AD587 Battery Powered 10V Reference Tutorial

Following on from a previous post discussing the Analog Devices AD587 precision 10.000V voltage reference, I built a portable device to utilise the chip.

Some requirements of the project were:

  • 10.000V ±5mV output
  • 10mA output
  • Battery operated device
  • Visual, low battery indication
  • Small, aluminium housing
  • Clear front panel
  • Low cost (under $50), readily available components

A low battery indication was a desired feature to prevent the device being used in an important test and the battery level drops low and compromises the AD587’s performance. A simple green LED will suffice. Output performance of 10.000V (± 5mV) couldn’t be compromised so there is no protection to prevent high current draw from the chip, I’ll just have to be sensible.

Battery powered AD587 10V reference.
Battery powered AD587 10V reference.

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