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AD8352ACPZ-R2 Datasheet(PDF) 1 Page - Analog Devices |
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AD8352ACPZ-R2 Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page 2 GHz Ultralow Distortion Differential RF/IF Amplifier AD8352 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006–2008 Analog Devices, Inc. All rights reserved. FEATURES −3 dB bandwidth of 2.2 GHz (AV = 10 dB) Single resistor gain adjust: 3 dB ≤ AV ≤ 25 dB Single resistor and capacitor distortion adjust Input resistance: 3 kΩ, independent of gain (AV) Differential or single-ended input to differential output Low noise input stage: 2.7 nV/√Hz RTI @ AV = 10 dB Low broadband distortion 10 MHz: −86 dBc HD2, −82 dBc HD3 70 MHz: −84 dBc HD2, −82 dBc HD3 190 MHz: −81 dBc HD2, −87 dBc HD3 OIP3 of 41 dBm @ 150 MHz Slew rate: 8 V/ns Fast settling and overdrive recovery of <2 ns Single-supply operation: 3 V to 5.5 V Low power dissipation: 37 mA typical @ 5 V Power-down capability: 5 mA @ 5 V Fabricated using the high speed XFCB3 SiGe process APPLICATIONS Differential ADC drivers Single-ended-to-differential conversion RF/IF gain blocks SAW filter interfacing FUNCTIONAL BLOCK DIAGRAM ENB VCM VOP VON GND RGP RDP RDN RGN VIP VIN BIAS CELL VCC CD RD RG AD8352 + – Figure 1. –60 –100 20 220 FREQUENCY (MHz) –65 –70 –75 –80 –85 –90 –95 44 28 42 40 38 36 34 32 30 40 60 80 100 120 140 160 180 200 Figure 2. Third Harmonic Distortion (HD3) and IP3 vs. Frequency, Measured Differentially GENERAL DESCRIPTION The AD8352 is a high performance differential amplifier optimized for RF and IF applications. It achieves better than 80 dB SFDR performance at frequencies up to 200 MHz, and 65 dB beyond 500 MHz, making it an ideal driver for high speed 12-bit to 16-bit analog-to-digital converters (ADCs). Unlike other wideband differential amplifiers, the AD8352 has buffers that isolate the gain setting resistor (RG) from the signal inputs. As a result, the AD8352 maintains a constant 3 kΩ input resistance for gains of 3 dB to 25 dB, easing matching and input drive requirements. The AD8352 has a nominal 100 Ω differential output resistance. The device is optimized for wideband, low distortion performance at frequencies beyond 500 MHz. These attributes, together with its wide gain adjust capability, make this device the amplifier of choice for general-purpose IF and broadband applications where low distortion, noise, and power are critical. It is ideally suited for driving not only ADCs but also mixers, pin diode attenuators, SAW filters, and multi-element discrete devices. The device is available in a compact 3 mm × 3 mm, 16-lead LFCSP and operates over a temperature range of −40°C to +85°C. |
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