Datasheet AD8343 (Analog Devices)

DC-to-2.5 GHz High IP3 Active Mixer AD8343 FEATURES FUNCTIONAL BLOCK DIAGRAM High-performance active mixer AD8343 COMM 1 14 COMM Broadband operation to 2.5 GHz Conversion gain: 7 dB INPP 2 13 OUTP Input IP3: 16.5 dBm INPM 3 12 OUTM LO drive: –10 dBm DCPL 4 11 COMM Noise figure: 14 dB VPOS 5 10 LOIP Input P1dB: 2.8 dBm BIAS Differential LO, IF and RF Ports PWDN 6 9 LOIM
1
50 Ω LO input impedance COMM 7 8 COMM
00 4- 03
Single-supply operation: 5 V @ 50 mA typical
01
Power-down mode @ 20 μA typical
Figure 1.
APPLICATIONS Cellular base stations Wireless LAN Satellite converters SONET/SDH radio Radio links RF instrumentation GENERAL DESCRIPTION
The LO driver circuitry typically consumes 15 mA of current. The AD8343 is a high-performance broadband active mixer. Two external resistors are used to set the mixer core current for With wide bandwidth on all ports and very low intermodula- required performance, resulting in a total current of 20 mA to tion distortion, the AD8343 is well suited for demanding 60 mA. This corresponds to power consumption of 100 mW to transmit applications or receive channel applications. 300 mW with a single 5 V supply. The AD8343 provides a typical conversion gain of 7 dB. The The AD8343 is fabricated on Analog Devices, Inc.’s high- integrated LO driver supports a 50 Ω differential input imped- performance 25 GHz silicon bipolar IC process. The AD8343 is ance with low LO drive level, helping to minimize external available in a 14-lead TSSOP package. It operates over a −40°C component count. to +85°C temperature range. A device-populated evaluation board is available. The open-emitter differential inputs can be interfaced directly to a differential filter or driven through a balun (transformer) to provide a balanced drive from a single-ended source. The open-collector differential outputs can be used to drive a differential IF signal interface or convert to a single-ended signal through the use of a matching network or transformer. When centered on the VPOS supply voltage, the outputs swing ±1 V.
Rev. B 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 license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Tel: 781.329.4700 www.analog.com Trademarks and registered trademarks are the property of their respective owners. Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved.
Document Outline FEATURES APPLICATIONS FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS BASIC OPERATING INSTRUCTIONS TYPICAL AC PERFORMANCE TYPICAL ISOLATION PERFORMANCE ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS RECEIVER CHARACTERISTICS TRANSMIT CHARACTERISTICS CIRCUIT DESCRIPTION DC INTERFACES BIASING AND DECOUPLING (VPOS, DCPL) POWER-DOWN INTERFACE (PWDN) AC INTERFACES INPUT INTERFACE (INPP AND INPM) SINGLE-ENDED-TO-DIFFERENTIAL CONVERSION INPUT MATCHING CONSIDERATIONS INPUT BIASING CONSIDERATIONS OUTPUT INTERFACE (OUTP, OUTM) OUTPUT MATCHING CONSIDERATIONS OUTPUT BIASING CONSIDERATIONS INPUT AND OUTPUT STABILITY CONSIDERATIONS LOCAL OSCILLATOR INPUT INTERFACE (LOIP, LOIM) DC COUPLING THE LO A STEP-BY-STEP APPROACH TO IMPEDANCE MATCHING Circuit Setup Establish Target Impedance Measure AD8343 Differential Impedance at Location of First Matching Component Design the Matching Network Transfer the Matching Network to the Final Design APPLICATIONS DOWNCONVERTING MIXER UPCONVERTING MIXER EVALUATION BOARD OUTLINE DIMENSIONS ORDERING GUIDE