Rainbow Electronics DS3903 - Manual (Page 5)

DS3903
Triple 128-Position Nonvolatile
Digital Potentiometer
_____________________________________________________________________ 5
END-TO-END RESISTANCE PERCENT CHANGE
FROM 25 °C vs. TEMPERATURE (90k Ω
)
DS3903 toc09
TEMPERATURE ( °C)
% CHANGE
80 70 50 60 -10 0 10 20 30 40 -30 -20
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-0.8
-1.0
-40
END-TO-END RESISTANCE PERCENT CHANGE
FROM 25 °C vs. TEMPERATURE (10k Ω
)
DS3903 toc08
TEMPERATURE ( °C)
% CHANGE
80 70 50 60 -10 0 10 20 30 40 -30 -20
-0.6
-0.4
-0.2
0
0.2
0.4
0.6
0.8
1.0
-0.8
-1.0
-40
VOLTAGE-DIVIDER PERCENT CHANGE
FROM 25 °C vs. TEMPERATURE (10k Ω
)
DS3903 toc07
TEMPERATURE ( °C)
% CHANGE (FROM 25
°C)
80 70 50 60 -10 0 10 20 30 40 -30 -20
-0.04
-0.03
-0.02
-0.01
0
0.01
0.02
0.03
0.04
-0.05
-0.06
-40
WIPER = 60h
WIPER = 20h
Tc = 1.9ppm/ °C
Tc = 0.7ppm/ °C
WIPER = 40h
Tc = 5.0ppm/ °C
VOLTAGE-DIVIDER PERCENT CHANGE
FROM 25 °C vs. TEMPERATURE (10k Ω
)
DS3903 toc06
TEMPERATURE ( °C)
% CHANGE (FROM 25
°C)
80 70 50 60 -10 0 10 20 30 40 -30 -20
-0.04
-0.02
0
0.02
0.04
0.06
0.08
0.10
0.12
-0.06
-40
WIPER = 60h
WIPER = 20h
Tc = 18.0ppm/ °C
Tc = 3.7ppm/ °C
WIPER = 40h
Tc = 1.5ppm/ °C
WIPER RESISTANCE
vs. WIPER VOLTAGE (90k
Ω
)
DS3903 toc05
WIPER VOLTAGE (V)
WIPER RESISTANCE (
Ω
)
3 4 5 2 1
50
100
150
200
250
300
350
0
0
V CC = 3V
POS 7Fh
WIPER RESISTANCE
vs. WIPER VOLTAGE (10k
Ω
)
DS3903 toc04
WIPER VOLTAGE (V)
WIPER RESISTANCE (
Ω
)
3 4 5 2 1
50
100
150
200
250
300
350
0
0
V CC = 3V
POS 7Fh
Typical Operating Characteristics (continued)
(V CC = 5.0V, 10k Ω plots apply to both pot0 and pot2, T
A = +25°C unless otherwise noted.)
VOLTAGE-DIVIDER ABSOLUTE LINEARITY
vs. WIPER SETTING (10k
Ω
)
DS3903 toc11
WIPER SETTING
ABSOLUTE LINEARTIY (LSB)
100 80 60 40 20
0.04
0.08
0.12
0.16
0.20
0
0 120
VOLTAGE-DIVIDER RELATIVE LINEARITY
vs. WIPER SETTING (10k
Ω
)
DS3903 toc10
WIPER SETTING
RELATIVE LINEARTIY (LSB)
100 80 60 40 20
0.01
0.02
0.03
0.04
0.05
0
0 120