 Applications ....................................................................................... 1 Optimization ............................................................................... 12 Functional Block Diagram .............................................................. 1 Applications Information .............................................................. 13 General Description ......................................................................... 1 DAC Modulator Interfacing ..................................................... 13 Revision History ............................................................................... 2 Limiting the AC Swing .............................................................. 13 Specifications ..................................................................................... 3 Filtering ........................................................................................ 13 Absolute Maximum Ratings ............................................................ 4 Using the AD9779 Auxiliary DAC for Carrier Feedthrough Nulling ......................................................................................... 14 ESD Caution .................................................................................. 4 GSM Operation .......................................................................... 14 Pin Configuration and Function Descriptions ............................. 5 LO Generation Using PLLs ....................................................... 15 Typical Performance Characteristics ............................................. 6 Transmit DAC Options ............................................................. 15 Theory of Operation ...................................................................... 10 Modulator/Demodulator Options ........................................... 15 Circuit Description..................................................................... 10 Evaluation Board ............................................................................ 16 Basic Connections .......................................................................... 11 Characterization Setup .................................................................. 17 Power Supply and Grounding ................................................... 11 Outline Dimensions ....................................................................... 19 Baseband Inputs.......................................................................... 11 Ordering Guide .......................................................................... 19 LO Input ...................................................................................... 11 REVISION HISTORY 4/16Rev. 0 to Rev. A Updated Outline Dimensions ....................................................... 19 Changes to Figure 2 and Table 3 ..................................................... 5 Changes to Ordering Guide .......................................................... 19 Change to Figure 23 ....................................................................... 11 Changes to LO Generation Using PLLs Section, Table 5, and 1/07Revision 0: Initial Version Table 7 .............................................................................................. 15 Change to Figure 34 ....................................................................... 16 Rev. A Page 2 of 20