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AD746:  Dual Precision, 500 ns Settling, BiFET Op Amp

Product Details


The AD746 is a dual operational amplifier, consisting of two AD744 BiFET op amps on a single chip. These precision monolithic op amps offer excellent dc characteristics plus rapid settling times, high slew rates and ample bandwidths. In addition, the AD746 provides the close matching ac and dc characteristics inherent to amplifiers sharing the same monolithic die.

The single pole response of the AD746 provides fast settling: 500 ns to 0.01%. This feature, combined with its high dc precision, makes it suitable for use as a buffer amplifier for 12- or 14-bit DACs and ADCs. Furthermore, the AD746's low total harmonic distortion (THD) level of 0.0001% and very close matching ac characteristics make it an ideal amplifier for many demanding audio applications.

The AD746 is internally compensated for stable operation as a unity gain inverter or as a noninverting amplifier with a gain of 2 or greater. It is available in four performance grades. The AD746J is rated over the commercial temperature range of 0 to +70°C. The AD746A and AD746B are rated over the industrial temperature range of -40°C to +85°C. The AD746S is rated over the military temperature range of -55°C to +125°C and is available processed to MIL-STD-883B, Rev. C.

The AD746 is available in three 8-pin packages: plastic mini DIP, hermetic cerdip and surface mount (SOIC).

APPLICATIONS

  • Dual Output Buffers for 12- and 14-Bit DACs
  • Input Buffers for Precision ADCs, Wideband Preamplifiers and Low Distortion Audio Circuitry
  • FEATURES and BENEFITS

    • AC PERFORMANCE
      500 ns Settling to 0.01% for 10 V Step
      75 V/µs Slew Rate
      0.0001% Total Harmonic Distortion (THD)
      13 MHz Gain Bandwidth
      Internal Compensation for Gains of +2 or Greater
    • Single Version: AD744
    • DC PERFORMANCE
      0.5 mV max Offset Voltage (AD746B)
      10 µV/°C max Drift (AD746B)
      175 V/mV min Open Loop Gain (AD746B)
      2 µV p-p Noise, 0.1 Hz to 10 Hz
      Available in Plastic Mini-DIP, Cerdip and Surface Mount Packages
    • Available in Tape and Reel in Accordance with EIA-481A Standard

    Pin Configuration Diagram for AD746

    Documentation

    Title Content Type File Type
    AD746: Dual Precision, 500 ns Settling, BiFET Op Amp Data Sheet (Rev B, 09/1989) (pdf, 428 kB) Data Sheets PDF
    AN-581: Biasing and Decoupling Op Amps in Single Supply Applications  (pdf, 166 kB) Application Notes PDF
    AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps  (pdf, 55 kB)
    So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
    Application Notes PDF
    AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems  (pdf, 228 kB)
    Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
    Application Notes PDF
    MT-060: Choosing Between Voltage Feedback and Current Feedback Op Amps  (pdf, 62 kB) Tutorials PDF
    MT-059: Compensating for the Effects of Input Capacitance on VFB and CFB Op Amps Used in Current-to-Voltage Converters  (pdf, 69 kB) Tutorials PDF
    MT-058: Effects of Feedback Capacitance on VFB and CFB Op Amps  (pdf, 66 kB) Tutorials PDF
    MT-056: High Speed Voltage Feedback Op Amps  (pdf, 109 kB) Tutorials PDF
    MT-053: Op Amp Distortion: HD, THD, THD + N, IMD, SFDR, MTPR  (pdf, 104 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
    MT-033: Voltage Feedback Op Amp Gain and Bandwidth  (pdf, 251 kB) Tutorials PDF
    MT-032: Ideal Voltage Feedback (VFB) Op Amp  (pdf, 65 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-128: Universal Evaluation Board for Dual High Speed Op Amps in SOIC Packages  (pdf, 208 kB) User Guides PDF
    RAQs index Rarely Asked Questions HTML
    Glossary of EE Terms Glossary HTML

    Design Tools,Models,Drivers & Software

    Title Content Type File Type
    dBm/dBu/dBv Calculator
    This calculator converts between standard units of power measurement and signal strength.
    Utilities and Conversions HTML
    Power Dissipation vs Die Temp
    This tool estimates die temperature and power dissipation based on the supply voltages, ambient temperature, load characteristics, and package thermal data.
    Utilities and Conversions 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
    OpAmp Stability
    An applet for demonstrating stability effects in opamp buffers.
    Design Calculators HTML
    AD746 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

    AD746 Model Options
    Model Package Pins Temp.
    Range
    Packing,
    Qty
    Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD746JNZ Status: Production 8 ld PDIP 8 Comm. Tube, 50 $4.74 $4.26 Y  Material Info PCN Purchase
    AD746JRZ Status: Production 8 ld SOIC 8 Comm. Tube, 98 $4.74 $4.37 Y  Material Info Notify Me Purchase
    AD746JZ-REEL7 Status: Last Time Buy 8 ld SOIC 8 Comm. Reel, 750 - - Y  Material Info PDN Purchase
    AD746SCHIPS Status: Production CHIPS OR DIE 0 Comm. Tray, 100 - $45.20 Y  Material Info Notify Me Contact ADI
    AD746SQ Status: Last Time Buy 8 ld CerDIP 8 Mil Tube, 48 $31.86 $27.08 N  Material Info PCN/PDN Purchase
    AD746SQ/883B Status: Production 8 ld CerDIP 8 Mil Tube, 48 $55.97 $50.37 N  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.

    AD746 Evaluation Board
    Model Description Price RoHS View PCN/ PDN Check Inventory/
    Purchase/Sample
    AD746JR-EBZ Status: Production 8-Lead SOIC Bare Evaluation Board $18.25 Yes -
    AD746JRZ Status: Production 8-Lead SOIC $9.46 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

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