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resources:eval:adr1399h-ebz [29 Oct 2021 14:00] Paul Blanchard minor formatting and typo correction |
resources:eval:adr1399h-ebz [23 Nov 2021 00:58] Paul Blanchard [Features] |
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**GENERAL DESCRIPTION** \\ | **GENERAL DESCRIPTION** \\ | ||
The ADR1399H-EBZ allows the evaluation of the ADR1399KHZ, ultra-stable 7.05V Shunt Voltage Reference in 4-lead TO-46 package. | The ADR1399H-EBZ allows the evaluation of the ADR1399KHZ, ultra-stable 7.05V Shunt Voltage Reference in 4-lead TO-46 package. | ||
- | The 4-layer board has had ground layers cut away under the DUT, ensuring high thermal insulation of the heated DUT. In the DUT area, only the bottom layer has a ground plane, and it is mesh rather than solid. | + | |
+ | The DUT 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 regulator outputs at “VPRE” or V+”. | 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 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. | The ultra-stable 7.05V is brought out to both banana jacks and to an edge mounted SMA connector. |