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AD8139ARD-REEL7 Datenblatt(PDF) 1 Page - Analog Devices |
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AD8139ARD-REEL7 Datenblatt(HTML) 1 Page - Analog Devices |
1 / 24 page Low Noise, Rail-to-Rail, Differential ADC Driver AD8139 Rev. B Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other 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 ©2007 Analog Devices, Inc. All rights reserved. FEATURES Fully differential Low noise 2.25 nV/√Hz 2.1 pA/√Hz Low harmonic distortion 98 dBc SFDR @ 1 MHz 85 dBc SFDR @ 5 MHz 72 dBc SFDR @ 20 MHz High speed 410 MHz, 3 dB BW (G = 1) 800 V/μs slew rate 45 ns settling time to 0.01% 69 dB output balance @ 1 MHz 80 dB dc CMRR Low offset: ±0.5 mV maximum Low input offset current: 0.5 μA maximum Differential input and output Differential-to-differential or single-ended-to-differential operation Rail-to-rail output Adjustable output common-mode voltage Wide supply voltage range: 5 V to 12 V Available in a small SOIC package and an 8-lead LFCSP APPLICATIONS ADC drivers to 18 bits Single-ended-to-differential converters Differential filters Level shifters Differential PCB drivers Differential cable drivers FUNCTIONAL BLOCK DIAGRAMS –IN 1 VOCM 2 V+ 3 +OUT 4 +IN 8 NC 7 V– 6 –OUT 5 NC = NO CONNECT AD8139 Figure 1. 8-Lead SOIC NC = NO CONNECT 1 –IN 2 VOCM 3 V+ 4 +OUT 7NC 8+IN 6V– 5–OUT AD8139 TOP VIEW (Not to Scale) Figure 2. 8-Lead LFCSP GENERAL DESCRIPTION The AD8139 is an ultralow noise, high performance differential amplifier with rail-to-rail output. With its low noise, high SFDR, and wide bandwidth, it is an ideal choice for driving ADCs with resolutions to 18 bits. The AD8139 is easy to apply, and its internal common-mode feedback architecture allows its output common-mode voltage to be controlled by the voltage applied to one pin. The internal feedback loop also provides outstanding output balance as well as suppression of even-order harmonic distortion products. Fully differential and single- ended-to-differential gain configurations are easily realized by the AD8139. Simple external feedback networks consisting of four resistors determine the closed-loop gain of the amplifier. The AD8139 is manufactured on the Analog Devices, Inc. proprietary, second-generation XFCB process, enabling it to achieve low levels of distortion with input voltage noise of only 2.25 nV/√Hz. The AD8139 is available in an 8-lead SOIC package with an exposed paddle (EP) on the underside of its body and a 3 mm × 3 mm LFCSP. It is rated to operate over the temperature range of −40°C to +125°C. 1 10 100 1k 10k 100k 1M 10M 1G 100M 10 100 FREQUENCY (Hz) Figure 3. Input Voltage Noise vs. Frequency |
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Ähnliche Beschreibung - AD8139ARD-REEL7 |
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