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X9315UMZ-2.7T1

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
10
FN8179.2
December 21, 2009
Typical Rtotal vs. Temperature
Typical Total Resistance Temperature Coefficient
Typical Wiper Resistance
10000
9800
9600
9400
9200
9000
8800
8600
8400
8200
8000
Rtotal
-55
-45
-35 -25 -15 -5 5
15 25
35 45
55 65 75
Temperature
85 95 105 115 125
C°
-55
-350
-300
-250
-200
-150
-100
-50
0
-45 -35 -25 -15 -5 5 15 25 35
Temperature
PPM
45 55 65 75 85 95 105 115 125 °C
0
0
100
200
300
400
Rw (Ω)
500
600
700
800
2 4 6 8 10 12 14 16
Tap
18 20 22 24 26 28 30 32 V
CC
= 2.7V
X9315
11
FN8179.2
December 21, 2009
Typical Absolute% Error per Tap Position
Typical Relative% Error per Tap Position
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
computer-based digital controls, and (3) the retentivity of
nonvolatile memory used for the storage of multiple
potentiometer settings or data.
40.0%
30.0%
20.0%
10.0%
0.0%
-10.0%
-20.0%
-30.0%
-40.0%
0 3 6 9 12 15
Tap
Absolute% Error
18 21 24 27 30
20.0%
15.0%
10.0%
5.0%
0.0%
-5.0%
-10.0%
-15.0%
-20.0%
03691215
Relative% Error
18 21 24 27 30
Tap
X9315
12
FN8179.2
December 21, 2009
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 TechniquesBuffered Reference Voltage
–
+
+5V
R
1
+V
-5V
V
W
V
REF
V
OUT
OP-07
R
W
/V
W
R
W
/V
W
+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
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)
X9315
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

X9315UMZ-2.7T1

Mfr. #:
Buy X9315UMZ-2.7T1
Manufacturer:
Renesas / Intersil
Description:
Digital Potentiometer ICs CMOS XDCP 50KOHM 32 TAPS 8LD
Lifecycle:
New from this manufacturer.
Delivery:
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Payment:
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