Analog Devices EVAL-AD7723CB Quick Start Manual page 5

CONNECTORS
There are six connectors on the AD7723 evaluation board
as outlined in Table II.
Table II. Connector Functions
Connector Function
P1 96-Way DIN Connector used to interface
to the Eval-Control board.
P2 3-Way Terminal Block used to supply
analog power and ground (+7.5V, -2.5V
and 0V), when these are not supplied
by the EVAL-CONTROL BOARD.
P3 10-Way Header.
P4 20-Way Header used to access the AD7723
serial interface signals when interfacing
to systems other than the
EVAL-CONTROL BOARD.
P5 40-Way IDC Connector used in parallel
mode to interface to systems other than
the EVAL-CONTROL BOARD.
P6 2-Way Terminal Block used to supply
digital power and ground (+5V and 0V),
when these are not being supplied by the
EVAL-CONTROL BOARD.
SOCKETS
There are two input sockets relevant to the operation of the
AD7723 on this evaluation board. The function of these
sockets is outlined in Table III.
Table III. Socket Functions
Socket Function
SK1 50 SMB socket for analog input signal.
SK2 50 SMB socket for external sampling
clock input.
Suitable cables for these sockets are available from
Pasternack Enterprises.
INTERFACING TO THE EVAL-AD7723CB
The EVAL-AD7723CB is designed to be interfaced to the
EVAL-CONTROL BOARD or to operate as a stand-alone
unit.
EVAL-CONTROL BOARD
The EVAL-CONTROL BOARD is available from Ana-
log Devices under the order entry "EVAL-CONTROL
BOARD". When operated with this control board, all
supplies (except +7.2V/-2.5V for AD8047 op-amps) and
control signals for operating the AD7723 are provided by
the EVAL-CONTROL BOARD when it is run under
control of the AD7723 software which is provided with the
AD7723 evaluation board package. This EVAL-CON-
TROL BOARD will also operate with all Analog Devices
evaluation boards which end with the letters CB in their
title.
The 96-way connector on the EVAL-AD7723CB plugs
directly into the 96-way connector on the EVAL-CON-
REV. B
TROL BOARD. No power supplies (except +7.2V/-2.5V
for AD8047 op-amps) are required in the system. The
EVAL-CONTROL BOARD generates all the required
supplies for itself and the EVAL-AD7723CB. The EVAL-
CONTROL BOARD is powered from a 12V ac trans-
former. This is a standard 12V ac transformer capable of
supplying 1A current and is available as an accessory from
Analog Devices under the following part numbers:
EVAL-110VAC-US:
EVAL-220VAC-UK:
EVAL-220VAC-EU:
These transformers are also available from other suppliers
including Digikey (U.S.) and Campbell Collins (U.K.).
Connection between the EVAL-CONTROL BOARD and
the serial port of a PC is via a standard RS-232 cable which
is provided as part of the EVAL-CONTROL BOARD
package. Please refer to the manual which accompanies the
EVAL-CONTROL BOARD for more details on the EVAL-
CONTROL BOARD package.
EVAL-CONTROL BOARD INTERFACING
Interfacing to the EVAL-CONTROL BOARD is via a
96-way connector, P1. The pinout for the P1 connector
is shown in Figure 2 and its pin designations are given
in Table IV.
.
1
A
B
C
1
Figure 2: Pin Configuration for the 96-Way Connector, P1
96-Way Connector Pin Description
D0-D15 Data Bus.
D Digital Ground.
GND
nected to the D
tion board. It allows the user to provide
the digital supply via the connector along
with the other digital signals.
Interrupt Request 2.
Chip Select.
+5VD Digital +5V Supply. These lines are con
nected to the VCC supply via link J35.
A Analog Ground. These lines are con
GND
nected to the A
board.
-5V Analog -5V Supply. These lines are con
nected to the V- supply for the op-amps
via link J6 if using AD8041 op-amps.
+5V Analog +5V Supply. These lines are con
nected to the V+ supply for the op-amps
via link J5 if using AD8041 op-amps and
to the AV
link J4.
– 5 –
EVAL-AD7723CB
For use in the U.S. or Japan
For use in the U.K.
For use in Europe
These lines are con
plane on the evalua
GND
plane on the evaluation
GND
supply for the AD7723 via
DD
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