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AD8630:  Zero Drift, Single-Supply, Rail-to-Rail Quad Op Amp

Product Details


This amplifier has ultralow offset, drift, and bias current. The AD8628/AD8629/AD8630 are wide bandwidth auto-zero amplifiers featuring rail-to-rail input and output swing and low noise. Operation is fully specified from 2.7 V to 5 V single supply (±1.35 V to ±2.5 V dual supply).

The AD8628/AD8629/AD8630 provide benefits previously found only in expensive auto-zeroing or chopper-stabilized amplifiers. Using Analog Devices, Inc., topology, these zero-drift amplifiers combine low cost with high accuracy and low noise. No external capacitor is required. In addition, the AD8628/ AD8629/AD8630 greatly reduce the digital switching noise found in most chopper-stabilized amplifiers.

With an offset voltage of only 1 μV, drift of less than 0.005 μV/°C, and noise of only 0.5 μV p-p (0 Hz to 10 Hz), the AD8628/ AD8629/AD8630 are suited for applications where error sources cannot be tolerated. Position and pressure sensors, medical equipment, and strain gage amplifiers benefit greatly from nearly zero drift over their operating temperature range. Many systems can take advantage of the rail-to-rail input and output swings provided by the AD8628/AD8629/AD8630 to reduce input biasing complexity and maximize SNR.

The AD8628/AD8629/AD8630 are specified for the extended industrial temperature range (−40°C to +125°C). The AD8628 is available in tiny 5-lead TSOT, 5-lead SOT-23, and 8-lead narrow SOIC plastic packages. The AD8629 is available in the standard 8-lead narrow SOIC and MSOP plastic packages. The AD8630 quad amplifier is available in 14-lead narrow SOIC and 14-lead TSSOP plastic packages. See the Ordering Guide for automotive grades.

Applications

  • Automotive sensors
  • Pressure and position sensors
  • Strain gage amplifiers
  • Medical instrumentation
  • Thermocouple amplifiers
  • Precision current sensing
  • Photodiode amplifiers
  • Data Sheet, Rev. H, 4/2010

    FEATURES and BENEFITS

    • Chinese data sheet available
    • Lowest auto-zero amplifier noise
    • Low offset voltage: 1 μV
    • Input offset drift: 0.002 μV/°C
    • Rail-to-rail input and output swing
    • 5 V single-supply operation
    • High gain, CMRR, and PSRR: 130 dB
    • Very low input bias current: 100 pA maximum
    • Low supply current: 1.0 mA
    • Overload recovery time: 50 μs
    • No external components required
    • Qualified for automotive applications

    Pin Configuration Diagram for AD8630

    Similar Products

    • AD8638 and AD8639: fully specified from 5 V to 16 V single supply (±2.5 V to ±8 V dual supply)
    • ADA4528-1 and ADA4528-2: available in single and dual versions offering lower offset and voltage noise, with higher bandwidth in a zero-drift precision Op Amp

    AEC-Q100 Qualified

    A version of this product is AEC-Q100 qualified. View the complete list of Operational Amplifiers and References qualified for Automotive applications.

    Documentation

    Title Content Type File Type
    AD8628/AD8629/AD8630: Zero-Drift, Single-Supply, Rail-to-Rail Input/Output Operational Amplifier Data Sheet (Rev J, 02/2014) (pdf, 414 kB) Data Sheets PDF
    AN-1114: Lowest Noise Zero-Drift Amplifier Has 5.6 nV/√Hz Voltage Noise Density  (pdf, 182 kB) Application Notes PDF
    AN-940: Low Noise Amplifier Selection Guide for Optimal Noise Performance  (pdf, 199 kB) Application Notes PDF
    Op Amp Applications Handbook Design Handbooks HTML
    MT-055: Chopper Stabilized (Auto-Zero) Precision Op Amps  (pdf, 320 kB) Tutorials PDF
    MT-052: Op Amp Noise Figure: Don't Be Misled  (pdf, 60 kB) Tutorials PDF
    MT-050: Op Amp Total Output Noise Calculations for Second-Order System  (pdf, 38 kB) Tutorials PDF
    MT-049: Op Amp Total Output Noise Calculations for Single-Pole System  (pdf, 40 kB) Tutorials PDF
    MT-048: Op Amp Noise Relationships: 1/f Noise, RMS Noise, and Equivalent Noise Bandwidth  (pdf, 81 kB) Tutorials PDF
    MT-047: Op Amp Noise  (pdf, 72 kB) Tutorials PDF
    WEBCAST: Noise Optimization in Sensor Signal Conditioning Circuits (Part I)
    This first part of a two-part series will explore the noise topic in detail and provide tips and answers to these types of questions.
    Webcasts WEBCAST
    WEBCAST: Noise Optimization in Sensor Signal Conditioning Circuits (Part II)
    This is the second part of a two-part series that explores the topic of signal noise in detail.
    Webcasts WEBCAST
    Ask the Applications Engineer - 39: Zero Drift Operational Amplifiers Analog Dialogue HTML
    Demystifying Auto-Zero Amplifiers Analog Dialogue HTML
    Amplifiers for Signal Conditioning - Section 3  (PDF, 397 kB)
    By Walt Kester, James Bryant, Walt Jung
    Technical Articles PDF
    MS-2066: Low Noise Signal Conditioning for Sensor-Based Circuits  (pdf, 425 kB) Technical Articles PDF
    Demystifying Auto-Zero Amplifiers Part 2
    by Eric Nolan and Reza Moghimi (Analog Dialogue, May 2000)
    Technical Articles HTML
    Demystifying Auto-Zero Amplifiers Part 1
    by Eric Nolan (Analog Dialogue, March 2000)
    Technical Articles HTML
    Zero-Drift Amplifiers  (pdf, 0) Overview PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    OpAmp Stability
    An applet for demonstrating stability effects in opamp buffers.
    Design Calculators HTML
    ADIsimOpAmp™
    This tool will help with the selection, evaluation and troubleshooting of voltage feedback Op-Amps. It uses typical data to model the behavior of a selected amplifier. It allows a user to select an amplifier, configure a circuit, apply a signal and evaluate the performance. It is useful for checking an amplifier's spec's such as Bandwidth, Slew Rate, Input/Output Range, Gain Error, Load Current, Stability Issues and DC Errors in a given circuit.
    ADIsim Design/Simulation Tools HTML
    Analog Bridge Wizard
    The Analog Bridge Wizard recommends amplifiers and ADC's for your bridge application. Find out which op-amp or in-amp is best for your design, and view the error budget analysis for that solution.
    ADIsim Design/Simulation Tools HTML
    AD8630 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

    AD8630 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD8630ARUZ Status: Production 14 ld TSSOP 14 Ind Tube, 96 $3.24 $2.73 Y  Material Info PCN Purchase Sample
    AD8630ARUZ-REEL Status: Production 14 ld TSSOP 14 Ind Reel, 2500 - $2.73 Y  Material Info PCN Purchase
    AD8630ARZ Status: Production 14 ld SOIC 14 Ind Tube, 56 $3.24 $2.73 Y  Material Info PCN Purchase Sample
    AD8630ARZ-REEL Status: Production 14 ld SOIC 14 Ind Reel, 2500 - $2.73 Y  Material Info PCN Purchase
    AD8630ARZ-REEL7 Status: Production 14 ld SOIC 14 Ind Reel, 1000 - $2.73 Y  Material Info PCN Purchase
    AD8630WARZ-R7 Status: Production 14 ld SOIC 14 Auto Reel, 1000 - $3.41 Y  Material Info Notify Me Purchase
    AD8630WARZ-RL Status: Production 14 ld SOIC 14 Auto Reel, 2500 - $3.41 Y  Material Info Notify Me 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.

    EVAL-OPAMP-4 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    EVAL-PRAOPAMP-4RUZ Status: Production QUAD 14-Lead TSSOP Evaluation Board $20.19 Yes -
    EVAL-PRAOPAMP-4RZ Status: Production QUAD R-14 lead SOIC Evaluation Board $20.19 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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