OBSOLETE PRODUCT — ADR520:  High Precision Shunt Mode Voltage Reference (2.048 V)

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

    ADR520:  High Precision Shunt Mode Voltage Reference (2.048 V)

    Product Description

    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

    REPLACEMENT PARTS

    Rochester Electronics is the only authorized source of Analog Devices' products that have previously been discontinued or have become obsolete. Product availability should be checked directly with Rochester Electronics.

    Specifications

    Vout 2.048
    Initial Accuracy (%) 0.2
    Ref Out TC (ppm/C) 40ppm/C
    Initial Accuracy (mV) 4mV
    0.1-10 Hz Noise (µV p-p) 14µV p-p
    Ref Output Current (mA) n/a
    Min V Supply (V) n/a
    Max V Supply (V) n/a
    Isupply (max) 50µA
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