Features and Benefits

  • Enables efficient prototyping
  • User defined circuit configuration
  • Edge mounted SMA connector
  • Simple connection to test equipment and other circuits
  • RoHS compliant

Product Details

The ADR1399E-EBZ and ADR1399H-EBZ allow the evaluation of the ADR1399KEZ, ultra-stable 7.05V Shunt Voltage Reference. The ADR1399E-EBZ is in 8-Pin LCC package and the ADR1399H-EBZ is in 4-lead TO-46 package.

The DUT on the ADR1399E-EBZ is on a paddle shaped “island” area of PCB for less stress from board flexure and also for thermal isolation. It is inside a captive acrylic enclosure to reduce air flow and further improve thermal isolation. Ground planes are removed under the DUT except for a hatch ground on the bottom side, again to prevent excessive thermal conduction away from the oven-ized reference. On L2 there is a small solid copper area under the reference voltage pins to help ensure an isothermal environment.

The DUT on the ADR1399H-EBZ is elevated on its leads in order to increase the thermal isolation from the 4-layer board ground planes.

Isolated power means that the Reference output is effectively floated, removing the likelihood of ground loops. The isolation is bridged only by a 1Meg resistor. Power may be supplied via the USB-C cable, or 5V may be applied to “VUSB”, or power may be back driven onto the LTM8048 regulator outputs at “VPRE” or V+”. The ultra-stable 7.05V is brought out to both banana jacks and to an edge mounted SMA connector.

Applicable Parts

Getting Started


  • USB-C Compatible charger / power supply, or Benchtop Lab Supply
  • Several Digit DMM (such as HP3458 or Keithley 2001)
  • Two banana plug cables, or One SMA to meter-compatible cable


Pricing displayed is based on 1-piece.

Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.