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