Low Noise, Rail-to-Rail, Differential ADC Driver Data Sheet AD8139 FEATURES FUNCTIONAL BLOCK DIAGRAMS AD8139 Fully differential IN 1 8 +IN Low noise V 2 7 NIC OCM 2.25 nV/Hz V+ 3 6 V 2.1 pA/Hz +OUT 4 5 OUT Low harmonic distortion NIC = NO INTERNAL CONNECTION. 98 dBc SFDR at 1 MHz Figure 1. 8-Lead SOIC 85 dBc SFDR at 5 MHz AD8139 72 dBc SFDR at 20 MHz TOP VIEW High speed (Not to Scale) 410 MHz, 3 dB BW (G = 1) IN 1 8 +IN 800 V/s slew rate V 2 7 NIC OCM 45 ns settling time to 0.01% V V+ 3 6 69 dB output balance at 1 MHz 5 OUT +OUT 4 80 dB dc CMRR NIC = NO INTERNAL CONNECTION. Low offset: 0.5 mV maximum Figure 2. 8-Lead LFCSP Low input offset current: 0.5 A 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 The AD8139 is manufactured on the proprietary Analog Devices, APPLICATIONS Inc., second-generation XFCB process, enabling it to achieve low levels of distortion with input voltage noise of only 2.25 nV/Hz. ADC drivers to 18 bits Single-ended-to-differential converters The AD8139 is available in an 8-lead SOIC package with an Differential filters exposed paddle (EP) on the underside of its body and a 3 mm Level shifters 3 mm LFCSP. It is rated to operate over the temperature range Differential PCB drivers of 40C to +125C. Differential cable drivers 100 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. 10 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 1 10 100 1k 10k 100k 1M 10M 100M 1G are easily realized by the AD8139. Simple external feedback FREQUENCY (Hz) networks consisting of four resistors determine the closed-loop Figure 3. Input Voltage Noise vs. Frequency gain of the amplifier. Rev. C Document Feedback 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 Tel: 781.329.4700 20042016 Analog Devices, Inc. All rights reserved. license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Technical Support www.analog.com Trademarks and registered trademarks are the property of their respective owners. INPUT VOLTAGE NOISE (nV/ Hz) 04679-102 04679-001 04679-078AD8139* PRODUCT PAGE QUICK LINKS Last Content Update: 09/22/2017 COMPARABLE PARTS REFERENCE MATERIALS View a parametric search of comparable parts. Product Selection Guide High Speed Amplifiers Selection Table EVALUATION KITS Tutorials Universal Evaluation Board for Single Differential MT-075: Differential Drivers for High Speed ADCs Amplifiers Overview MT-076: Differential Driver Analysis DOCUMENTATION MT-218: Multiple Feedback Band-Pass Design Example Application Notes AN-0992: Active Filter Evaluation Board for Differential DESIGN RESOURCES Amplifiers AD8139 Material Declaration AN-1026: High Speed Differential ADC Driver Design PCN-PDN Information Considerations Quality And Reliability AN-1363: Meeting Biasing Requirements of Externally Symbols and Footprints Biased RF/Microwave Amplifiers with Active Bias Controllers DISCUSSIONS AN-584: Using the AD813X Differential Amplifier AN-649: Using the Analog Devices Active Filter Design View all AD8139 EngineerZone Discussions. Tool Data Sheet SAMPLE AND BUY AD8139: Low Noise, Rail-to-Rail, Differential ADC Driver Visit the product page to see pricing options. Data Sheet User Guides TECHNICAL SUPPORT UG-474: Evaluation Board for Differential Amplifiers Submit a technical question or find your regional support Offered in 8-Lead SOIC Packages number. TOOLS AND SIMULATIONS DOCUMENT FEEDBACK ADI DiffAmpCalc Submit feedback for this data sheet. AD8139 SPICE Macro Model This page is dynamically generated by Analog Devices, Inc., and inserted into this data sheet. A dynamic change to the content on this page will not trigger a change to either the revision number or the content of the product data sheet. This dynamic page may be frequently modified.