UG-515 Datasheet, PDF (5/28 Pages) Analog Devices – Full-featured evaluation board

Evaluation Board User Guide
CN-0201 for the complete information on generating these
±15 V supplies from a +5 V single supply. The differential input
common-mode voltage (VCM) range changes according to the
maximum input range selected and the high voltage power
supplies (VDDH and VSSH). In other words, the specified
operating input voltage of any input pin requires 2.5 V of
headroom from the VDDH and VSSH supplies.
The evaluation board ground plane consists of a solid plane
on one PCB layer shared on another layer with the power plane.
To attain high-resolution performance, the board was designed
to ensure that all digital ground return paths do not cross the
analog ground return paths, that is, all analog on one side and
digital on the other.
EVALUATION BOARD SCHEMATICS/PCB LAYOUT
The evaluation board is a 6-layer board carefully laid out and
tested to demonstrate the specific high accuracy performance
of the ADAS3023 devices. The Evaluation Board Schematics
and Artwork section of this user guide shows the schematics of
the evaluation board.
BASIC HARDWARE SETUP
The ADAS3023 evaluation board connects to the EVAL-CED1Z
converter evaluation and demonstration board. The EVAL-
CED1Z board is the controller board, which is the communi-
cation link between the PC and the main evaluation board.
SIGNAL SOURCE
EVAL-ADAS3023EDZ
EVAL-ADAS3023EDZ
Figure 5 shows a photograph of the connections made between
the ADAS3023 daughter board and the EVAL-CED1Z board.
1. Before connecting power, ensure that the EVAL-
ADAS3023EDZ and the EVAL-CED1Z boards are
connected firmly together.
2. Connect the power supplies on the EVAL-ADAS3023EDZ
board. The EVAL-ADAS3023EDZ requires external power
supplies of ±15 V. Connect them from a bench top power
supply.
3. Before connecting the EVAL-CED1Z board to your PC,
ensure that the ADAS3023 software has been installed
from the Analog Devices website. The full software
installation procedure is detailed in the Evaluation Board
Software section.
4. Connect the EVAL-CED1Z board to the PC via the USB
cable enclosed in the EVAL-SDPCB1Z kit. If using a
Windows® XP platform, you may need to search for the
EVAL-CED1Z drivers. Choose to automatically search for
the drivers for the EVAL-CED1Z board if prompted by the
operating system.
5. Proceed to the Software Installation section to install the
software. Note that the EVAL-CED1Z board must not
be connected to the PC’s USB port until the software is
installed. The 7 V dc supply should be connected to power
up the board and make sure that the green LED lit.
EVAL-CED1Z
PC
USB
Figure 3. Hardware Configuration—Setting Up the EVAL-ADAS3023EDZ
TO WALL WART
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