MCP6031/2/3/4
Note:
Unless otherwise indicated, T
A
= +25°C, V
DD
= +1.8V to +5.5V, V
SS
= GND, V
CM
= V
DD
/2, V
OUT
≈
V
DD
/2,
V
L
= V
DD
/2, R
L
= 1 MΩ to V
L
, C
L
= 60 pF and CS is tied low.
1,000
100
0.1
1E-1
1
1E+0
10
1E+1
100
1E+2
1k
1E+3
10k
1E+4
100k
1E+5
110
105
100
95
90
85
80
75
70
65
60
-50
Input Noise Voltage Density
(nV/
√
Hz)
PSRR, CMRR (dB)
CMRR (V
DD
= 1.8V,
V
CM
= -0.3V to 2.1V)
CMRR (V
DD
= 5.5V,
V
CM
= -0.3V to 5.8V)
PSRR (V
DD
= 1.8V to 5.5V, V
CM
= V
SS
)
Frequency (Hz)
-25
0
25
50
75
Ambient Temperature (°C)
100
125
FIGURE 2-7:
vs. Frequency.
Input Noise Voltage Density
FIGURE 2-10:
Common Mode Rejection
Ratio, Power Supply Rejection Ratio vs. Ambient
Temperature.
Input Noise Voltage Density
(nV/
√
Hz)
200
175
150
125
100
75
50
25
0
-0.5
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
4.5
5.0
5.5
6.0
Common Mode Input Voltage (V)
f = 1 kHz
V
DD
= 5.5V
10000
Input Bias and Offset
Currents (pA)
V
DD
= 5.5V
V
CM
= V
DD
1000
100
10
1
25
Input Offset Current
Input Bias Current
45
65
85
105
Ambient Temperature (°C)
125
FIGURE 2-8:
Input Noise Voltage Density
vs. Common Mode Input Voltage.
100
90
80
70
60
50
40
30
20
10
0
FIGURE 2-11:
Input Bias, Offset Currents
vs. Ambient Temperature.
PSRR-
10000
PSRR+
CMRR
Input Bias Current (pA)
V
DD
= 5.5V
CMRR, PSRR (dB)
1000
T
A
= +125°C
100
T
A
= +85°C
V
DD
= 5.5V
10
0.1
1
10
Frequency (Hz)
100
1000
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Common Mode Input Voltage (V)
FIGURE 2-9:
Common Mode Rejection
Ratio, Power Supply Rejection Ratio vs.
Frequency.
FIGURE 2-12:
Input Bias Current vs.
Common Mode Input Voltage.
©
2008 Microchip Technology Inc.
DS22041B-page 7
MICROCHIP [ MICROCHIP TECHNOLOGY ]
