DG441L Datasheet, PDF (9/10 Pages) Vishay Siliconix – Precision Monolithic Quad SPST Low-Voltage CMOS Analog Switches

APPLICATIONS
+12 V
IN
+12 V
DG442L ^V+
GND V -
0 = Load Off
1 = Load On
150 W
+24 V
R_L
I = 3A
VN0300L, M
10 kW
+12 V
V_IN
+
-
IN
DG441L/442L
Vishay Siliconix
+12 V
1/4 DG442L
S
D
C_H ⁺
-
V_OUT
0V
H = Sample
L = Hold
FIGURE 7. Power MOSFET Driver
FIGURE 8. Open Loop Sample-and-Hold
V_IN
GAIN₁
A_V = 1
GAIN₂
A_V = 10
GAIN₃
A_V = 20
GAIN₄
A_V = 100
+
-
+12 V
V+
DG441L or DG442L
V-
GND
)V
V_OUT
Gain error is determined only by the resistor
tolerance. Op amp offset and CMRR will limit ac-
curacy of circuit.
R₁
90 kW
R₂
5 kW
R₃
4 kW
R₄
1 kW
With SW₄ Closed
V_{OUT =}
V_IN
R₁ + R₂ + R₃ + R₄
R₄
= 100
FIGURE 9. Precision-Weighted Resistor Programmable-Gain Amplifier
Document Number: 71399
S-03294—Rev. D, 17-Mar-03
www.vishay.com
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