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| X9116_14 Datasheet, PDF (7/9 Pages) Intersil Corporation – Digitally Controlled Potentiometer | |||
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X9116
Basic Configurations of Electronic Potentiometers
VR
VH
VW/RW
VL
THREE-TERMINAL POTENTIOMETER;
VARIABLE VOLTAGE DIVIDER
VR
I
TWO-TERMINAL VARIABLE RESISTOR;
VARIABLE CURRENT
Basic Circuits
BUFFERED REFERENCE VOLTAGE
R1
+V
+5V
VREF
VW
OP-07
+
VOUT
â
â5V
VOUT = VW/RW
CASCADING TECHNIQUES
+V
+V
X
VW/RW
+V
VW
(a)
(b)
NONINVERTING AMPLIFIER
+5V
VS
+
LM308A
VO
â
-5V
R2
R1
VO = (1+R2/R1)VS
VOLTAGE REGULATOR
VIN
317
VO (REG)
R1
Iadj
R2
VO (REG) = 1.25V (1+R2/R1)+Iadj R2
COMPARATOR WITH HYSTERESIS
VS LT311A â
VO
+
R1
R2
VUL = {R1/(R1+R2)} VO(max)
VLL = {R1/(R1+R2)} VO(min)
(FOR ADDITIONAL CIRCUITS, SEE AN115)
All Intersil U.S. products are manufactured, assembled and tested utilizing ISO9000 quality systems.
Intersil Corporationâs quality certifications can be viewed at www.intersil.com/design/quality
Intersil products are sold by description only. Intersil Corporation reserves the right to make changes in circuit design, software and/or specifications at any time without
notice. Accordingly, the reader is cautioned to verify that data sheets are current before placing orders. Information furnished by Intersil is believed to be accurate and
reliable. However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result
from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries.
For information regarding Intersil Corporation and its products, see www.intersil.com
7
FN8160.3
February 3, 2011
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