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Rev. Pr E
5
PIN CONFIGURATION
68-Lead Leaded Ceramic Chip Carrier
PIN FUNCTION DESCRIPTIONS
Pin No.
Name
Function
1, 35
SHIELD
Internal Ground Shield between channels
2,3,9,10,13,16
AGNDA
A Channel Analog Ground. A and B grounds should be connected as close to the device as possible
4
A-IN
Inverting Differential Input (Gain = 1)
5
A+IN
Non-Inverting Differential Input (Gain = 1)
6
AMP-OUT-A
Single-ended amplifier output (Gain = 2)
7
AMP-IN-A-1
Analog Input for A side ADC (nominally
± 0.5V)
8
AMP-IN-A-2
Analog Input for A side ADC (nominally
± 1.0V)
11
-5VAA
Analog Negative Supply Voltage (nominally -5.0V or -5.2V)
12
AV
CC
Analog Positive Supply Voltage (nominally +5.0V)
14
ENCODEA
Complement of Encode; differential input
15
ENCODEA
Encode Input; conversion initiated on rising edge
17
DV
CC
Digital Positive Supply Voltage (nominally +5.0V/+3.3V)
18,19,37,38
NC
No Connect
20-25, 28-33
D0A-D11A
Digital Outputs for ADC A. D0 (LSB)
26,27
DNGDA
A Channel Digital Ground
34
DROUTA
Data Ready A Output
36
DROUTB
Data Ready B Output
39-42,45-52
D0B-D11B
Digital Outputs for ADC B. D0 (LSB)
43,44
DGNDB
B Channel Digital Ground
53
DV
CC
Digital Positive Supply Voltage (nominally +5.0V/+3.3V)
54,57,60,61,67,68
AGNDB
B Channel Analog Ground. A and B grounds should be connected as close to the device as possible
55
ENCODEB
Encode Input; conversion initiated on rising edge
56
ENCODEB
Complement of Encode; differential input
58
-5VAB
Analog Negative Supply Voltage (nominally -5.0V or -5.2V)
59
AV
CC
Analog Positive Supply Voltage (nominally +5.0V)
62
AMP-IN-B-2
Analog Input for B side ADC (nominally
± 1.0V)
63
AMP-IN-B-1
Analog Input for B side ADC (nominally
± 0.5V)
64
AMP-OUT-B
Single-ended amplifier output (Gain = 2)
65
B+IN
Non-Inverting Differential Input (Gain = 1)
66
B-IN
Inverting Differential Input (Gain =1)
AD13280
60
59
58
56
57
55
54
53
52
50
51
49
48
47
46
44
45
1
2
3
4
5
6
7
8
9
67
68
65
66
63
64
61
62
10
11
12
14
13
1 5
16
17
1 8
20
19
21
22
23
2 4
26
25
37
36
39
38
41
40
43
42
28
27
30
29
32
31
34
33
35
S
H
IE
LD
A
G
N
D
A
G
N
D
B
DGNDB
D
G
N
D
B
D0A ( LSB)
AGN DA
AGND A
A
N
A
G
N
D
A
G
N
D
A
AGN DA
-5VAA
A
G
N
D
B
AGN DB
EN CODEA
D 2A
D 3A
D 4A
D5A
D
6A
D
7
A
D
8
A
D
9
A
D
1
0A
D
G
N
D
A
D
0
B
(L
S
B
)
D
1
B
D
2
B
D
3
B
D4B
D5B
D6B
D7B
D8B
D11B- MSB
D10B
D9B
AD13280
Top View
(Not to Scale)
P IN 1
D 1A
A
+
IN
A
M
P
-O
U
T
-A
A
M
P
-I
N
-A
-1
A
M
P
-I
N
-A
-2
EN CODEA
NC
DGNDA
D
1
1A
-M
S
B
D
R
O
U
T
A
S
H
IE
L
D
R
O
U
T
B
N
C
N
C
AGN DB
-5VAB
ENCODEB
AVCC
ENCODEB
A
G
N
D
B
-I
N
B
+
IN
A
M
P
-O
U
T
-B
A
M
P
-I
N
-B
-1
A
M
P
-I
N
-B
-2
AVC C
D VC C
DVCC