DG411, DG412, DG413
Application Information
Single Supply Operation
The DG411, DG412, DG413 can be operated with unipolar
supplies from 5V to 44V. These devices are characterized
and tested for single supply operation at 12V to facilitate the
majority of applications. To function properly, 12V is tied to
Pins 13 and 0V is tied to Pin 4.
Pin 12 still requires 5V for TTL compatible switching.
Summing Amplifier
When driving a high impedance, high capacitance load such
as shown in Figure 7, where the inputs to the summing
amplifier have some noise filtering, it is necessary to have
shunt switches for rapid discharge of the filter capacitor, thus
preventing offsets from occurring at the output.
R
1
V
IN1
R
2
C
1
R
5
R
3
V
IN2
R
4
-
V
OUT
+
R
6
C
2
DG413
FIGURE 7. SUMMING AMPLIFIER
8
FN3282.13
June 20, 2007
INTERSIL [ INTERSIL CORPORATION ]
