AD8342-EVALZ

Active Receive Mixer Low Frequency to 3.8 GHz AD8342 Data Sheet FUNCTIONAL BLOCK DIAGRAM Broadband RF, LO, and IF ports Conversion gain: 3.7 dB Noise figure: 12.2 dB Input IP3: 22.7 dBm Input P1dB: 8.3 dBm LO drive: 0 dBm Differential high impedance RF input port Single-ended, 50 Ω LO input port Open-collector IF output port Single-supply operation: 5 V at 98 mA Power-down mode Exposed pad LFCSP: 3 mm × 3 mm VPDC PWDN 12 11 COMM 13 10 9 8 COMM 7 IFOP RFIN 15 6 IFOM VPMX 16 5 COMM BIAS RFCM 14 APPLICATIONS EXRB COMM AD8342 1 2 VPLO LOCM 3 4 LOIN COMM 05352-001 FEATURES Figure 1. Cellular base station receivers ISM receivers Radio links RF instrumentation GENERAL DESCRIPTION The AD8342 is a high performance, broadband active mixer. It is well suited for demanding receive channel applications that require wide bandwidth on all ports and very low intermodulation distortion and noise figure. The AD8342 provides a typical conversion gain of 3.7 dB with an RF frequency of 238 MHz. The integrated LO driver presents a 50 Ω input impedance with a low LO drive level, helping to minimize the external component count. The differential high impedance broadband RF port allows easy 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 Ω) at P1dB. Rev. C The open-collector differential outputs provide excellent balance and can be used with a differential filter or IF amplifier, such as the AD8370, AD8375, AD8351, AD8352, or ADL5561. These outputs can also be converted to a single-ended signal using a matching network or a balun transformer. The outputs are capable of swinging 2 V p-p when biased to the VPOS supply rail. The AD8342 is fabricated on an Analog Devices, Inc., proprietary, high performance SiGe IC process. The AD8342 is available in a 16-lead LFCSP. It operates over a −40°C to +85°C temperature range. An evaluation board is also available. 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Technical Support www.analog.com AD8342 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 3/16—Rev. B to Rev. C Changes to Product Title ................................................................. 1 Changes to Table 2 ............................................................................ 4 Changes to Table 3 ............................................................................ 5 Added Junction to Board Thermal Impedance Section .............. 5 Changes to Figure 2 and Table 4 ..................................................... 6 Change to Typical Performance Characteristics Section ............ 7 Moved Spur Table Section and Table 3, Renumbered Sequentially ..................................................................................... 13 Changed Spur Table Section to Spurious Performance Section ..... 13 Added Test Circuit Section............................................................ 14 Moved Figure 38 ............................................................................. 14 Changed Circuit Description Section to Theory of Operation Section .............................................................................................. 15 Changes to Theory of Operation Section .................................... 15 Added Applications Above 3 GHz Section ................................. 20 Added Figure 56, Figure 57, and Figure 58, Renumbered Sequentially ..................................................................................... 21 Updated Outline Dimensions ....................................................... 25 Changes to Ordering Guide .......................................................... 25 7/09—Rev. A to Rev. B Changed RF and LO Frequency Range from 2.4 GHz to 3 GHz Throughout ............................................................................1 Changes to General Description Section .......................................1 Added Endnote 2 ...............................................................................4 Added Low Frequency Applications Section .............................. 19 Added Figure 56 and Figure 57 .................................................... 20 Changes to the Evaluation Board Section ................................... 21 Added Figure 59 to Figure 62 ....................................................... 22 Updated Outline Dimensions ....................................................... 24 Changes to Ordering Guide .......................................................... 24 1/07—Rev. 0 to Rev. A Changes to Features ..........................................................................1 Changes to General Description .....................................................1 Changes to Table 2.............................................................................4 Replaced the High Frequency Applications Section.................. 18 4/05—Revision 0: Initial Version Rev. C | Page 2 of 25 Data Sheet AD8342 SPECIFICATIONS VS = 5 V, TA = 25°C, fRF = 238 MHz, fLO = 286 MHz, LO power = 0 dBm, ZO = 50 Ω, RBIAS = 1.82 kΩ, RF termination = 100 Ω, IF load = 100 Ω differential, unless otherwise noted. Table 1. Parameter RF INPUT INTERFACE Return Loss Input Impedance DC Bias Level OUTPUT INTERFACE Output Impedance DC Bias Voltage Power Range LO INTERFACE Return Loss DC Bias Voltage POWER-DOWN INTERFACE PWDN Threshold PWDN Response Time PWDN Input Bias Current POWER SUPPLY Positive Supply Voltage Quiescent Current VPDC VPMX, IFOP, IFOM VPLO Total Quiescent Current Power-Down Current Test Conditions/Comments Min High-Z input terminated with 100 Ω off-chip resistor Frequency = 238 MHz (measured at RFIN with RFCM ac-grounded) Internally generated; port must be ac-coupled Differential impedance, frequency = 48 MHz Supplied externally Via a 2:1 impedance ratio transformer Typ Max 10 1||0.4 2.4 4.75 10||0.5 VS Unit dB kΩ||pF V 5.25 13 kΩ||pF V dBm Internally generated; port must be ac-coupled 10 VS − 1.6 dB V Device enabled, IF output to 90% of its final level Device disabled, supply current