Active Receive Mixer Low Frequency to 3.8 GHz Data Sheet AD8342 FEATURES FUNCTIONAL BLOCK DIAGRAM Broadband RF, LO, and IF ports Conversion gain: 3.7 dB VPDC PWDN EXRB COMM Noise figure: 12.2 dB 10 9 12 11 Input IP3: 22.7 dBm Input P1dB: 8.3 dBm COMM 13 BIAS 8 COMM LO drive: 0 dBm RFCM 14 7 IFOP Differential high impedance RF input port AD8342 Single-ended, 50 LO input port RFIN 15 6 IFOM Open-collector IF output port VPMX 16 5 COMM Single-supply operation: 5 V at 98 mA Power-down mode 1 2 3 4 Exposed pad LFCSP: 3 mm 3 mm VPLO LOCM LOIN COMM APPLICATIONS Figure 1. Cellular base station receivers ISM receivers Radio links RF instrumentation GENERAL DESCRIPTION The AD8342 is a high performance, broadband active mixer. It The open-collector differential outputs provide excellent balance is well suited for demanding receive channel applications that and can be used with a differential filter or IF amplifier, such as require wide bandwidth on all ports and very low intermodulation the AD8370, AD8375, AD8351, AD8352, or ADL5561. These distortion and noise figure. outputs can also be converted to a single-ended signal using a matching network or a balun transformer. The outputs are capable The AD8342 provides a typical conversion gain of 3.7 dB with of swinging 2 V p-p when biased to the VPOS supply rail. an RF frequency of 238 MHz. The integrated LO driver presents a 50 input impedance with a low LO drive level, helping to The AD8342 is fabricated on an Analog Devices, Inc., minimize the external component count. proprietary, high performance SiGe IC process. The AD8342 is available in a 16-lead LFCSP. It operates over a 40C to +85C The differential high impedance broadband RF port allows easy temperature range. An evaluation board is also available. interfacing to both active devices and passive filters. The RF input accepts input signals as large as 1.6 V p-p or 8 dBm (relative to 50 ) at P 1dB. 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. No Tel: 781.329.4700 20052016 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 05352-001AD8342 Data Sheet TABLE OF CONTENTS Features .............................................................................................. 1 Test Circuit ...................................................................................... 14 Applications ....................................................................................... 1 Theory of Operation ...................................................................... 15 Functional Block Diagram .............................................................. 1 AC Interfaces ................................................................................... 16 General Description ......................................................................... 1 IF Port .......................................................................................... 17 Revision History ............................................................................... 2 LO Considerations ..................................................................... 18 Specifications ..................................................................................... 3 High Frequency Applications ................................................... 19 AC Performance ........................................................................... 4 Applications Above 3 GHz ........................................................ 20 Absolute Maximum Ratings ............................................................ 5 Low Frequency Applications .................................................... 21 Junction to Board Thermal Impedance ..................................... 5 Evaluation Board ............................................................................ 22 ESD Caution .................................................................................. 5 Outline Dimensions ....................................................................... 25 Pin Configuration and Function Descriptions ............................. 6 Ordering Guide .......................................................................... 25 Typical Performance Characteristics ............................................. 7 Spurious Performance................................................................ 13 REVISION HISTORY 3/16Rev. B to Rev. C 7/09Rev. A to Rev. B Changes to Product Title ................................................................. 1 Changed RF and LO Frequency Range from 2.4 GHz to Changes to Table 2 ............................................................................ 4 3 GHz Throughout ............................................................................ 1 Changes to Table 3 ............................................................................ 5 Changes to General Description Section ....................................... 1 Added Endnote 2 ............................................................................... 4 Added Junction to Board Thermal Impedance Section .............. 5 Changes to Figure 2 and Table 4 ..................................................... 6 Added Low Frequency Applications Section .............................. 19 Change to Typical Performance Characteristics Section ............ 7 Added Figure 56 and Figure 57 .................................................... 20 Moved Spur Table Section and Table 3, Renumbered Changes to the Evaluation Board Section ................................... 21 Sequentially ..................................................................................... 13 Added Figure 59 to Figure 62 ....................................................... 22 Changed Spur Table Section to Spurious Performance Section ..... 13 Updated Outline Dimensions ....................................................... 24 Added Test Circuit Section ............................................................ 14 Changes to Ordering Guide .......................................................... 24 Moved Figure 38 ............................................................................. 14 Changed Circuit Description Section to Theory of Operation 1/07Rev. 0 to Rev. A Section .............................................................................................. 15 Changes to Features .......................................................................... 1 Changes to Theory of Operation Section .................................... 15 Changes to General Description ..................................................... 1 Added Applications Above 3 GHz Section ................................. 20 Changes to Table 2 ............................................................................. 4 Added Figure 56, Figure 57, and Figure 58, Renumbered Replaced the High Frequency Applications Section.................. 18 Sequentially ..................................................................................... 21 Updated Outline Dimensions ....................................................... 25 4/05Revision 0: Initial Version Changes to Ordering Guide .......................................................... 25 Rev. C Page 2 of 25