Datasheet

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SBOS099C − SEPTEMBER 2000 − REVISED JANUARY 2005
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12
1/4
OPA4350
V
IN
B1
2
3
4
2k
Ω
2k
Ω
C
B1
CH B1+
CH B1
−
CH B0+
CH B0
−
CH A1+
CH A1
−
CH A0+
CH A0
−
REF
IN
REF
OUT
SERIAL DATA A
SERIAL DATA B
BUSY
CLOCK
CS
RD
CONVST
A0
M0
M1
2
3
4
5
6
7
8
9
10
11
23
22
21
20
19
18
17
16
15
14
1/4
OPA4350
V
IN
B0
+5V
6
5
2k
Ω
2k
Ω
C
B0
1/4
OPA4350
V
IN
A1
9
10
12
13
8
7
1
2k
Ω
2k
Ω
C
A1
1/4
OPA4350
V
IN
A0
14
11
112
2k
Ω
2k
Ω
C
A0
0.1
µ
F0.1
µ
F
+V
A
+V
D
24 13
Serial
Interface
DGND AGND
ADS7861
V
IN
= 0V to 2.45V for 0V to 4.9V output.
Choose C
B1
,C
B0
,C
A1
,C
A0
to filter high frequency noise.
Figure 5. OPA4350 Driving Sampling A/D Converter