Datasheet

MCP6441/2/4
DS22257C-page 6 © 2010-2012 Microchip Technology Inc.
Note: Unless otherwise indicated, T
A
= +25°C, V
DD
= +1.4V to +6.0V, 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
and C
L
= 60 pF.
FIGURE 2-7: Input Noise Voltage Density
vs. Frequency.
FIGURE 2-8: Input Noise Voltage Density
vs. Common Mode Input Voltage.
FIGURE 2-9: CMRR, PSRR vs.
Frequency.
FIGURE 2-10: CMRR, PSRR vs. Ambient
Temperature.
FIGURE 2-11: Input Bias, Offset Current
vs. Ambient Temperature.
FIGURE 2-12: Input Bias Current vs.
Common Mode Input Voltage.
100
1,000
0.1 1 10 100 1000 10000
Frequency (Hz)
Input Noise Voltage Density
(nV/Hz)
0.1 1 10 100 1k 10k
0
50
100
150
200
250
300
350
-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 6.5
Common Mode Input Voltage (V)
Input Noise Voltage Density
(nV/Hz)
f = 1 kHz
V
DD
= 6.0 V
20
30
40
50
60
70
80
90
100
0.1 1 10 100 1000
Frequency (Hz)
CMRR, PSRR (dB)
CMRR
PSRR-
PSRR+
c
Representative Part
50
55
60
65
70
75
80
85
90
95
100
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
CMRR,PSRR (dB)
PSRR (V
DD
= 1.4V to 6.0V, V
CM
= V
SS
)
CMRR (V
DD
= 6.0V, V
CM
= -0.3V to 6.3V)
CMRR (V
DD
= 1.4V, V
CM
= -0.3V to 1.7V)
1
10
100
1000
25 45 65 85 105 125
Ambient Temperature (°C)
Input Bias and Offset Currents
(pA)
Input Bias Current
V
DD
= 6.0V
Input Offset Current
1
10
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 6.0
Common Mode Input Voltage (V)
Input Bias Current (pA)
V
DD
= 6.0V
T
A
= +125°C
T
A
= +85°C