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X9C102PIZ Datasheet(PDF) 8 Page - Renesas Technology Corp

Part # X9C102PIZ
Description  Digitally Controlled Potentiometer (XDCP??
PDF  10 Pages
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Manufacturer  RENESAS [Renesas Technology Corp]
Direct Link  http://www.renesas.com
Logo RENESAS - Renesas Technology Corp

X9C102PIZ Datasheet(HTML) 8 Page - Renesas Technology Corp

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X9C102, X9C103, X9C104, X9C503
FN8222 Rev 3.00
Page 8 of 10
July 20, 2009
Basic Configurations of Electronic Potentiometers
Basic Circuits
VR
VR
I
THREE TERMINAL POTENTIOMETER;
VARIABLE VOLTAGE DIVIDER
TWO TERMINAL VARIABLE RESISTOR;
VARIABLE CURRENT
VH/RH
VL/RL
VW/RW
CASCADING TECHNIQUES
BUFFERED REFERENCE VOLTAGE
–
+
+5V
R1
+V
-5V
VW
VREF
VOUT
OP-07
VW/RW
VW/RW
+V
+V
+V
X
(a)
(b)
VOUT = VW/RW
NONINVERTING AMPLIFIER
VO = (1+R2/R1)VS
VOLTAGE REGULATOR
R1
R2
Iadj
VO (REG) = 1.25V (1+R2/R1)+Iadj R2
VO (REG)
VIN
317
OFFSET VOLTAGE ADJUSTMENT
+
–
VS
VO
R2
R1
100k
10k
10k
10k
-12V
+12V
TL072
COMPARATOR WITH HYSTERESIS
VUL = {R1/(R1 + R2)} VO(MAX)
VLL = {R1/(R1 + R2)} VO(MIN)
+
–
VS
VO
R2
R1
LM308A
+5V
-5V
+
–
VS
VO
R2
R1
LT311A
(FOR ADDITIONAL CIRCUITS SEE AN1145)



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