PIN CONFIGURATION
Top View
CH C0+
CH C1+
CH C0–
CH C1–
CH A0+
CH B0+
CH B1+
CH A1+
37
36 +V
A
35 AGND
34 REFIN
33 REFOUT
32 RESET
31 A0
ADS7864
DB11
DB10
DB9
7
8
9
30 A1
29 A2
28 BYTE
27 HOLDA
26 HOLDB
25 HOLDC
13
14
15
16
17
18
19
20
21
22
23
24
CH A0–
CH B0–
CH B1–
48
+V
A
AGND
DB15
DB14
DB13
DB12
1
2
3
4
5
6
47
46
45
44
43
42
41
40
39
38
DB8 10
DB7 11
DB6 12
DB5
DB4
DB3
DB2
DB1
DB0
BUSY
DGND
RD
CH A1–
PIN DESCRIPTIONS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
NAME
+V
A
AGND
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
BUSY
DGND
+V
D
CLOCK
RD
CS
®
DESCRIPTION
Analog Power Supply. Normally +5V.
Analog Ground
Data Valid Output: “1” for data valid; “0” for invalid
data.
Channel Address Output Pin (see channel truth
table)
Channel Address Output Pin (see channel truth
table)
Channel Address Output Pin (see channel truth
table)
Data Bit 11 - MSB
Data Bit 10
Data Bit 9
Data Bit 8
Data Bit 7
Data Bit 6
Data Bit 5
Data Bit 4
Data Bit 3
Data Bit 2
Data Bit 1
Data Bit 0 - LSB
Low when a conversion is in progress.
Digital Ground
Digital Power Supply, +5VDC
An external clock must be applied to the CLOCK
input.
RD Input. Enables the parallel output when used in
conjunction with chip select.
Chip Select
PIN
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
NAME
HOLDC
HOLDB
HOLDA
BYTE
A2
A1
A0
RESET
REFOUT
REFIN
AGND
+V
A
CH A1+
CH A1–
CH B1+
CH B1–
CH C1+
CH C1–
CH C0–
CH C0+
CH B0–
CH B0+
CH A0–
CH A0+
CLOCK
+V
D
DESCRIPTION
Places Channels C0 and C1 in hold mode.
Places Channels B0 and B1 in hold mode.
Places Channels A0 and A1 in hold mode.
2 x 8 Output Capability. Active HIGH
A2 Address/Mode Select Pin (see Address/Mode Truth
table).
A1 Address/Mode Select Pin (see Address/Mode Truth
Table).
A0 Address/Mode Select Pin (see Address/Mode Truth
Table).
Reset Pin
Reference Out
Reference In
Analog Ground
Analog Power Supply. Normally +5V.
Noninverting Input Channel A1
Inverting Input Channel A1
Noninverting Input Channel B1
Inverting Input Channel B1
Noninverting Input Channel C1
Inverting Input Channel C1
Inverting Input Channel C0
Noninverting Input Channel C0
Inverting Input Channel B0
Noninverting Input Channel B0
Inverting Input Channel A0
Noninverting Input Channel A0
ADS7864
4
CS
BURR-BROWN [ BURR-BROWN CORPORATION ]
