Datasheet

© 2009 Microchip Technology Inc. DS22152B-page 17
MCP40D17/18/19
Note: Unless otherwise indicated, T
A
= +25°C, V
DD
= 5V, V
SS
= 0V.
FIGURE 2-21: 10 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 2-22: 10 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 2-23: 10 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 2-24: 10 k Ω Rheo Mode : R
W
( Ω ),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 5.5V).(I
W
= 450 µ A, B = V
SS
).
FIGURE 2-25: 10 k Ω Rheo Mode : R
W
( Ω ),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 2.7V).(I
W
= 210 µ A, B = V
SS
).
FIGURE 2-26: 10 k Ω Rheo Mode : R
W
( Ω ),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Temperature (V
DD
= 1.8V). (I
W
=260 µ A, 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
1000
2000
3000
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
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)
-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
1000
2000
3000
0326496
Wiper Setting (decimal)
Wiper Resistance (R
W
)
(ohms)
-1
4
9
14
19
24
29
34
39
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
DNLRW