Quad, Serial 8-Bit DACs
with Rail-to-Rail Outputs
+5V
2
MAX873
4
0.1µF
6
+2.5V
SERIAL
INTERFACE
NOT SHOWN
R1
R2
330k
330k
0.1%
0.1%
+5V
0.1µF
27
6
3
ICL7611A 1
8
0.1µF
-5V
REFERENCE INPUTS
4 13
MAX510
DAC A
+5V
14
VDD
0.1µF
2
OUTA
DAC B
1
OUTB
DAC C
16
OUTC
0.1µF
DAC D
VSS
3
-5V
AGND
5
DGND
6
15
OUTD
Figure 15. MAX510 AGND Bias Circuit (Negative Offset)
REFERENCE INPUTS (VSS TO VDD)
5 4 17 16
DAC A
+5V
18
VDD
MAX509
0.1µF
2
OUTA
SERIAL
INTERFACE
NOT SHOWN
DAC B
DAC C
1
OUTB
20
OUTC
DAC D
VSS
3
0.1µF
AGND
6
AGND OR -5V
Figure 16. MAX509 Bipolar Output Circuit
DGND
8
19
OUTD
+5V
0.1µF
R1
R2
ICL7612A*
VOUT
+5V -5V
0.1µF
0.1µF
R1
R2
ICL7612A*
VOUT
0.1µF
-5V
*CONNECT ICL7612A PIN 8 TO AGND
18 ______________________________________________________________________________________