This version is outdated by a newer approved version.
This version (08 Oct 2013 15:28) was approved by Robin Getz, haijiao fan.The Previously approved version (08 Oct 2013 14:42) is available.
This version (08 Oct 2013 15:28) was approved by Robin Getz, haijiao fan.The Previously approved version (08 Oct 2013 14:42) is available.This is an old revision of the document!
Table of Contents
AD-FMCOMMS2-EBZ Hardware
Downloads
This is the latest and greatest Rev “C” of this board, and is ready for production. Note that the Baluns on the Rev C board (T101-T104) are Johanson Technology's 2450BL15B050E 2.45 GHz Balun. This balun is rated for a operating frequency of 2400~2500 MHz. If you want to evaluate the part outside of this frequency range, an alternative balun should be installed. This is described inside the “AD9361 RF Port Interface” document, which is a part of the full AD9361 documentation package. The test results were taken with Rev C, using the Johanson Technology's 2450BL15B050E balun.
- Rev C Allegro Board File (This file is compressed). Get the Allegro FREE Physical Viewer (You need 16.5 or higher).
Picture and Main components
Outline
For those that don't want to load up the Allegro viewer, here is a basic outline/component placements of the board. While this board does meet parts of the VITA-57.1 (FMC) specifications, there are many things it violates, and is not designed to be a form/fit/function board.
- The FMC cutout for the bezel is missing (so we could space the SMA connectors out as far as possible, and achieve maximum isolation between the channels.
- The mounting holes near the end of the board with the connectors is also in the wrong place (so it didn't effect the RF path between the connectors and the AD9361.
- The FMC height specification on the top side of the board is violated to put some 90 degree SMA connectors.
Size
The size of the board (not including the SMA connectors, which project beyond the edge of the board) is 73.3mm x 69mm. This is under the FMC specifications of 84mm x 69mm). The mounting holes are not compliant with the FMC standard, and are shown below.
Layers
The AD-FMCOMMS2-EBZ is a 10 layer board.
Design Cross Section
| Subclass Name | Type | Material | Thickness (MIL) | Conductivity (mho/cm) | Dielectric Constant | Loss Tangent | Shield | Width (MIL) |
|---|---|---|---|---|---|---|---|---|
| SURFACE | AIR | 0 | 1 | 0 | ||||
| TOP | CONDUCTOR | COPPER | 2.025 | 595900 | 1 | 0 | 8.00 | |
| DIELECTRIC | FR-4 | 8 | 0 | 3.38 | 0.035 | |||
| L2_GND | PLANE | COPPER | 1.35 | 595900 | 1 | 0.035 | Y | |
| DIELECTRIC | BT_EPOXY | 3 | 0 | 4.10 | 0.02 | |||
| L3_PWR | PLANE | COPPER | 1.35 | 595900 | 1 | 0.035 | Y | |
| DIELECTRIC | FR-4 | 3 | 0 | 4.10 | 0.035 | |||
| L4_GND | PLANE | COPPER | 1.35 | 595900 | 1 | 0.035 | Y | |
| DIELECTRIC | BT_EPOXY | 4.60 | 0 | 4.10 | 0.02 | |||
| L5_SIG | CONDUCTOR | COPPER | 1.35 | 595900 | 1 | 0.035 | 3.80 | |
| DIELECTRIC | FR-4 | 8 | 0 | 4.10 | 0.035 | |||
| L6_SIG | CONDUCTOR | COPPER | 1.35 | 595900 | 1 | 0.035 | 3.80 | |
| DIELECTRIC | BT_EPOXY | 4.60 | 0 | 4.10 | 0.02 | |||
| L7_GND | PLANE | COPPER | 1.35 | 595900 | 1 | 0.035 | Y | |
| DIELECTRIC | FR-4 | 3 | 0 | 4.10 | 0.035 | |||
| L8_PWR | PLANE | COPPER | 1.35 | 595900 | 1 | 0.035 | Y | |
| DIELECTRIC | BT_EPOXY | 3 | 0 | 4.10 | 0.02 | |||
| L9_GND | PLANE | COPPER | 1.35 | 595900 | 1 | 0.035 | Y | |
| DIELECTRIC | FR-4 | 8 | 0 | 3.38 | 0.035 | |||
| BOTTOM | CONDUCTOR | COPPER | 2.025 | 595900 | 1 | 0 | 8.00 | |
| SURFACE | AIR | 0 | 1 | 0 |
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resources/eval/user-guides/ad-fmcomms2-ebz/hardware.1381238899.txt.gz · Last modified: 08 Oct 2013 15:28 by Robin Getz