X9C102 Просмотр технического описания (PDF) - Intersil
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X9C102 Datasheet PDF : 10 Pages
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X9C102, X9C103, X9C104, X9C503
Basic Configurations of Electronic Potentiometers
VR
VR
VH/RH
VW/RW
VL/RL
THREE TERMINAL POTENTIOMETER;
VARIABLE VOLTAGE DIVIDER
Basic Circuits
I
TWO TERMINAL VARIABLE RESISTOR;
VARIABLE CURRENT
R1
+V
VREF
+5V
VW
OP-07
+
VOUT
–
-5V
VOUT = VW/RW
+V
+V
VS
X
VW/RW
+V
VW/RW
(a)
(b)
+5V
+
LM308A
VO
–
-5V
R2
R1
VO = (1+R2/R1)VS
BUFFERED REFERENCE VOLTAGE
CASCADING TECHNIQUES
NONINVERTING AMPLIFIER
VIN
317
R1
Iadj
R2
VO (REG) = 1.25V (1+R2/R1)+Iadj R2
VO (REG)
R1
VS
100kΩ
10kΩ
R2
–
+
TL072
10kΩ
10kΩ
+12V
-12V
VOLTAGE REGULATOR
OFFSET VOLTAGE ADJUSTMENT
LT311A
VS
–
VO
+
VO
R1
R2
VUL = {R1/(R1 + R2)} VO(MAX)
VLL = {R1/(R1 + R2)} VO(MIN)
(FOR ADDITIONAL CIRCUITS SEE AN1145)
COMPARATOR WITH HYSTERESIS
8
FN8222.3
July 20, 2009
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