Datasheet

Typical Operating Characteristics
(V
CC
= 5.0V, T
A
= +25°C, unless otherwise noted.)
DS1805
Addressable Digital Potentiometer
_____________________________________________________________________ 5
VOLTAGE-DIVIDER ABSOLUTE LINEARITY
vs. WIPER SETTING (10kΩ)
DS1805 toc07
WIPER SETTING
ABSOLUTE LINEARITY (LSB)
20015050 100
0.04
0.06
0.08
0.10
0.12
0.14
0.16
0.18
0
0.02
0 250
VOLTAGE-DIVIDER RELATIVE LINEARITY
vs. WIPER SETTING (10kΩ)
DS1805 toc08
WIPER SETTING
RELATIVE LINEARITY (LSB)
20015010050
0
0.01
0.02
0.03
0.04
0.05
0.06
-0.01
0250
ACTIVE SUPPLY CURRENT
vs. SCL FREQUENCY
DS1805 toc06
SCL FREQUENCY (kHz)
ACTIVE SUPPLY CURRENT (µA)
300200100
5
10
15
20
25
30
35
40
45
50
0
0400
SDA = VCC
A0, A1, A2, L1 = GND
W1, H1 = NO CONNECT
END-TO-END RESISTANCE TEMPERATURE
CHANGE vs. TEMPERATURE
DS1805 toc05
TEMPERATURE (°C)
END-TO-END RESISTANCE % CHANGE
6040-20 0 20
-4
-3
-2
-1
0
1
2
3
4
5
-5
-40 80
TC = 530ppm/°C
10kΩ, WORST CASE
VOLTAGE DIVIDER PERCENT CHANGE
(FROM +25°C) vs. TEMPERATURE
(RATIOMETRIC TC)
DS1805 toc04
TEMPERATURE (°C)
% CHANGE (FROM +25°C)
6040200-20
-0.04
-0.02
0
0.02
0.04
0.06
-0.06
-40 80
10kΩ POT
WIPER = BFh
WIPER = BFh
WIPER = 3Fh
WIPER = 3Fh
WIPER = 7Fh
TC = 1.3ppm/°C
TC = 8.1ppm/°C
WIPER RESISTANCE vs.
WIPER VOLTAGE (10kΩ)
DS1805 toc03
WIPER VOLTAGE (V)
WIPER RESISTANCE (Ω)
4321
50
100
150
200
250
300
350
0
05
V
CC
= 3V
V
CC
= 5V
W-L RESISTANCE
vs. WIPER SETTING
DS1805 toc02
WIPER SETTING
W-L RESISTANCE (kΩ)
225200175150125100755025
2
4
6
8
10
0
0 250
10kΩ POTENTIOMETER
SUPPLY CURRENT
vs. TEMPERATURE
DS1805 toc01
TEMPERATURE (°C)
SUPPLY CURRENT (µA)
6040200-20
5
10
15
20
25
30
0
-40 80
V
CC
= 5V
V
CC
= 3V