Rainbow Electronics DS1805 - Manual (Page 5)

Typical Operating Characteristics
(V
CC
= 5.0V, T
A
= +25 °C, unless otherwise noted.)
DS1805
Addressable Digital Potentiometer
_____________________________________________________________________ 5
VOLTAGE-DIVIDER RELATIVE LINEARITY
vs. WIPER SETTING (10k Ω)
DS1805 toc07
WIPER SETTING
RELATIVE LINEARITY (LSB)
200 150 100 50
0
0.01
0.02
0.03
0.04
0.05
0.06
-0.01
0 250
VOLTAGE-DIVIDER ABSOLUTE LINEARITY
vs. WIPER SETTING (10k Ω)
DS1805 toc06
WIPER SETTING
ABSOLUTE LINEARITY (LSB)
200 150 50 100
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0
0.02
0 250
END-TO-END RESISTANCE TEMPERATURE
CHANGE vs. TEMPERATURE
DS1805 toc05
TEMPERATURE ( °C)
END-TO-END RESISTANCE % CHANGE
60 40 -20 0 20
-4
-3
-2
-1
0
1
2
3
4
5
-5
-40 80
TC = 530ppm/ °C
10k Ω, WORST CASE
VOLTAGE DIVIDER PERCENT CHANGE
(FROM +25 °C) vs. TEMPERATURE
(RATIOMETRIC TC)
DS1805 toc04
TEMPERATURE ( °C)
% CHANGE (FROM +25
°C)
60 40 20 0 -20
-0.04
-0.02
0
0.02
0.04
0.06
-0.06
-40 80
10k Ω POT
WIPER = BFh
WIPER = BFh
WIPER = 3Fh
WIPER = 3Fh
WIPER = 7Fh
TC = 1.3ppm/ °C
TC = 8.1ppm/ °C
WIPER RESISTANCE vs.
WIPER VOLTAGE (10k Ω)
DS1805 toc03
WIPER VOLTAGE (V)
WIPER RESISTANCE (k
Ω
)
4 3 2 1
50
100
150
200
250
300
350
0
0 5
V CC = 3V
V
CC
= 5V
W-L RESISTANCE
vs. WIPER SETTING
DS1805 toc02
WIPER SETTING
W-L RESISTANCE (k
Ω
)
225 200 175 150 125 100 75 50 25
2
4
6
8
10
0
0 250
10k Ω POTENTIOMETER
SUPPLY CURRENT
vs. TEMPERATURE
DS1805 toc01
TEMPERATURE ( °C)
SUPPLY CURRENT (
µ
A)
60 40 20 0 -20
5
10
15
20
25
30
0
-40 80
V
CC
= 5V
V CC = 3V