ADR1399E-EBZ

ADR1399E-EBZ allows the evaluation of the ADR1399KEZ, ultra-stable 7.05V shunt voltage reference in 8-pin LCC package. The DUT 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. 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+”.

• Enables efficient prototyping
• User defined circuit configuration
• Edge mounted SMA connector
• Simple connection to test equipment and other circuits
• Ultra-stable 7.05V is brought out to both banana jacks and to an edge mounted SMA connector