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AD8132:  Low Cost, High Speed Differential Amplifier

Product Details


The AD8132 is a low cost differential or single-ended input to differential output amplifier with resistor set gain. The AD8132 is a major advancement over op amps for driving differential input ADCs or for driving signals over long lines. The AD8132 has a unique internal feedback feature that provides output gain and phase matching balanced to −68 dB at 10 MHz, suppressing harmonics and reducing radiated EMI.

Manufactured using the next-generation of Analog Devices, Inc., XFCB bipolar process, the AD8132 has a −3 dB bandwidth of 350 MHz and delivers a differential signal with −99 dBc SFDR at 5 MHz, despite its low cost. The AD8132 eliminates the need for a transformer with high performance ADCs, preserving the low frequency and dc information. The common-mode level of the differential output is adjustable by applying a voltage on the VOCM pin, easily level shifting the input signals for driving single-supply ADCs. Fast overload recovery preserves sampling accuracy.

The AD8132 is also used as a differential driver for the trans-mission of high speed signals over low cost twisted pair or coaxial cables. The feedback network can be adjusted to boost the high frequency components of the signal. The AD8132 is used for either analog or digital video signals or for other high speed data trans-mission. The AD8132 is capable of driving either a Category 3 or Category 5 twisted pair or coaxial cable with minimal line attenuation. The AD8132 has considerable cost and performance improvements over discrete line driver solutions.

Differential signal processing reduces the effects of ground noise that plagues ground-referenced systems. The AD8132 can be used for differential signal processing (gain and filtering) throughout a signal chain, easily simplifying the conversion between differential and single-ended components.

The AD8132W is the automotive grade version, qualified for 125°C operation per the AEC-Q100. See the Automotive Products section for more details.

The AD8132 is available in both 8-lead SOIC and 8-lead MSOP packages for operation over the extended industrial temperature range of −40°C to +125°C.

Applications
  • Low power differential ADC drivers
  • Differential gain and differential filtering
  • Video line drivers
  • Differential in/out level shifting
  • Single-ended input to differential output drivers
  • Active transformers
  • Automotive driver assistance
  • Automotive infotainment
  • FEATURES and BENEFITS

    • High speed
      350 MHz, −3 dB bandwidth
      1200 V/μs slew rate
    • Resistor set gain
    • Internal common-mode feedback
    • Improved gain and phase balance: −68 dB @ 10 MHz
    • Separate input to set the common-mode output voltage
    • Low distortion: −99 dBc SFDR @ 5 MHz, 800 Ω load
    • Low power: 10.7 mA @ 5 V
    • Power supply range: +2.7 V to ±5.5 V
    • Fully AEC-Q100 qualified (AD8132W)

    AD8132 Pin Configuration Diagram

    Next Generation Devices

    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.

    Documentation

    Title Content Type File Type
    AD8132: Low-Cost, High Speed Differential Amplifier Data Sheet  (Rev I, 09/2009) (pdf, 441 kB) Data Sheets PDF
    AN-1026: High Speed Differential ADC Driver Design Considerations  (pdf, 355 kB) Application Notes PDF
    AN-0990: Terminating a Differential Amplifier in Single-Ended Input Applications  (pdf, 181 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-130: Differential Amplifier Evaluation Board for 8-lead SOIC and MSOP Packages  (pdf, 493 kB) User Guides PDF
    "Rules of the Road" for High-Speed Differential ADC Drivers
    (Analog Dialogue, Vol. 43, No. 5, 2009)
    Analog Dialogue HTML
    Amplifiers for Video Distribution  (pdf, 115 kB) Product Selection Guide PDF
    High Speed Amplifiers Selection Table  (pdf, 77 kB) Product Selection Guide PDF
    Video Amplifier Products (April 2007)  (pdf, 4117 kB) Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    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
    AD8132 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

    AD8132 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8132AR Status: Last Time Buy 8 ld SOIC 8 Ind Tube, 98 $2.29 $1.93 N  Material Info PDN Purchase
    AD8132AR-REEL Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 2500 - $1.93 N  Material Info PDN Purchase
    AD8132AR-REEL7 Status: Last Time Buy 8 ld SOIC 8 Ind Reel, 1000 - $1.93 N  Material Info PDN Purchase
    AD8132ARM Status: Last Time Buy 8 ld MSOP 8 Ind Tube, 50 $2.29 $1.93 N  Material Info PCN/PDN Purchase
    AD8132ARMZ Status: Production 8 ld MSOP 8 Ind Tube, 50 $1.97 $1.67 Y  Material Info PCN Purchase Sample
    AD8132ARMZ-REEL Status: Production 8 ld MSOP 8 Ind Reel, 3000 - $1.67 Y  Material Info PCN Purchase
    AD8132ARMZ-REEL7 Status: Production 8 ld MSOP 8 Ind Reel, 1000 - $1.67 Y  Material Info PCN Purchase
    AD8132ARZ Status: Production 8 ld SOIC 8 Ind Tube, 98 $1.97 $1.67 Y  Material Info Notify Me Purchase Sample
    AD8132ARZ-R7 Status: Production 8 ld SOIC 8 Ind Reel, 1000 - $1.67 Y  Material Info Notify Me Purchase
    AD8132ARZ-RL Status: Production 8 ld SOIC 8 Ind Reel, 2500 - $1.67 Y  Material Info Notify Me Purchase
    AD8132WARMZ-R7 Status: Production 8 ld MSOP 8 Auto Reel, 1000 - $1.83 Y  Material Info PCN Purchase Sample
    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.

    AD8132 Evaluation Boards
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8132AR-EBZ Status: Production 8-Lead SOIC Bare Evaluation Board $18.25 Yes -
    AD8132ARZ Status: Production 8-Lead SOIC $2.78 Yes -
    AD8132ARM-EBZ Status: Production 8-Lead MSOP Bare Evaluation Board $18.25 Yes -
    AD8132ARMZ Status: Production 8-Lead MSOP $2.78 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.

    Check Inventory & Purchase

    View Sales and Distribution Offices

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