Datasheet

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54321
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ti
12500 TI Boulevard. Dallas, Texas 75243
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Revision History
REV ECN Number Approved
DOCUMENT CONTROL #:
13
BlockDiagram.sch
A
DATE: 11-Nov-2004
ADS7881EVM/ADS7891EVM
6456873
+IN
EXT_REF
B_CS B_RD B_CONVST B_BYTE B_PWN/RST BUSY DB[13...0] B_APWD
Analog Circuits & A/D
Parallel Control
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
P2
Analog Input
1 2
3 4
5 6
7 8
9 10
11 12
13 14
15 16
17 18
19 20
P1
+VA
-VA
B_DB[13...0]
DB[13...0]
CS RD CONVST BYTE PWN/RST B_BUSY
BUSY
B_CS
B_RD
B_CONVST
B_BYTE
B_PWN/RST
+AVCC
+VA
-VA
+BVDD
A0 A1 A2 DC_CS A_PWD INTc
B_APWD
Power & Digital Buffer
J2
B_DB[13...0]
DB[13..0]
B_DB0
B_DB1
B_DB2
B_DB3
B_DB4
B_DB5
B_DB6
B_DB7
B_DB8
B_DB9
B_DB10
B_DB11
B_DB12
B_DB13
+AVCC
+BVDD
Lijoy Philipose
Lijoy Philipose
1
1
2
2
3
3
4
4
5
5
6
6
7
7
8
8
9
9
10
10
11
11
12
12
13
13
14
14
15
15
16
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17
17
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18
19
19
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23
23
24
24
25
25
26
26
27
27
28
28
29
29
30
30
31
31
32
32
P3
Data Bus
CS
RD
CONVST
BYTE
PWN/RST
B_BUSY
A0
A1
A2
1 2
3 4
5 6
7 8
9 10
J1
Power Supply
+VA -VA
+5VD
AGND
+AVCC
TP10
TP11
TP12
TP14
ADC Control
INTc
DC_CS
12
34
56
78
9
11
13
10
12
14
J3
A_PWD
DGND
W5
+3.3VD