x9317wv8ic7898 Intersil Corporation, x9317wv8ic7898 Datasheet - Page 11
x9317wv8ic7898
Manufacturer Part Number
x9317wv8ic7898
Description
Digitally Controlled Potentiometer Xdcp?
Manufacturer
Intersil Corporation
Datasheet
1.X9317WV8IC7898.pdf
(15 pages)
Applications Information
Electronic digitally controlled (XDCP) potentiometers provide
three powerful application advantages; (1) the variability and
reliability of a solid-state potentiometer, (2) the flexibility of
Basic Configurations of Electronic Potentiometers
Basic Circuits
V
+V
IN
V
O
Buffered Reference Voltage
(REG) = 1.25V (1+R
R
V
Voltage Regulator
REF
1
I
adj
317
Three terminal potentiometer;
variable voltage divider
R
R
2
W
2
V
/R
11
V
OUT
REF
R
1
+
-
1
)+I
+5V
= V
adj
W
LMC7101
R
R
/R
R
H
2
L
W
V
O
V
(REG)
OUT
R
W
+5V
V
Offset Voltage Adjustment
Cascading Techniques
S
10kΩ
+V
+V
10kΩ
(a)
100kΩ
X9317
R
1
R
10kΩ
W
computer-based digital controls, and (3) the retentivity of
nonvolatile memory used for the storage of multiple
potentiometer settings or data.
LMC7101
-
+
+V
+5V
R
(b)
2
X
Two terminal variable resistor;
variable current
R
W
V
O
V
V
V
V
Single Supply Inverting Amplifier
S
+5V
V
UL
LL
Comparator with Hysteresis
REF
S
= {R
= {R
100K
I
(for additional circuits see AN115)
LT311A
R
1
1
1
R
/(R
/(R
1
1
1
+R
R
+R
2
R
2
2
100K
2
-
+
)} V
)} V
V
O
O
O
-
+
= (R2/R1)V
(min)
(max)
+5V
LMC7101
September 9, 2005
S
FN8183.1
V
V
O
O