參數(shù)資料
型號: X9313UMI
元件分類: 數(shù)字電位計
英文描述: 50K DIGITAL POTENTIOMETER, INCREMENT/DECREMENT CONTROL INTERFACE, 32 POSITIONS, PDSO8
封裝: MSOP-8
文件頁數(shù): 8/10頁
文件大?。?/td> 88K
代理商: X9313UMI
X9313
Characteristics subject to change without notice.
7 of 10
REV 1.5 10/7/03
www.xicor.com
APPLICATIONS INFORMATION
Electronic digitally controlled (XDCP) potentiometers provide three powerful application advantages; (1) the
variability and reliability of a solid-state potentiometer, (2) the exibility 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
VR
VW/RW
VR
I
Three terminal potentiometer;
variable voltage divider
Two terminal variable resistor;
variable current
VH
VL
Cascading Techniques
Buffered Reference Voltage
+
+5V
R1
+V
–5V
VW
VREF
VOUT
OP-07
VW
VW/RW
+V
X
(a)
(b)
VOUT = VW/RW
Noninverting Amplifier
+
VS
VO
R2
R1
VO = (1+R2/R1)VS
LM308A
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
}
LT311A
+5V
–5V
(for additional circuits see AN115)
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