X9C102 INTERSIL [Intersil Corporation], X9C102 Datasheet - Page 9

• Manufacturer Part Number: X9C102
• Description: Digitally Controlled Pot (XDCP)
• Manufacturer: INTERSIL [Intersil Corporation]

PERFORMANCE CHARACTERISTICS
Contact the factory for more information.
APPLICATIONS INFORMATION
Electronic digitally controlled (XCDP) potentiometers provide three powerful application advantages; (1) the variability
and reliability of a solid-state potentiometer, (2) the flexibility of computer-based digital controls, and (3) the retentivity
of nonvolatile memory used for the storage of multiple potentiometer settings or data.
Basic Configurations of Electronic Potentiometers
Basic Circuits
V
+V
IN
V
O
(REG) = 1.25V (1+R
Buffered Reference Voltage
R
V
Voltage Regulator
REF
1
I
adj
317
Three terminal potentiometer;
variable voltage divider
R
V
2
W
2
/R
V
V
V
OUT
1
R
H
L
)+I
9
+
–
/R
/R
1
+5V
-5V
adj
= V
L
H
V
R
OP-07
W
R
2
/R
V
W
O
X9C102, X9C103, X9C104, X9C503
V
(REG)
OUT
V
W
/R
+12V
W
V
Offset Voltage Adjustment
Cascading Techniques
+V
+V
10kΩ
S
10kΩ
(a)
100kΩ
-12V
R
1
V
10kΩ
W
/R
W
–
+
+V
TL072
R
(b)
2
X
Two terminal variable resistor;
variable current
V
W
/R
W
V
O
V
V
V
UL
LL
Comparator with Hysteresis
V
R
V
S
= {R
V
= {R
S
Noninverting Amplifier
(for additional circuits see AN115)
O
I
= (1+R
LT311A
1
1
/(R
/(R
R
1
1
1
+ R
R
+ R
2
/R
1
+
–
R
2
+5V
2
-5V
1
)} V
)} V
)V
–
+
2
S
O
O
LM308A
(min)
(max)
R
2
September 19, 2005
V
O
V
FN8222.1
O