MCP414X Datasheet, PDF (18/88 Pages) Microchip Technology – 7/8-Bit Single/Dual SPI Digital POT with Non-Volatile Memory

MCP414X/416X/424X/426X
Note: Unless otherwise indicated, T_A = +25°C, V_DD = 5V, V_SS = 0V.
120
100
80
60
-40C Rw
-40C INL
-40C DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
125C Rw
125C INL
125C DNL
0.3
0.2
DNL
INL
0.1
0
-0.1
40
25°C ^-40°C
125°C _85°C
R_W
-0.2
20
-0.3
0 25 50 75 100 125 150 175 200 225 250
Wiper Setting (decimal)
FIGURE 2-17:
10 kΩ Pot Mode – R_W (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (V_DD = 5.5V).
120
100
80
60
-40C Rw
-40C INL
-40C DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
125C Rw
125C INL
125C DNL
INL
1
0.5
0
40
85°C 25°C ^-40°C
125°C
DNL
R_W
-0.5
20
0
-1
32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-20:
10 kΩ Rheo Mode – R_W (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (V_DD = 5.5V).
300
260
-40C Rw
-40C INL
-40C DNL
25C Rw
25C INL
25C DNL
85C Rw
85C INL
85C DNL
125C Rw
125C INL
125C DNL
0.3
0.2
220
DNL
INL
0.1
180
0
140
-0.1
100
R_W
60
-40°C
-0.2
125°C ^{85°C 25°C}
20
-0.3
0 32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-18:
10 kΩ Pot Mode – R_W (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (V_DD = 3.0V).
300
260
220
-40C Rw
25C Rw
85C Rw
125C Rw
4
-40C INL
25C INL
85C INL
125C INL
-40C DNL 25C DNL
85C DNL
125C DNL
3
INL
2
180
1
140
100
0
60
-40°C
DNL R_W
-1
125°C ^{85°C 25°C}
20
-2
0 25 50 75 100 125 150 175 200 225 250
Wiper Setting (decimal)
FIGURE 2-21:
10 kΩ Rheo Mode – R_W (Ω),
INL (LSb), DNL (LSb) vs. Wiper Setting and
Ambient Temperature (V_DD = 3.0V).
10250
10200
10150
10100
10050
2.7V
5.5V
10000
-40
0
40
80
120
Ambient Temperature (°C)
FIGURE 2-19:
10 kΩ – Nominal Resistance
(Ω) vs. Ambient Temperature and V_DD.
12000
10000
8000
6000
4000
2000
0
0
-40°C
25°C
85°C
125°C
32 64 96 128 160 192 224 256
Wiper Setting (decimal)
FIGURE 2-22:
10 kΩ – R_WB (Ω) vs. Wiper
Setting and Ambient Temperature.
DS22059B-page 18
© 2008 Microchip Technology Inc.