MCP41XXX/42XXX
2.0
Note:
TYPICAL PERFORMANCE CURVES
The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
Note:
Unless otherwise indicated, curve represents 10 kΩ, 50 kΩ and 100 kΩ devices, V
DD
= 5V, V
SS
= 0V, T
A
= +25°C,
V
B
= 0V.
1
Normalized Resistance (
Ω
)
0.8
0.6
0.4
R
WB
R
WA
14
V
DD
= +3V to +5V
Nominal Resistance (k
Ω
)
12
10
8
6
4
2
0
R
AB
R
WB
Code = 80h
0.2
0
0
32
64
96
128 160
Code (Decimal)
192
224
256
MCP41010, MCP42010 (10 kΩ potentiometers)
-40 -25 -10
5
20 35 50 65 80 95 110 125
Temperature (°C)
FIGURE 2-1:
Normalized Wiper to End
Terminal Resistance vs. Code.
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
0
32
64
96
Potentiometer INL Error (LSB)
FIGURE 2-4:
vs. Temperature.
70
Nominal Resistance (k
Ω
)
60
50
40
30
20
10
Nominal Resistance 10 kΩ
T
A
= -40°C to +85°C
Refer to Figure 2-25
R
AB
R
WB
Code = 80h
MCP41050, MCP42050 (50 kΩ potentiometers)
128 160 192 224 256
0
-40 -25 -10
5
20
35
50
65
80
95 110 125
Code (Decimal)
Temperature (°C)
FIGURE 2-2:
Code.
Potentiometer Mode TempCo
(ppm / °C)
70
60
50
40
30
20
10
0
-10
0
32
64
Potentiometer INL Error vs.
FIGURE 2-5:
vs. Temperature.
140
Nominal Resistance (k
Ω
)
120
100
80
60
40
20
Nominal Resistance 50 kΩ
T
A
= -40°C to +85°C
V
A
= 3V
R
AB
R
WB
Code = 80h
96
128
160
192
224
256
0
-40 -25 -10
MCP41100, MCP42100 (100 kΩ potentiometers)
5
20
35
50
65
80
95 110 125
Code (Decimal)
Temperature (°C)
FIGURE 2-3:
Potentiometer Mode
Tempco vs. Code.
FIGURE 2-6:
vs. Temperature.
Nominal Resistance 100 kΩ
2003 Microchip Technology Inc.
DS11195C-page 7
MICROCHIP [ MICROCHIP TECHNOLOGY ]
