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DG441B Datasheet, PDF (7/7 Pages) Vishay Siliconix – Improved Quad SPST CMOS Analog Switches | |||
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APPLICATIONS
+15 V
IN
+15 V
DG442B V+
GND Vâ
0 = Load Off
1 = Load On
New Product
150 W
+24 V
RL
I = 3A
VN0300L, M
10 kW
+15 V
VIN
+
â
IN
DG441B/442B
Vishay Siliconix
+15 V
1/4 DG442B
S
D
CH +
â
VOUT
â15 V
H = Sample
L = Hold
FIGURE 7. Power MOSFET Driver
FIGURE 8. Open Loop Sample-and-Hold
VIN
GAIN1
AV = 1
GAIN2
AV = 10
GAIN3
AV = 20
GAIN4
AV = 100
+
â
+15 V
V+
DG441 or DG442
Vâ
GND
â15 V
VOUT
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
VOUT =
VIN
R1 + R2 + R3 + R4
R4
= 100
FIGURE 9. Precision-Weighted Resistor Programmable-Gain Amplifier
Document Number: 72625
S-32553âRev. A, 15-Dec-03
www.vishay.com
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