Datasheet

MCP40D17/18/19
DS22152B-page 14 © 2009 Microchip Technology Inc.
Note: Unless otherwise indicated, T
A
= +25°C, V
DD
= 5V, V
SS
= 0V.
FIGURE 2-3: 5.0 k Ω : Pot Mode – R
W
( Ω ),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 5.5V). (A = V
DD
, B = V
SS
).
FIGURE 2-4: 5.0 k
Ω : Pot Mode – R
W
( Ω ),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 2.7V). (A = V
DD
, B = V
SS
)
FIGURE 2-5: 5.0 k
Ω : Pot Mode – R
W
( Ω ),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 1.8V). (A = V
DD
, B = V
SS
)
FIGURE 2-6: 5.0 k Ω : Rheo Mode – R
W
(
Ω ), INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 5.5V).(I
W
= 1.4 mA, B = V
SS
)
FIGURE 2-7: 5.0 k Ω : Rheo Mode – R
W
(
Ω ), INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 2.7V).(I
W
= 450 µA, B = V
SS
)
FIGURE 2-8: 5.0 k Ω : Rheo Mode – R
W
(
Ω ), INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 1.8V). (I
W
=260 µA, B = V
SS
)
20
40
60
80
100
120
0 326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
Error (LSb)
-40C Rw 25C Rw 85C Rw 125C Rw
-40C INL 25C INL 85C INL 125C INL
-40C DNL 25C DNL 85C DNL 125C DNL
INL
DNL
R
W
-40°C
25°C
85°C
125°C
20
60
100
140
180
220
260
300
0326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
Error (LSb)
-40C Rw 25C Rw 85C Rw 125C Rw
-40C INL 25C INL 85C INL 125C INL
-40C DNL 25C DNL 85C DNL 125C DNL
INL
DNL-40°C
25°C
85°
R
W
125°C
Note: Refer to AN1080 for additional informa-
tion on the characteristics of the wiper
resistance (R
W
) with respect to device
voltage and wiper setting value.
0
500
1000
1500
2000
2500
0 326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-0.35
-0.25
-0.15
-0.05
0.05
0.15
0.25
0.35
Error (LSb)
-40C Rw 25C Rw 85C Rw 125C Rw
-40C INL 25C INL 85C INL 125C INL
-40C DNL 25C DNL 85C DNL 125C DNL
INL DNL
RW
20
40
60
80
100
120
0 326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-0.3
-0.2
-0.1
0
0.1
0.2
0.3
Error (LSb)
-40C Rw 25C Rw 85C Rw 125C Rw
-40C INL 25C INL 85C INL 125C INL
-40C DNL 25C DNL 85C DNL 125C DNL
INL
DNLR
W
-40°C
25°C
85°C 125°C
20
60
100
140
180
220
260
300
0326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-1
0
1
2
3
Error (LSb)
-40C Rw 25C Rw 85C Rw 125C Rw
-40C INL 25C INL 85C INL 125C INL
-40C DNL 25C DNL 85C DNL 125C DNL
INL
DNL
R
W
-40°C
25°C
85°C
125°C
Note: Refer to AN1080 for additional informa-
tion on the characteristics of the wiper
resistance (R
W
) with respect to device
voltage and wiper setting value.
0
500
1000
1500
2000
2500
0326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-1
4
9
14
19
24
29
34
39
44
Error (LSb)
-40C Rw 25C Rw 85C Rw 125C Rw
-40C INL 25C INL 85C INL 125C INL
-40C DNL 25C DNL 85C DNL 125C DNL
INL
DNL
RW