AD7376 View Datasheet(PDF) - Analog Devices
Part Name
Description
Manufacturer
AD7376 Datasheet PDF : 12 Pages
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AD7376โTypical Performance Characteristics
100
75
50
25
RWB
RWA
0
0
32
64
96
128
CODE โ Decimal
Figure 2. Wiper To End Terminal
Percent Resistance vs. Code
0.5
0.4
0.3
TA = โ55ุC
TA = +25ุC
0.2
0.1
TA = +85ุC
0
โ0.1
โ0.2
โ0.3
โ0.4
VDD = +15V
VSS = โ15V
VA = 2.5V
VB = 0V
RAB = 50kโ
โ0.5
0
16 32 48 64 80 96 112 128
CODE โ Decimal
Figure 3. Resistance Step Position
Nonlinearity Error vs. Code
0.25
0.20
0.15
0.10 TA = +25ุC
0.05
TA = โ55ุC
0
โ0.05
โ0.10
โ0.15
โ0.20
โ0.25
0
TA = +85ุC
VDD = +15V
VSS = โ15V
RAB = 50kโ
16 32 48 64 80 96 112 128
CODE โ Decimal
Figure 4. Relative Resistance Step
Change from Ideal vs. Code
50
49
VDD = +15V
VSS = โ15V
RAB = 50kโ NOMINAL
48
47
46
45
โ55 โ35 โ15 5 25 45 65 85 105 125
TEMPERATURE โ ุC
Figure 5. Nominal Resistance vs.
Temperature
14 01H
12
10H
20H
10
40H
8
TA = +25ุC
6
VDD = +15V
VSS = โ15V
4
RAB = 50kโ
CODE = 70H
2
7FH
0
0 0.25 0.5 0.75 1 1.25 1.5 1.75 2
IWA โ mA
Figure 6. Resistance Linearity vs.
Conduction Current
1.5
Iw = 100โฎA, TA = +25ุC
DATA = 40H
1.2
0.9
0.6
0.3
0
5
10
15
20
25
30
SUPPLY VOLTAGE (VDD - VSS) โ Volts
Figure 7. Resistance Nonlinearity
Error vs. Supply Voltage
1.0
VA = 2.5V
0.8
VB = 0V
CODE = 40H
RAB = 50kโ
0.6
0.4
0.2
0
5
10
15
20
25
30
SUPPLY VOLTAGE (VDD - VSS) โ Volts
Figure 8. Potentiometer Divider
Nonlinearity Error vs. Supply
Voltage
20
15
10
5
0
โ5
โ10
โ15
โ20
โ25
โ30
0
VDD = +15V
VSS = โ15V
VA = +2.5V
VB = 0V
โ55ุC < TA < +85ุC
RAB = 50kโ
16 32 48 64 80 96 112 128
CODE โ Decimal
Figure 9. โVWB/โT Potentiometer
Mode Tempco
1000
900
RAB = 50kโ
800
700
600
VDD = +5V
VSS = 0V
500
400
300
VDD = +5V
VSS = โ5V
200
100
0
โ55 โ35 โ15 5
VDD = +15V
VSS = โ15V
25 45 65 85 105 125
TEMPERATURE โ ุC
Figure 10. Wiper Contact
Resistance vs. Temperature
โ4โ
REV. 0
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