+5V
V
CC1
1Ω
ADS7807
100nF
V
DIG
28
VANA 27
BUSY 24
R/C 22
BYTE 21
BYTE
D0 17
5
D2 15
+2.2µF
6
7
8
25 PWRD
26 REFD
23 CS
20 TAG
SCLK 18
100Ω
D
1A
R/T
1A
V
SA
G
B
R/T
1B
D
1B
12 RCLK
13 G
+5V
V
CC1
SDATA 19
100Ω
ISO150
DGND 14
D7
9
D
2A
R/T G
A
2A
D6 10
+5V
11 SRCLK
V
SB
R/T
2B
D
2B
10 SRCLR
EXT/INT
D5 11
SB/BTC
D4 12
+5V
V
CC1
AGND
2
D3 13
D
1A
R/T
1A
V
SA
REF
D1 16
ISO150
QH
G
B
R/T
1B
D
1B
74LS595
V
CC2
R/C
U3
14 SER
High Byte Enable
Low Byte Enable
QA 15
QB
QC
QD
QE
QF
QG
QH
+5V
V
CC2
74LS595
QH
1
2
3
4
5
6
7
9
QH
7
9
D
2A
R/T G
A
2A
V
SB
R/T
2B
D
2B
100Ω
+5V
V
CC2
100Ω
100nF
1Ω
6.8µF
11 SRCLK
10 SRCLR
10µF
200Ω
1
R1
IN
R2
IN
AGND
1
CAP
3
2
4
+2.2µF
BUSY
U2
14 SER
QA 15
QB
QC
QD
QE
12 RCLK
13 G
QF
QG
1
2
3
4
5
6
33.2Ω
100Ω
V
IN
V
CC1
1MΩ
50kΩ
50kΩ
9
V
CC1
= V
CC2
= +5V
Isolated Supplies
ISO150
FIGURE 3. ISO150 and ADS7807 is Used to Reduce Circuit Noise in a Mixed Signal Application.
®
BURR-BROWN [ BURR-BROWN CORPORATION ]
