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  5. AD8548

Data Sheet Rev. C
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Overview

Features and Benefits

  • Micropower at high voltage (18V): 22 µA maximum 
  • Low input bias current: 20 pA maximum
  • Gain bandwidth product: 240 kHz at AV =100 typical
  • −3 dB closed-loop bandwidth: 310 kHz
  • Slew rate: 80 V/ms
  • Large signal voltage gain: 110 dB minimum
  • Single-supply operation: 2.7 V to 18 V
  • Dual-supply operation: ±1.35 V to ±9 V
  • Unity-gain stable
  • Excellent electromagnetic interference immunity
  • Unity-gain crossover: 240 kHz

Product Details

The AD8546 and AD8548 are dual and quad micropower, high input impedance amplifiers optimized for low power and wide operating supply voltage range applications.

The AD8546 / AD8548 rail-to-rail input/output (RRIO) feature provides increased dynamic range to drive low frequency data converters, making these amplifiers ideal for dc gain and buffering of sensor front ends or high impedance input sources used in wireless or remote sensors or transmitters.

The low supply current specification (22 µA) of the AD8546 / AD8548 over a wide operating voltage range of 2.7 V to 18 V or dual supplies (±1.35 V to ±9 V) makes these amplifiers useful for a variety of battery-powered, portable applications, such as ECGs, pulse monitors, glucose meters, smoke and fire detectors, vibration monitors, and backup battery sensors.

The AD8546 / AD8548 are specified over the extended industrial temperature range of −40°C to +125°C. The AD8546 is available in an 8-lead MSOP package; the AD8548 is available in a 14-lead SOIC_N package.

APPLICATIONS

  • Portable medical equipment
  • Remote sensors
  • Transimpedance amplifiers
  • Current monitors
  • 4 mA to 20 mA loop drivers
  • Buffer/level shifting

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This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.

Evaluation Kits (1)

Documentation & Resources

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    Tools & Simulations

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    Design Resources

    ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well.  "Zero defects" for shipped products is always our goal.View our quality and reliability program and certifications for more information.

    Part Number Material Declaration Reliability Data Pin/Package Drawing CAD Symbols, Footprints & 3D Models
    AD8548ARZ Material Declaration Reliability Data 14-Lead SOIC
    AD8548ARZ-R7 Material Declaration Reliability Data 14-Lead SOIC
    AD8548ARZ-RL Material Declaration Reliability Data 14-Lead SOIC
    Wafer Fabrication Data

    Support & Discussions

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