1 MHz to 10 GHz, 62 dB Dual Log Detector/Controller Data Sheet ADL5519 FEATURES FUNCTIONAL BLOCK DIAGRAM Wide bandwidth: 1 MHz to 10 GHz Dual-channel and channel difference output ports 24 23 22 21 20 19 18 17 Integrated accurate scaled temperature sensor TEMP ADL5519 62 dB dynamic range (3 dB) >50 dB with 1 dB up to 8 GHz INHA 25 16 NC o o Stability over temperature: 0.5 dB (40 C to +85 C) INLA 26 15 OUTA CHANNEL A Low noise detector/controller outputs LOG DETECTOR COMR 27 14 FBKA Pulse response time: 6 ns/8 ns (fall time/rise time) Supply operation: 3.3 V to 5.5 V 60 mA PWDN 28 13 OUTP OUTA Fabricated using high speed SiGe process OUTB COMR 29 12 OUTN Small footprint, 5 mm 5 mm, 32-lead LFCSP COMR 30 11 FBKB o o Operating temperature range: 40 C to +125 C CHANNEL B LOG DETECTOR INLB 31 10 OUTB APPLICATIONS INHB 32 9 NC RF transmitter power amplifier linearization and gain/power control BIAS Power monitoring in radio link transmitters 1 2 3 4 5 6 7 8 Dual-channel wireless infrastructure radios Antenna VSWR monitor Figure 1. RSSI measurement in base stations, WLAN, WiMAX, radar GENERAL DESCRIPTION The ADL5519 is a dual-demodulating logarithmic amplifier that temperature conditions. A supply of 3.3 V to 5.5 V is required to power the device. Current consumption is typically 60 mA, incorporates two AD8317s. It can accurately convert an RF input signal into a corresponding decibel-scaled output. The and it decreases to less than 1 mA when the device is disabled. ADL5519 provides accurately scaled, independent, logarithmic The device is capable of supplying four log amp measurements output voltages for both RF measurement channels. The device simultaneously. Linear-in-dB measurements are provided at has two additional output ports, OUTP and OUTN, that OUTA and OUTB with conveniently scaled slopes of 22 mV/dB. provide the measured differences between the OUTA and The log amp difference between OUTA and OUTB is available OUTB channels. The on-chip channel matching makes the log as differential or single-ended signals at OUTP and OUTN. An amp outputs insensitive to temperature and process variations. optional voltage applied to VLVL provides a common-mode The temperature sensor pin provides a scaled voltage that is reference level to offset OUTP and OUTN above ground. The proportional to the temperature over the operating temperature broadband output pins can support many system solutions. range of the device. Any of the ADL5519 output pins can be configured to provide The ADL5519 maintains accurate log conformance for signals a control voltage to a variable gain amplifier (VGA). Special from 1 MHz to 8 GHz and provides useful operation to 10 GHz. attention has been paid to minimize the broadband noise of the The 3 dB dynamic range is typically 62 dB and has a 1 dB output pins so that they can be used for controller applications. dynamic range of >50 dB (re: 50 ). The ADL5519 has a response The ADL5519 is fabricated on a SiGe bipolar IC process and is time of 6 ns/8 ns (fall time/rise time) that enables RF burst detec- available in a 5 mm 5 mm, 32-lead LFCSP with an operating tion to a pulse rate of greater than 50 MHz. The device provides temperature range of 40C to +125C. unprecedented logarithmic intercept stability vs. ambient Rev. C 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. Tel: 781.329.4700 20082020 Analog Devices, Inc. All rights reserved. No license is granted by implication or otherwise under any patent or patent rights of Analog Technical Support www.analog.com Devices. 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COMR COMR COMR COMR VPSB VPSA ADJB ADJA VPSR VREF VLVL TEMP CLPB CLPA VSTA VSTB 06198-001ADL5519 Data Sheet TABLE OF CONTENTS Basis for Error Calculations ...................................................... 23 Features .............................................................................................. 1 Device Calibration ..................................................................... 24 Applications ...................................................................................... 1 Adjusting Accuracy Through Choice of Calibration Points ..... 24 Functional Block Diagram .............................................................. 1 Temperature Compensation Adjustment .............................. 25 General Description ......................................................................... 1 Altering the Slope ....................................................................... 26 Revision History ............................................................................... 2 Channel Isolation ....................................................................... 26 Specifications .................................................................................... 3 Output Filtering ......................................................................... 27 Absolute Maximum Ratings ........................................................... 9 Package Considerations ............................................................ 27 ESD Caution.................................................................................. 9 Operation Above 8 GHz ........................................................... 27 Pin Configuration and Function Descriptions .......................... 10 Applications Information ............................................................. 28 Typical Performance Characteristics ........................................... 11 Measurement Mode ................................................................... 28 Theory of Operation ...................................................................... 19 Controller Mode ......................................................................... 28 Using the ADL5519 ........................................................................ 20 Automatic Gain Control ........................................................... 30 Basic Connections ...................................................................... 20 Gain-Stable Transmitter/Receiver ........................................... 32 Input Signal Coupling ............................................................... 20 Measuring VSWR ...................................................................... 34 Temperature Sensor Interface .................................................. 22 Evaluation Board ............................................................................ 36 VREF Interface ........................................................................... 22 Configuration Options .............................................................. 36 Power-Down Interface .............................................................. 22 Evaluation Board Schematic and Artwork ............................. 37 Setpoint InterfaceVSTA, VSTB ............................................ 22 Outline Dimensions ....................................................................... 39 Output InterfaceOUTA, OUTB ........................................... 22 Ordering Guide .......................................................................... 39 Difference OutputOUTP, OUTN ........................................ 23 Description of Characterization ............................................... 23 REVISION HISTORY 8/2020Rev. B to Rev. C 4/2009Rev. 0 to Rev. A Changes to Figure 38 ..................................................................... 16 Changes to Table 5 ......................................................................... 36 Changes to Figure 71 ..................................................................... 35 Changes to Figure 72 ..................................................................... 37 9/2017Rev. A to Rev. B 1/2008Revision 0: Initial Version Changes to Figure 2 ........................................................................ 10 Updated Outline Dimensions ....................................................... 39 Changes to Ordering Guide .......................................................... 39 Rev. C Page 2 of 39