PIN CONFIGURATION
Top View
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
RSTSEL
RST
LOADDACS
R/W
A1
A0
CS
DGND
1
2
3
4
5
6
7
8
9
10
11
12
DAC7644
13
14
15
16
17
18
19
20
21
22
23
24
36
35
34
33
32
31
30
29
28
27
26
25
48
47
46
45
44
43
42
41
40
39
38
37
NC
NC
NC
NC
V
OUT
A Sense
V
OUT
A
V
REF
L AB Sense
V
REF
L AB
V
REF
H AB
V
REF
H AB Sense
V
OUT
B Sense
V
OUT
B
V
OUT
C Sense
V
OUT
C
V
REF
H CD Sense
V
REF
H CD
V
REF
L CD
V
REF
L CD Sense
V
OUT
D Sense
V
OUT
D
V
SS
AGND
V
CC
V
DD
SSOP
PIN DESCRIPTIONS
PIN
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
NAME
DB15
DB14
DB13
DB12
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
RSTSEL
DESCRIPTION
Data Bit 15, MSB
Data Bit 14
Data Bit 13
Data Bit 12
Data Bit 11
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
Reset Select. Determines the action of RST. If
HIGH, a RST command will set the DAC registers to
mid-scale. If LOW, a RST command will set the DAC
registers to zero.
Reset, Rising Edge Triggered. Depending on the
state of RSTSEL, the DAC registers are set to either
mid-scale or zero.
DAC Output Registers Load Control. Rising edge
triggered.
Enabled by the CS, Controls Data Read and Write
from the Input Registers.
Enabled by the CS, in Combination With A0 Selects
the Individual DAC Input Registers.
Enabled by the CS, in Combination With A1 Selects
the Individual DAC Input Registers.
37
38
39
40
41
42
43
44
45
46
47
48
V
OUT
B
V
OUT
B Sense
V
REF
H AB Sense
V
REF
H AB
V
REF
L AB
V
REF
L AB Sense
V
OUT
A
V
OUT
A Sense
NC
NC
NC
NC
31
32
33
34
35
36
V
REF
L CD Sense
V
REF
L CD
V
REF
H CD
V
REF
H CD Sense
V
OUT
C
V
OUT
C Sense
PIN
23
24
25
26
27
28
29
30
NAME
CS
DGND
V
DD
V
CC
AGND
V
SS
V
OUT
D
V
OUT
D Sense
DESCRIPTION
Chip Select. Active LOW.
Digital Ground
Positive Power Supply (digital)
Positive Power Supply (analog)
Analog Ground
Negative Power Supply
DAC D Voltage Output
DAC D’s Output Amplifier Inverting Input. Used to
close the feedback loop at the load.
DAC C and D Reference Low Sense Input
DAC C and D Reference Low Input
DAC C and D Reference High Input
DAC C and D Reference High Sense Input
DAC C Voltage Output
DAC C’s Output Amplifier Inverting Input. Used to
close the feedback loop at the load.
DAC B Voltage Output
DAC B’s Output Amplifier Inverting Input. Used to
close the feedback loop at the load.
DAC A and B Reference High Sense Input
DAC A and B Reference High Input
DAC A and B Reference Low Input
DAC A and B Reference Low Sense Input
DAC A Voltage Input
DAC A’s Output Amplifier Inverting Input. Used to
close the feedback loop at the load.
No Connection
No Connection
No Connection
No Connection
®
18
RST
19
20
21
22
LOADDACS
R/W
A1
A0
5
DAC7644
BURR-BROWN [ BURR-BROWN CORPORATION ]
