AD5203_15 Datasheet, PDF (5/12 Pages) Analog Devices – 4-Channel, 64-Position Digital Potentiometer

10
9
V_DD = +3V, OR +5V
R_AB = 10k⍀
8
7
6
5
4
3
R_WB
R_WA
2
1
0
0 8 16 24 32 40 48 56 64
CODE – Decimal
Figure 2. Wiper to End Terminal
␣ ␣ Resistance vs. Code
Typical Performance Characteristics– AD5203
5
4.5
4
3.5
3
2.5
2
1.5
1
0.5
0
0
3F_H
20_H
10_H
08_H
05_H
02_H
R_AB = 10k⍀
V_DD = +5V
T_A = +25؇C
1234567
I_WA CURRENT – mA
Figure 3. Resistance Linearity vs.
␣ ␣ Conduction Current
0.25
0.2
0.15
0.1
0.05
0
–0.05
–0.1
–0.15
–0.2
–0.25
0
V_DD = +3.0V
T_A = +85؇C
T_A = –55؇C _{TA = +25؇C}
8 16 24 32 40 48 56 64
DIGITAL INPUT CODE – Decimal
Figure 4. Resistance Step Position
␣ ␣ Nonlinearity Error vs. Code
80
SS = 544 UNITS
V_DD = +4.5V
T_A = +25؇C
60
40
20
0
30 31 32 33 34 35 36 37 38 39
WIPER RESISTANCE – ⍀
Figure 5.␣ Wiper-Contact-Resistance
Histogram
12
AD5203-10K VERSION
10
R_AB (END-TO-END)
8
6
4
R_WB (WIPER-TO-END)
CODE = 20_H
2
0
–75 –50 –25 0 25 50 75 100 125
TEMPERATURE – ؇C
␣ ␣ Figure 6.␣ Nominal Resistance vs.
␣ ␣ Temperature
0.25
0.2
0.15
0.1
0.05
0
–0.05
–0.1
–0.15
–0.2
–0.25
0
V_DD = +3.0V
+25؇C
–55؇C
+85؇C
8 16 24 32 40 48 56 64
DIGITAL INPUT CODE – Decimal
␣ ␣ ␣ Figure 7. Potentiometer Divider
␣ ␣ Nonlinearity Error vs. Code
0.25
0.2
0.15
V_DD = +3.0V
T_A = +25؇C, +85؇C, –40؇C
0.1
0.05
0
–0.05
–0.1
–0.15
–0.2
–0.25
0
8 16 24 32 40 48 56 64
DIGITAL INPUT CODE – Decimal
Figure 8. Potentiometer Divider
Differential Nonlinearity Error vs.
Code
50
V_DD = +3.0V
T_A = –40؇C/+85؇C
40
V_A = +2.0V
V_B = 0V
30
20
10
0
0 8 16 24 32 40 48 56 64
CODE – Decimal
Figure 9.␣ ∆V_WB/∆T Potentiometer
Mode Tempco
120
V_DD = +3.0V
100
T_A = –40؇C/+85؇C
V_A = NO CONNECT
R_WB MEASURED
80
60
40
20
0
0 8 16 24 32 40 48 56 64
CODE – Decimal
Figure 10. ∆R_WB/∆T Rheostat Mode
Tempco
REV. 0
–5–