AD746

PRODUCTION

Dual Precision, 500 ns Settling, BiFET Op Amp

Data Sheet (Rev. B) Product Selection Table
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Overview

  • 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 

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

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    AD746
    Dual Precision, 500 ns Settling, BiFET Op Amp
    AD746 Functional Block Diagram
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    Documentation

    Data Sheet 1

    User Guide 1

    Application Note 3

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    Tools & Simulations

    LTspice

    Models for the following parts are available in LTspice:

    • AD746

    VRMS/dBm/dBu/dBV calculators

    A utility to convert between standard units of power measurement and signal strength.

    Open Tool

    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.

    Open Tool

    Analog Photodiode Wizard

    Use Photodiode Wizard to design a transimpedance amplifier circuit to interface with a photodiode. Select a photodiode from the library included in the tool, or enter custom photodiode specifications. Quickly observe tradeoffs between Bandwidth, Peaking (Q), and ENOB/SNR. Modify circuit parameters, and immediately see results in plots for pulse response, frequency response, and noise gain.

    Open Tool

    Analog Filter Wizard

    Use the Analog Filter Wizard to design low-pass, high-pass, or band-pass filters with actual op amps in minutes. As you progress through the design process, you can observe the characteristics of your filter design from ideal specifications to real world circuit behavior. Quickly evaluate the tradeoffs in op amp specifications - including gain-bandwidth, noise, and supply current – to determine the best filter design for your requirements.

    Open Tool

    AD746 SPICE Macro Models 5

    LTspice

    LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.

    Evaluation Kits

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    EVAL-HSAMP-2

    Universal Evaluation Board for Dual High Speed Operational Amplifiers

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    Product Details

    The Universal Dual High Speed Amplifier Evaluation Boards are bare boards that enables users to quickly prototype a variety of amplifier circuits, which minimizes risk and reduces time to market. These boards are all RoHs Compliant. See ordering guide below on what board to order by lead count and package.

    Resources
    EVAL-HSAMP-2
    Universal Evaluation Board for Dual High Speed Operational Amplifiers
    EVAL-HSAMP-2 Group EVAL-HSAMP-2CPZ-10 EVAL-HSAMP-2RMZ-10 EVAL-HSAMP-2RMZ-8 EVAL-HSAMP-2RZ-8

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