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RC4200
PRODUCT SPECIFICATION
8
Divider Circuit with Offset Adjustment
General
10K
£
R
5
= R
13
= R
17
£
50K
R
7
+ R
8
R
1
| | R
a
| | R
az
| | R
ao
R
6
R
7
(V
S
/0.05)
R
9
= R
b
R
10
100 x R
4
R
11
= 20K
R
12
= 100K
R
14
+ R
15
R
0
| | R
c
R
16
R
15
(V
S
/0.10)
Example: Two-Quad Divider
V
0
= K(V
X
/V
Z
), K = k, V
REF
= +V
S
= +15V
-10
£
V
X
£
+10, therefore
D
V
X
= 20
0
£
V
Z
£
+10, therefore
D
V
Z
= 20
-10
£
V
0
£
+10, therefore
D
V
0
= 20
R
0
= 26.7K
R
b
= 60K
R
4
= 50K
R
c
= 37.5K
R
d
= 300K
R
a
= 187.5K
R
az
= 31.25
R
ao
= 133K
R
1
= 333K
R
5
, R
13
, R
17
= 10K
R
7
, R
15
= 1K
R
8
, R
11
= 20K
R
6
, R
9
, R
16
= 300K
R
10
= 4.7M
R
12
= 100K
Figure 7. Divider Circuit with Offset Adjustment
65-1878
RC4200
Multiplier
V
(Input)
OS
S
O
ao
AX
Ra
Rb
R1
R
R
-V
I
3
R
V
(Output)
3
6
4
5
8
7
1
2
Rc
Rd
I
2
I
1
I
4
REF
+V
V
(Input)
R4
S
-V
S
+V
S
+V
S
-V
R10
R12
R11
R13 Z
V (Offset)
R17 V
OS
V (Offset)
R16
R14
R15
0.1 F
0.1 F
m
0.1 F
m
R9
R7
R8
R6
R5
S
-V
S
+V
Y
R18
S
+V
S
-V
R19
R21 = Rb
R20
V (Offset)
R18-R21 can be used in place of R9 to help
cancel gain error due to resistor product
mis-match (See Appendix 1).
X
OS