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AD8139:  Low Noise, Rail-to-Rail, Differential ADC Driver

Product Status:Production
Data
Sheet
AD8139 Data Sheet Rev B, 10/2007 (pdf 678kB)

Product Details

Product Status:Production
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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.

Applications

  • ADC drivers to 18 bits
  • Single-ended-to-differential converters
  • Differential filters
  • Level shifters
  • Differential PCB drivers
  • Differential cable drivers

    • Data Sheet, Rev. B, 10/07

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    FEATURES and BENEFITS

    • 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%
    • Fully differential
    • 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

    Pin Out Diagram for AD8139

    AD8139 Diagram
    Pin Out Diagram for AD8139

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    Analog Devices introduces the next generation of Differential Amplifiers, these new amplifiers offer higher performance and lower power consumption than previous devices. Also new in this category, is each of these devices are offered as dual amplifiers, which simplifies designs and reduces board area.

    • ADA4932-1: Low Power Differential ADC Driver
    • ADA4932-2: Low Cost / Low Power Differential ADC Driver
    • ADA4937-1: Ultralow Distortion Differential ADC Driver (Single)
    • ADA4937-2: Ultralow Distortion Differential ADC Driver (Dual)
    • ADA4938-1: Ultralow Distortion Differential ADC Driver (Single)
    • ADA4938-2: Ultralow Distortion Differential ADC Driver (Dual)

    Documentation

    Title Content Type File Type
    AD8139:Low Noise, Rail-to-Rail, Differential ADC Driver Data Sheet  (Rev B, 10/2007) (pdf, 678 kB) Data Sheets PDF
    AN-1026: High Speed Differential ADC Driver Design Considerations  (pdf, 355 kB) Application Notes PDF
    AN-0992: Active Filter Evaluation Board for Differential Amplifiers  (pdf, 85 kB) Application Notes PDF
    AN-649: Using the Analog Devices Active Filter Design Tool  (pdf, 5301 kB) Application Notes PDF
    AN-584: Using the AD813X Differential Amplifier  (pdf, 174 kB)
    The AD813x differs from conventional op amps by the external presence of an additional input and output. The additional input, VOGM, controls the output common mode voltage.     		Application Notes PDF
    MT-218: Multiple Feedback Band-Pass Design Example  (pdf, 0) Tutorials PDF
    MT-076: Differential Driver Analysis  (pdf, 95 kB) Tutorials PDF
    MT-075: Differential Drivers for High Speed ADCs Overview  (pdf, 183 kB) Tutorials PDF
    A Stress-Free Method for Choosing High-Speed Op Amps
    A decision-tree approach to making the critical decision about high-speed op amp selection, including a look at some helpful tools.     		Webcasts WEBCAST
    UG-474: Evaluation Board for Differential Amplifiers Offered in 8-Lead SOIC Packages  (PDF, 263 kB) User Guides PDF
    UG-190: Differential Amplifier Evaluation Board for Single 8-lead LFCSP Packages  (pdf, 278 kB) User Guides PDF
    UG-130: Differential Amplifier Evaluation Board for 8-lead SOIC and MSOP Packages  (pdf, 493 kB) User Guides PDF
    Ask The Application Engineer 36, Wideband A/D Converter Front-End Design Considerations II: Amplifier-or Transformer Drive for the ADC?
    (Analog Dialogue, Volume 41 February 2007)     		Analog Dialogue HTML
    "Rules of the Road" for High-Speed Differential ADC Drivers
    (Analog Dialogue, Vol. 43, No. 5, 2009)     		Analog Dialogue HTML
    AD8139/AD8137: Differential Amplifiers For ADC Driving  (htm)
    (analogZONE, June 7,2004)     		Product Reviews HTM
    High Speed Amplifiers Selection Table  (pdf, 77 kB) Product Selection Guide PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    Analog Filter Wizard 2.0
    The Analog Filter Wizard™ helps you design a low-pass, high-pass, band-pass or band-stop filter with actual op amps. It then simulates the filter’s performance with these op amps in real time. You can ask the tool to optimize for power, noise, or voltage range, and it will pick op amps and passive components appropriately. Or you can adjust the components manually yourself.     		ADIsim Design/Simulation Tools HTML
    ADI DiffAmpCalc™
    ADI's new ADI DiffAmpCalc™ is a free, downloadable calculator for designing differential amplifier circuits. The tool is easy to use and features an interactive user interface to quickly get you up and running.     		ADIsim Design/Simulation Tools HTML
    AD8139 SPICE Macro Model SPICE Models HTML

    Evaluation Kits & Symbols & Footprints

    Evaluation Boards & KitsView the Evaluation Boards and Kits page for documentation and purchasing

    Symbols and Footprints— Analog Devices offers Symbols & Footprints which are compatible with a large set of today’s CAD systems for broader and easier support.

    SampleSample & Buy

    Price, packaging, availability

    AD8139 Model Options
    Model Package Pins Temp.
    Range         		Packing,
    Qty         		Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8139ACPZ-R2 Status: Production 8 ld LFCSP (3x3mm) 8 Ind Reel, 250 $4.30 - Y  Material Info Notify Me Purchase
    AD8139ACPZ-REEL Status: Production 8 ld LFCSP (3x3mm) 8 Ind Reel, 5000 - $3.75 Y  Material Info Notify Me Purchase
    AD8139ACPZ-REEL7 Status: Production 8 ld LFCSP (3x3mm) 8 Ind Reel, 1500 - $3.75 Y  Material Info Notify Me Purchase Sample
    AD8139ARD Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 $4.94 $4.20 N  Material Info PCN Purchase
    AD8139ARD-REEL Status: Production 8 ld SOIC-EP 8 Ind Reel, 2500 - $4.20 N  Material Info PCN Purchase
    AD8139ARDZ Status: Production 8 ld SOIC-EP 8 Ind Tube, 98 $4.30 $3.75 Y  Material Info PCN Purchase Sample
    AD8139ARDZ-REEL Status: Production 8 ld SOIC-EP 8 Ind Reel, 2500 - $3.75 Y  Material Info PCN Purchase
    AD8139ARDZ-REEL7 Status: Production 8 ld SOIC-EP 8 Ind Reel, 1000 - $3.75 Y  Material Info PCN Purchase
    Price Table Help

    The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.

    AD8139 Evaluation Boards
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8139ACP-EBZ Status: Production 8-lead LFCSP Bare Evaluation Board $18.25 Yes -
    AD8139ACPZ-REEL7 Status: Production 8-Lead LFCSP - Yes -
    AD8139ARD-EBZ Status: Production 8-lead SOIC Bare Evaluation Board $18.25 Yes -
    AD8139ARDZ Status: Production 8-Lead SOIC $5.31 Yes -

    Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.

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