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AD8139ACP-EBZ Datasheet(PDF) 1 Page - Analog Devices |
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AD8139ACP-EBZ Datasheet(HTML) 1 Page - Analog Devices |
1 / 27 page Low Noise, Rail-to-Rail, Differential ADC Driver Data Sheet AD8139 Rev. C 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 ©2004–2016 Analog Devices, Inc. All rights reserved. Technical Support www.analog.com FEATURES Fully differential Low noise 2.25 nV/√Hz 2.1 pA/√Hz Low harmonic distortion 98 dBc SFDR at 1 MHz 85 dBc SFDR at 5 MHz 72 dBc SFDR at 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 at 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 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 analog-to-digital converters (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. FUNCTIONAL BLOCK DIAGRAMS –IN VOCM V+ +OUT +IN NIC V– –OUT NIC = NO INTERNAL CONNECTION. 1 2 3 4 8 7 6 5 AD8139 Figure 1. 8-Lead SOIC –IN VOCM V+ +OUT NIC +IN V– –OUT NIC = NO INTERNAL CONNECTION. 3 4 1 2 6 5 8 7 AD8139 TOP VIEW (Not to Scale) Figure 2. 8-Lead LFCSP The AD8139 is manufactured on the proprietary Analog Devices, Inc., 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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