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AD8375 Datenblatt(PDF) 1 Page - Analog Devices |
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AD8375 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 24 page Ultralow Distortion IF VGA Data Sheet AD8375 Rev. B Document Feedback Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother 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 ©2007–2017 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Bandwidth of 630 MHz (−3 dB) Gain range: −4 dB to +20 dB Step size: 1 dB ± 0.2 dB Differential input and output Noise figure: 8 dB @ maximum gain Output IP3 of ~50 dBm at 200 MHz Output P1dB of 19 dBm at 200 MHz Provides constant SFDR vs. gain Parallel 5-bit control interface Power-down feature Single 5 V supply operation 24-lead, 4 mm × 4 mm LFCSP APPLICATIONS Differential ADC drivers High IF sampling receivers Wideband multichannel receivers Instrumentation FUNCTIONAL BLOCK DIAGRAM A2 A3 A4 A1 A0 POST-AMP α REGISTERS AND GAIN DECODER VPOS COMM AD8375 VCOM VIN+ VIN– PWUP OUT+ OUT+ OUT– OUT– Figure 1. GENERAL DESCRIPTION The AD8375 is a digitally controlled, variable gain, wide bandwidth amplifier that provides precise gain control, high IP3, and low noise figure. The excellent distortion performance and high signal bandwidth make the AD8375 an excellent gain control device for a variety of receiver applications. Using an advanced high speed SiGe process and incorporating proprietary distortion cancellation techniques, the AD8375 achieves 50 dBm output IP3 at 200 MHz. The AD8375 provides a broad 24 dB gain range with 1 dB resolution. The gain is adjusted through a 5-pin control interface and can be driven using standard TTL levels. The open-collector outputs provide a flexible interface, allowing the overall signal gain to be set by the loading impedance. Thus, the signal voltage gain is directly proportional to the load. The AD8375 is powered on by applying the appropriate logic level to the PWUP pin. The quiescent current of the AD8375 is typically 130 mA. When powered down, the AD8375 consumes less than 5 mA and offers excellent input-to-output isolation. Fabricated on an Analog Devices, Inc., high speed SiGe process, the AD8375 is supplied in a compact, thermally enhanced, 4 mm × 4 mm, 24-lead LFCSP package and operates over the temperature range of −40°C to +85°C. –40 –60 –50 –70 –90 –80 –100 –110 65 55 60 50 40 45 35 30 40 60 80 100 120 140 160 180 200 FREQUENCY (MHz) OIP3 HD2 HD3 Figure 2. Harmonic Distortion and Output IP3 vs. Frequency |
Ähnliche Teilenummer - AD8375_17 |
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Ähnliche Beschreibung - AD8375_17 |
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