DG441L/442L

Vishay Siliconix

Document Number: 71399

S-03294—Rev. D, 17-Mar-03

www.vishay.com

9

APPLICATIONS

FIGURE 7. Power MOSFET Driver

+12 V

+12 V

GND

V -

V+

0 = Load Off

1 = Load On

+24 V

I = 3A

VN0300L, M

DG442L

+12 V

10 k

W

150

W

FIGURE 8. Open Loop Sample-and-Hold

H = Sample

L = Hold

0 V

+12 V

SD

IN

1/4 DG442L

+

-

+

-

IN

+12 V

) V

V+

V -

GND

DG441L or DG442L

+

-

Gain error is determined only by the resistor

tolerance. Op amp offset and CMRR will limit ac-

curacy of circuit.

90 k

W

5 k

W

4 k

W

1 k

W

=

= 100

FIGURE 9. Precision-Weighted Resistor Programmable-Gain Amplifier