EVAL-AD7747EBZ Analog Devices Inc, EVAL-AD7747EBZ Datasheet - Page 5

• Manufacturer Part Number: EVAL-AD7747EBZ
• Description: 24-Bit Capacitance-to-Digital Converter Eval. Board
• Manufacturer: Analog Devices Inc

Specifications of EVAL-AD7747EBZ

• Silicon Manufacturer: Analog Devices
• Application Sub Type: Capacitance-to-Digital Converter
• Kit Application Type: Data Converter
• Silicon Core Number: AD7747
• Sensor Type: Touch, Capacitive
• Interface: I²C
• Voltage - Supply: 2.7 V ~ 5.25 V
• Embedded: No
• Utilized Ic / Part: AD7747
• Kit Contents: Board
• Rohs Compliant: Yes
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Sensitivity: -
• Sensing Range: -
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant

EVALUATION BOARD INTERFACING
Interfacing to the evaluation board is via a standard USB
connector, J1. J1 is used to connect the evaluation board to the
USB port of a PC. A standard USB connector cable is included
with the AD7747 evaluation board to allow the evaluation
board to interface with the USB port of the PC. Because the
board is powered via the USB connector, there is no need for an
external power supply, although one can be connected if
preferred via J2.
Communication between the AD7747 and the PC is over the
USB interface. The on-board USB controller controls this
communication.
Note that the AD7747 evaluation board software must be
installed (using the supplied AD7747 evaluation kit CD) before
connecting the evaluation board to the PC.
After the AD7747 evaluation board software has been installed,
connect the board to the PC via J1 on the AD7747 evaluation
board and the USB port on the PC using the supplied USB
Figure 5. Windows XP Warning
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connector cable. The green colored POWER LED should light
up on the evaluation board. The PC automatically finds the new
USB device and identifies it as AD774x Evaluation Board.
Click Next and follow the on-screen instructions that appear
automatically. During the installation process, if the window
shown in Figure 5 appears, click Continue Anyway to success-
fully complete the installation of the AD7747 evaluation board.
CONFIGURING THE AD7747 EVALUATION BOARD
The AD7747 evaluation board is configured to allow any
capacitive input with one terminal connected to ground to be
interfaced to CIN1 of the AD7747. To do this, connect one
terminal of the capacitive input to the SMB connector labeled
CIN1+ or CIN1−, and then connect the grounded terminal of
the capacitive input to the SMB connector labeled GND.
The AD7747 operating mode can then be configured using the
AD7747 evaluation software (see the Evaluation Board Software
section).
EVAL-AD7747