AD8639
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AD8639

16V Dual Auto-Zero, Rail-to-Rail Output, Precision Amplifier

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Part Details
Part Models 11
1ku List Price Starting From $2.19
Features
  • Low Offset Voltage: 9 μV maximum
  • Offset drift: 0.04 μV/°C maximum
  • Rail-to-Rail output swing
  • 5 V to 16 V single-supply or ±2.5 V to ±8 V dual-supply operation
  • High gain: 136 dB typical
  • High CMRR: 133 dB typical
  • High PSRR: 143 dB typical
  • Very low input bias current: 40 pA maximum
  • Low supply current: 1.3 mA maximum
Additional Details
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The AD8638/AD8639 are single and dual wide bandwidth, auto-zero amplifiers featuring rail-to-rail output swing and low noise. These amplifiers have very low offset, drift, and bias current. Operation is fully specified from 5 V to 16 V single supply (±2.5 V to ±8 V dual supply).

The AD8638/AD8639 provide benefits previously found only in expensive zero-drift or chopper-stabilized amplifiers. Using the Analog Devices, Inc., topology, these auto-zero amplifiers combine low cost with high accuracy and low noise. No external capacitors are required. In addition, the AD8638/AD8639 greatly reduce the digital switching noise found in most chopper- stabilized amplifiers.

With a typical offset voltage of only 3 μV, drift of 0.01 μV/°C, and noise of 1.2 μV p-p (0.1 Hz to 10 Hz), the AD8638/AD8639 are suited for applications in which 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 ranges. Many systems can take advantage of the rail-to-rail output swing provided by the AD8638/AD8639 to maximize signal-to-noise ratio (SNR).

The AD8638/AD8639 are specified for the extended industrial temperature range (−40°C to +125°C). The single AD8638 is available in tiny 5-lead SOT-23 and 8-lead SOIC packages. The dual AD8639 is available in 8-lead MSOP, 8-lead SOIC, and 8-lead LFCSP packages.

The AD8638/AD8639 are members of a growing series of auto- zero op amps offered by Analog Devices (see Table 1 in the data sheet).

Applications

  • Pressure and position sensors
  • Strain gage amplifiers Medical instrumentation
  • Thermocouple amplifiers Automotive sensors
  • Precision references
  • Precision current sensing
  • Part Models 11
    1ku List Price Starting From $2.19

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    Documentation

    Documentation

    Part Model Pin/Package Drawing Documentation CAD Symbols, Footprints, and 3D Models
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    AD8639ARZ
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    AD8639ARZ-REEL7
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    AD8639WARZ
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    Product Lifecycle

    PCN

    Mar 22, 2021

    - 21_0001

    Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP

    AD8639ARMZ

    PRODUCTION

    AD8639ARMZ-R7

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    PRODUCTION

    Jan 5, 2015

    - 14_0246

    Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

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    May 15, 2012

    - 10_0006

    Halogen Free Material Change for mini SOIC Products

    AD8639ARMZ

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    AD8639ARMZ-R7

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    AD8639ARMZ-REEL

    PRODUCTION

    Jul 20, 2012

    - 12_0105

    Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor

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    Filter by Model

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    Part Models

    Product Lifecycle

    PCN

    Mar 22, 2021

    - 21_0001

    arrow down

    Addition of Amkor Philippines as an Alternate Site for Singulated MSOP and MSOP_EP

    AD8639ARMZ

    PRODUCTION

    AD8639ARMZ-R7

    PRODUCTION

    AD8639ARMZ-REEL

    PRODUCTION

    Jan 5, 2015

    - 14_0246

    arrow down

    Qualification of ASE Chungli, as an Alternate Assembly Site for Select MSOP Devices

    AD8639ARMZ

    PRODUCTION

    AD8639ARMZ-R7

    PRODUCTION

    AD8639ARMZ-REEL

    PRODUCTION

    May 15, 2012

    - 10_0006

    arrow down

    Halogen Free Material Change for mini SOIC Products

    AD8639ARMZ

    PRODUCTION

    AD8639ARMZ-R7

    PRODUCTION

    AD8639ARMZ-REEL

    PRODUCTION

    Jul 20, 2012

    - 12_0105

    arrow down

    Halogen Free Material Change for Select SOIC Narrow and Wide Body Products Assembled at Amkor

    AD8639WARZ

    PRODUCTION

    AD8639WARZ-R7

    PRODUCTION

    AD8639WARZ-RL

    PRODUCTION

    Software & Part Ecosystem

    Software & Part Ecosystem

    Evaluation Kit

    Evaluation Kits 1

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    EVAL-OPAMP-2

    EVAL-OPAMP-2 Evaluation Board

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    EVAL-OPAMP-2

    EVAL-OPAMP-2 Evaluation Board

    EVAL-OPAMP-2 Evaluation Board

    Product Detail

    The universal precision op amp evaluation boards have been designed and optimized for many circuit configurations allowing the users to best suit their applications. These boards are all RoHs compliant. See references below on what board to order by lead count and package.

    • EVAL-PRAOPAMP-2CPZ (dual 8-lead LFCSP) CP-8
    • EVAL-PRAOPAMP-2RMZ (dual 8-lead MSOP) RM-8
    • EVAL-PRAOPAMP-2RZ (dual 8-lead SOIC) R-8

    Tools & Simulations

    Tools & Simulations 3

    Reference Designs

    Reference Designs 1

    Isolated Current Sense Circuit

    Robust Completely Isolated Current Sense Circuit with Isolated Power Supply for Solar Photovoltaic Converters

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    CN0280

    Robust Completely Isolated Current Sense Circuit with Isolated Power Supply for Solar Photovoltaic Converters

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    Circuits from the lab

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    Robust Completely Isolated Current Sense Circuit with Isolated Power Supply for Solar Photovoltaic Converters

    Features and Benefits

    • Current sense for high currents
    • Photovoltaic applications
    • Completely Isolated
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    Design & Integration Tools

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