參數(shù)資料
型號: X9313UMZ-3T1
廠商: INTERSIL CORP
元件分類: 數(shù)字電位計
英文描述: Digitally Controlled Potentiometer
中文描述: 50K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 32 POSITIONS, PDSO8
封裝: ROHS COMPLIANT, PLASTIC, MO-187AA, MSOP-8
文件頁數(shù): 8/12頁
文件大小: 281K
代理商: X9313UMZ-3T1
8
FN8177.5
April 18, 2007
Applications Information
Electronic digitally controlled potentiometers (XDCP) 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
R
V
W
/R
W
V
R
I
THREE-TERMINAL POTENTIOMETER;
VARIABLE VOLTAGE DIVIDER
TWO-TERMINAL VARIABLE RESISTOR;
VARIABLE CURRENT
V
H
V
L
CASCADING TECHNIQUES
BUFFERED REFERENCE VOLTAGE
+
+5V
R
1
+V
-5V
VW
V
REF
V
OUT
OP-07
V
W
VW/RW
+V
+V
+V
X
(a)
(b)
V
OUT
= V
W
/R
W
NONINVERTING AMPLIFIER
+
V
S
V
O
R
2
R
1
V
O
= (1 + R
2/
R
1
)V
S
LM308A
VOLTAGE REGULATOR
R
1
R
2
I
adj
V
O
(REG) = 1.25V (1 + R
2/
R
1
) + I
ADJ
R
2
V
O
(REG)
V
IN
317
OFFSET VOLTAGE ADJUSTMENT
+
V
S
V
O
R
2
R
1
100k
Ω
10k
Ω
10k
Ω
10k
Ω
-12V
+12V
TL072
COMPARATOR WITH HYSTERESIS
V
UL
= [R
1/
(R
1
+ R
2
)] V
O
(max)
V
LL
= [R
1/
(R
1
+ R
2
)] V
O
(min)
+
V
S
V
O
R
2
R
1
}
}
LT311A
+5V
-5V
(FOR ADDITIONAL CIRCUITS SEE AN115)
X9313
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