EVAL-AD7484_15 Datasheet, PDF (6/20 Pages) Analog Devices – Evaluation Board for 3 MSPS, 14-Bit SAR ADC

EVAL-AD7484
EVALUATION BOARD INTERFACING
Interfacing to the evaluation board is via a 96-way connector J1.
J1 is used to connect the evaluation board to the EVAL-
CONTROL BRD2 or other system. The pinout for the J1
connector is shown in Figure 2, and its pin designators are given
in Table 3.
1
32
A
B
C
1
32
Figure 2. Pin Configuration for the 96-Way Connector J1
Table 3. J1 Connector Pin Designators
Pin
Description
FL0
Flag Zero. This output is connected to the CONVST pin
of the AD7484 via LK1.
IRQ2
Interrupt Request 2. This input is connected to the
BUSY output of the AD7484 through the inverter U7.
RD
Read. An output is connected to the RD pin of the
AD7484 via LK23.
WR
Write. An output is connected to the Write input of
the AD7484 via LK24 through the inverter U4.
CS
Chip Select. An output is connected to the CS input
pin of the AD7484 via LK22.
D0 to
D14
Data lines. These bidirectional data lines are con-
nected to the data bus of the AD7484 through the
buffer U2.
DGND Digital Ground. These lines are connected to the
ground plane of the AD7484 evaluation board.
AGND Analog Ground. These lines are connected to the
ground plane of the AD7484 evaluation board.
DVDD
AVDD
Digital +5 V supply. These lines are connected to the
DVDD supply line on the board via LK16.
Analog +5 V supply. These lines are connected to the
AVDD supply line on the board via LK19.
+12 V
+12 V supply. These lines are connected to the +12 V
supply line on the board via LK20.
−12 V
−12 V supply. These lines are connected to the −12 V
supply line on the board via LK21.
Table 4. 96-Way Connector Pin Functions¹
Pin ROW A
ROW B
1
2
D0
3
D1
4
DGND
DGND
5
D2
6
D3
7
D4
8
DVDD Edge
9
RD
DVDD Edge
D5
10
D6
11
D7
12 DGND
DGND
13
D8
14
D9
15
D10
16 DGND
DGND
17 FL0
D11
18 D12
D13
19
20 DGND
DGND
21 AGND
AGND
22 AGND
AGND
23 AGND
AGND
24 AGND
AGND
25 AGND
AGND
26 AGND
AGND
27
AGND
28
AGND
29 AGND
AGND
30 −12 V
AGND
31
32
AVDD
AVDD
ROW C
DGND
DVDD Edge
WR
CS
DGND
DGND
IRQ2
D14
DGND
AGND
AGND
AGND
AGND
AGND
AGND
AGND
+12 V
AVDD
1 _{The unused pins of the 96-way connector are not shown.}
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