Analog Devices EVAL-AD7723CB Quick Start Manual page 6

EVAL-AD7723CB
Table IV. 96-Way Connector Pin Functions.
ROW A
1
2
3
4 D G N D
5
6
7
8 +5VD
9
10
11
12 D G N D
13
14
15
16 D G N D
17
18 D12
19
20 D G N D
21 AGND
22 AGND
23 AGND
24 AGND
25 AGND
26 AGND
27
28
29 AGND
30
31 -5V
32 +5V
Note : The unused pins of the 96-way connector are not shown.
ROWB ROWC
D 0
D 1
D G N D D G N D
D 2
D 3
D 4
+5VD +5VD
D 5
D 6 C S
D 7
D G N D D G N D
D 8
D 9
D10
D G N D D G N D
D11 IRQ2
D13 D14
D15
D G N D D G N D
AGND AGND
AGND AGND
AGND AGND
AGND AGND
AGND AGND
AGND AGND
AGND
AGND
AGND AGND
AGND
-5V -5V
+5V +5V
OPERATING AS A STAND-ALONE UNIT
It is possible to operate the board as a stand-alone unit.
When using the evaluation board as a stand-alone unit,
external supplies must be connected to the 3-way power
connector (P2). If using AD8047 op-amps (supplied on
the evaluation board), supplies of +7.5V/0V/-2.5V are
required. If using the AD8041 op-amps (not supplied),
supplies of +5V/0V are required.
AD8041 op-amps will cause a 2dB degradation in the
AD7723's SNR. An external +5V and D
be connected to a 2-pin power connector (P6). All power
supplies are decoupled to the relevant ground plane with a
22µF tantalum capacitor and a 0.1µF ceramic capacitor.
Each device power pin is also decoupled with a 0.1µF
capacitor to the relevant ground plane. The board can be
configured for either parallel or serial mode operation. In
parallel mode, a 16-bit register, 74FCT162374, latches
the conversion results to a 40-pin IDC connector (P5). In
serial mode, the AD7723's serial interface signals are
buffered with a 74FCT162244 and are available from a 20-
pin header (P4). The user must use their own connectors
to interface to either of the connectors to gain access to the
AD7723 signals.
– 6 –
Please note that using
(0V) must also
GND
REV. B