Datasheet

MCP41XXX/42XXX
DS11195C-page 10  2003 Microchip Technology Inc.
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.
FIGURE 2-19: Gain vs. Frequency for
50kΩ Potentiometer.
FIGURE 2-20: Gain vs. Frequency for
100kΩ Potentiometer.
FIGURE 2-21: -3 dB Bandwidths.
FIGURE 2-22: Power Supply Rejection
Ratio vs. Frequency.
FIGURE 2-23: 10 kΩ Wiper Resistance vs.
Voltage.
FIGURE 2-24: 50 kΩ & 100 kΩ Wiper
Resistance vs. Voltage.
-60
-54
-48
-42
-36
-30
-24
-18
-12
-6
0
6
Frequency (Hz)
Gain (dB)
C
L
= 30pF, Refer to Figure 2-29
MCP41050, MCP42050 (50kΩ potentiometers)
Code = FFh
Code = 80h
Code = 40h
Code = 20h
Code = 10h
Code = 08h
Code = 04h
Code = 02h
Code = 01h
100 1k 10k 100k 1M 10M
-60
-54
-48
-42
-36
-30
-24
-18
-12
-6
0
6
Frequency (Hz)
Gain (dB)
C
L
= 30pF, Refer to Figure 2-29
MCP41100, MCP42100 (100k
Ω
potentiometers)
Code = FFh
Code = 80h
Code = 40h
Code = 20h
Code = 10h
Code = 08h
Code = 04h
Code = 02h
Code = 01h
100 1k
10k 100k 1M
-36
-30
-24
-18
-12
-6
0
Frequency (Hz)
Gain (dB)
279 kHz
145 kHz
1.06 MHz
10 kΩ
50 kΩ
100 kΩ
C
L
= 30 pF, Code = 80h
Refer to Figure 2-29
1k 10k 100k 1M 10
M
0
5
10
15
20
25
30
35
40
Frequency (Hz)
PSRR (dB)
100 kΩ Potentiometer
50 kΩ Potentiometer
10 kΩ Potentiometer
V
DD
= 4.5V to 5.5V,
Code = 80h,
C
L
= 27 pF,
V
A
= 4V
Refer to Figure 2-28
1k 10k 100k 1M 10
M
0
100
200
300
400
500
600
700
012345
Terminal B Voltage (V)
Wiper Resistance (
Ω
)
MCP41010, MCP42010
Iw = 1 mA, Code = 00h,
Refer to Figure 2-27
V
DD
= 2.7V
V
DD
= 5V
0
50
100
150
200
250
300
350
400
450
012345
Terminal B Voltage (V)
Wiper Resistance (
Ω
)
V
DD
= 2.7V
V
DD
= 5V
Code = 00h
Refer to Figure 2-27