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ADR540

Obsolete

High Precision Shunt Mode Voltage Reference (4.096 V)

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Overview

  • Ultracompact SC70 and SOT-23-3 packages
  • Temperature coefficient: 40 ppm/°C (maximum)
  • 2× the temperature coefficient improvement over the LM4040
  • Pin compatible with LM4040/LM4050
  • Initial accuracy: ±0.2%
  • Low output voltage noise: 14 μV p-p @
    2.5 V output
  • No external capacitor required
  • Operating current range: 50 μA to 15 mA
  • Industrial temperature range: −40°C to +85°C

Designed for space-critical applications, the ADR520/ADR525/ ADR530/ADR540/ADR550 are high precision shunt voltage references, housed in ultrasmall SC70 and SOT-23-3 packages. These references feature low temperature drift of 40 ppm/°C, an initial accuracy of better than ±0.2%, and ultralow output noise of 14 μV p-p.

Available in output voltages of 2.048 V, 2.5 V, 3.0 V, 4.096 V, and 5.0 V, the advanced design of the ADR520/ADR525/ ADR530/ADR540/ADR550 eliminates the need for compensa-tion by an external capacitor, yet the references are stable with any capacitive load. The minimum operating current increases from a mere 50 μA to a maximum of 15 mA. This low operating current and ease of use make these references ideally suited for handheld, battery-powered applications.

A trim terminal is available on the ADR520/ADR525/ADR530/ ADR540/ADR550 to allow adjustment of the output voltage over a ±0.5% range, without affecting the temperature coefficient of the device. This feature provides users with the flexibility to trim out any system errors.

Applications

  • Portable, battery-powered equipment
  • Automotive
  • Power supplies
  • Data acquisition systems
  • Instrumentation and process control
  • Energy measurement
  • Data Sheet, Rev. E, 6/08

    ADR540
    High Precision Shunt Mode Voltage Reference (4.096 V)
    49250130865799ADR520-25-30-40-50-pcl
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