X9C104 INTERSIL [Intersil Corporation], X9C104 Datasheet - Page 8

• Manufacturer Part Number: X9C104
• Description: Digitally Controlled Potentiometer
• Manufacturer: INTERSIL [Intersil Corporation]

Basic Configurations of Electronic Potentiometers
Basic Circuits
V
+V
IN
V
O
(REG) = 1.25V (1+R
BUFFERED REFERENCE VOLTAGE
VOLTAGE REGULATOR
R
V
REF
1
I
adj
317
THREE TERMINAL POTENTIOMETER;
VARIABLE VOLTAGE DIVIDER
R
V
2
W
2
/R
1
)+I
V
OUT
V
V
adj
R
H
L
8
/R
+
–
/R
1
R
= V
L
+5V
-5V
H
2
V
W
OP-07
R
/R
W
V
O
X9C102, X9C103, X9C104, X9C503
(REG)
V
OUT
V
W
/R
+12V
OFFSET VOLTAGE ADJUSTMENT
W
V
S
10kΩ
CASCADING TECHNIQUES
10kΩ
+V
+V
100kΩ
(a)
-12V
R
1
10kΩ
V
W
/R
W
–
+
+V
TL072
R
2
(b)
TWO TERMINAL VARIABLE RESISTOR;
VARIABLE CURRENT
X
V
W
/R
W
V
O
(FOR ADDITIONAL CIRCUITS SEE AN1145)
V
V
R
COMPARATOR WITH HYSTERESIS
S
V
S
V
V
UL
LL
I
NONINVERTING AMPLIFIER
LT311A
= {R
= {R
R
1
1
1
/(R
/(R
R
1
+
–
1
V
1
R
+ R
+5V
O
+ R
-5V
2
–
+
= (1+R
2
2
)} V
)} V
LM308A
O
O
2
R
(MIN)
(MAX)
/R
2
1
)V
S
V
July 20, 2009
O
V
FN8222.3
O