Datasheet

DAC7642, DAC7643
13
SBAS233
www.ti.com
FIGURE 2. Basic Single-Supply Operation of the DAC7642 and DAC7643.
V
CC
GND
DB15
DB14
DB13
DB12
DB11
DB10
V
SS
DACSEL
RST
LDAC
R/W
CS
DB0
DB1
1
2
3
4
5
6
7
8
24
23
22
21
20
19
18
17
DAC7642
DAC7643
9 10 11 12 13 14 15 16
DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2
32
0.1µF
31 30 29 28
+2.5V
27 26 25
V
OUTA
V
OUTA
Sense
V
REFL
Sense
V
REFL
V
REFH
V
REFH
Sense
V
OUTB
Sense
V
OUTB
DATA BUS
DATA BUS
CHIP SELECT
READ/WRITE
LOAD DAC REGISTERS
RESET DAC REGISTERS
SELECT DAC CHANNEL
0V to +2.5V
0V to +2.5V
+5V
1µF
FIGURE 3. Basic Dual-Supply Operation of the DAC7642 and DAC7643.
24
23
22
21
20
19
18
17
0.1µF1µF
–5V
DAC7642
DAC7643
9 10 11 12 13 14 15 16
32 31 30 29
28
+2.5V
27 26 25
V
OUTA
V
OUTA
Sense
V
REFL
Sense
V
REFL
V
REFH
V
REFH
Sense
V
OUTB
Sense
V
OUTB
–2.5V to
+2.5V
–2.5V
–2.5V to
+2.5V
V
CC
GND
DB15
DB14
DB13
DB12
DB11
DB10
V
SS
DACSEL
RST
LDAC
R/W
CS
DB0
DB1
DB9 DB8 DB7 DB6 DB5 DB4 DB3 DB2
1
2
3
4
5
6
7
8
0.1µF
DATA BUS
+5V
1µF
DATA BUS
CHIP SELECT
READ/WRITE
LOAD DAC REGISTERS
RESET DAC REGISTERS
SELECT DAC CHANNEL