rc4200 Fairchild Semiconductor, rc4200 Datasheet - Page 10

• Manufacturer Part Number: rc4200
• Description: Analog Multiplier
• Manufacturer: Fairchild Semiconductor

RC4200
Square Root Circuit Offset Adjust
10
10K R
R
R
R
R
R
R
R
7
6
8
9
10
11
12
=
=
=
=
=
=
=
≤
100Ω
R
R
R
R
Y
R14
R
100Ω
7
1
b
OS
5
11
0
||
+V
--------- -
0.05
=
||
-V
V
R
V
------ -
0.1
R
S
S
S
R14-R17 can be used in place of R9 to help
reduce linearity error due to resistor product
mis-match (See Appendix 1).
a
S
R
C
||
13
(Input)
R
V
R15
≤
ao
X
50K
R17 = R
R16
R1
X
OS
b
R5
+V
-V
S
S
Figure 9. Square Root Circuit Offset Adjust
R6
R7
R9
R
a
R8
0.1 F
0.1 F
µ
µ
R
R
b
ao
I
2
Procedure
1. Set both trimmer pots to 0V on the wiper.
2. Put in a full scale (0 to V
3.
I
8
7
1
1
2
-V
input. Adjust X
tude on V
Connect V
on V
Multiplier
RC4200
+V
S
3
REF
0
output.
0.1 F
6
0
µ
X
R
5
output. (Scaling adjust)
4
I
I
3
c
input to ground. Adjust V
4
OS
R10
R11
(R5) for proper peak-to-peak ampli-
R12
R
R
X
+V
d
O
(max.) squarewave on V
-V
S
R4
S
PRODUCT SPECIFICATION
+V
-V
S
S
R13 V
REV. 1.2.1 6/14/01
OS
65-1876
(Output)
(R13) for 0V
OS
V
O
X