Datasheet

Data Sheet AD632
Rev. D | Page 9 of 12
OPERATION AS A DIVIDER
Figure 9 shows the connection required for division. Unlike
earlier products, the AD632 provides differential operation on
both the numerator and the denominator, allowing the ratio of
two floating variables to be generated. Further flexibility results
from access to a high impedance summing input to Y
1
. As with
all dividers based on the use of a multiplier in a feedback loop,
the bandwidth is proportional to the denominator magnitude,
as shown in Figure 6.
The accuracy of the AD632 B-model is sufficient to maintain a
1% error over a 10 V to 1 V denominator range.
Figure 9. Basic Divider Connection
X
1
+V
S
X
2
+V
S
OUT
V
OS
Z
1
–V
S
Z
2
Y
1
Y
2
–V
S
–15V
+15V
X INPUT
(DENOMINATOR)
+10V FS
+12V PK
Z INPUT
(NUMERATOR)
±10V FS, ±12V PK
OPTIONAL
SUMMING INPUT
±10V PK
+
–
+15V
–15V
2kΩ
TO
200kΩ
10 (Z
2
– Z
1
)
(X
1
– X
2
)
+ Y
1
=
OUTPUT, ±12V PK
09040-010