50 MHz to 2200 MHz Quadrature Modulator with Integrated Detector and VVA ADL5386 In addition, the ADL5386 incorporates a standalone FEATURES logarithmic power detector, as well as a voltage variable Output frequency range: 50 MHz to 2200 MHz attenuator (VVA). The attenuator has its own separate input and 1 dB output compression: 11 dBm 350 MHz output pins for easy cascading with filters and buffer amplifiers. Noise floor: 160 dBm/Hz 350 MHz The wide dynamic range of the power detector and VVA provides Sideband suppression: 46 dBc 350 MHz flexibility in the choice of the signal monitoring point in the Carrier feedthrough: 38 dBm 350 MHz transmitter system. 30 dB of linear AGC dynamic range 350 MHz Single supply: 4.75 V to 5.5 V The wide baseband input bandwidth of 700 MHz allows for 40-lead, Pb-free LFCSP VQ with exposed paddle either baseband drive or a drive from a complex IF signal. Typical applications are in IF or direct-to-RF radio-link transmitters, cable modem termination systems, broadband APPLICATIONS wireless access systems, and cellular infrastructure equipment. Radio-link infrastructures The ADL5386 takes signals from two differential baseband inputs Cable modem termination systems and modulates them onto two carriers in quadrature with each Wireless/cellular infrastructure systems other. The two internal carriers are derived from a single-ended, Wireless local loops external local oscillator (LO) input signal at twice the frequency WiMAX/broadband wireless access systems as the desired output. The output amplifier is designed to drive a 50 load. GENERAL DESCRIPTION The ADL5386 consists of two die, one fabricated using the The ADL5386 is a quadrature modulator with unmatched Analog Devices, Inc., advanced SiGe bipolar process, and the other integration levels for low intermediate frequency (IF) and radio using an external GaAs process. The ADL5386 is packaged in a frequency (RF) transmitters within broadband wireless access 40-lead, Pb-free LFCSP VQ with an exposed paddle. Performance systems, microwave radio links, cable modem termination is specified over the 40C to +85C range. A Pb-free evaluation systems, and cellular infrastructure equipment. The ADL5386 board is also available. operates over a frequency range of 50 MHz to 2200 MHz. Its excellent phase accuracy and amplitude balance supports high data rate, complex modulation for next-generation communication infrastructure equipment. FUNCTIONAL BLOCK DIAGRAM VPOS NC VPOS ENBL MODOUT ATTI 38 37 36 35 23 22 21 24 10 12 9 25 IBBP 26 IBBN IQ MOD BIAS 17 ATTCM 14 ATTCM 15dB LOIP 33 QUADRATURE PHASE 20 ATTO LOIN 34 SPLITTER ADL5386 6 VREF QBBN 29 IV 7 VDET/VCTL 30 QBBP 4 CLPF LOG DETECTOR TEMPERATURE SENSOR V 3 VSET I 8 12 39 511 13 15 16 18 19 27 28 31 32 40 TEMP INLO INHI TADJ COMM Figure 1. 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Trademarks and registered trademarks are the property of their respective owners. 07664-001ADL5386 TABLE OF CONTENTS Features .............................................................................................. 1 Open-Loop Power Control Mode ............................................ 21 Applications ....................................................................................... 1 Power Supply and Grounding .................................................. 22 General Description ......................................................................... 1 Device Enable and Disable ........................................................ 22 Functional Block Diagram .............................................................. 1 Baseband Inputs ......................................................................... 22 Revision History ............................................................................... 2 LO Input ...................................................................................... 22 Specif icat ions ..................................................................................... 3 AGC Mode .................................................................................. 22 Typical Input and Output Impedances ...................................... 8 Setting the TADJ Resistor .......................................................... 24 Absolute Maximum Ratings ............................................................ 9 Using the Detector in Standalone Measurement Mode ........ 25 ESD Caution .................................................................................. 9 DAC Modulator Interfacing ..................................................... 25 Pin Configuration and Function Descriptions ........................... 10 Spectral Products from Harmonic Mixing ............................. 27 Typical Performance Characteristics ........................................... 12 LO Generation Using PLLs ....................................................... 27 Modulator .................................................................................... 12 Transmit DAC Options ............................................................. 28 Voltage Variable Attentuator ..................................................... 16 Modulator/Demodulator Options ........................................... 28 Detector ....................................................................................... 17 Evaluation Board ............................................................................ 29 Closed-Loop AGC Mode........................................................... 18 Characterization Setup .................................................................. 31 Circuit Description ......................................................................... 19 SSB Setup ..................................................................................... 31 O ver vie w ...................................................................................... 19 Detector Setup ............................................................................ 31 Quadrature Modulator Section ................................................ 19 VVA S-Paramters Setup ............................................................. 32 Logarithmic Detector ................................................................. 20 VVA Intermodulation Test Setup ............................................. 32 Voltage Variable Attenuator (VVA) ......................................... 20 Outline Dimensions ....................................................................... 33 Basic Connections .......................................................................... 21 Ordering Guide .......................................................................... 33 REVISION HISTORY 1/09Revision 0: Initial Version Rev. 0 Page 2 of 36