Datasheet

MCP6481/2/4
DS20002322C-page 8  2012-2013 Microchip Technology Inc.
Note: Unless otherwise indicated, T
A
=+25°C, V
DD
= +2.2V to +5.5V, V
SS
= GND, V
CM
=V
DD
/2, V
OUT
 V
DD
/2,
V
L
=V
DD
/2, R
L
=10kto V
L
and C
L
=20pF.
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 Currents
vs. Ambient Temperature.
FIGURE 2-12: Input Bias Current vs.
Common Mode Input Voltage.
100
1,000
N
oise Voltage Density
(nV/¥Hz)
10
1.E-1 1.E+0 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6
Input
N
Frequency (Hz)
0.1 1 10 100 1k 10k 100k 1M
10
15
20
25
30
Voltage Noise Density
(nV/¥Hz)
f
=
10 kHz
0
5
-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
Input
Common Mode Input Voltage (V)
f
10
kHz
V
DD
= 5.5 V
20
30
40
50
60
70
80
90
100
1.00E+01 1.00E+02 1.00E+03 1.00E+04 1.00E+05
1.00E+06
CMRR, PSRR (dB)
Frequency (Hz)
Representative Part
10 100 1k 10k 100k 1M
CMRR
PSRR+
PSRR-
80
85
90
95
100
105
MRR, PSRR (dB)
PSRR
CMRR @ V
DD
= 5.5V
@V
=22V
65
70
75
-50 -25 0 25 50 75 100 125
C
Temperature (°C)
@V
DD
=2
.
2V
1
10
100
1000
s and Offset Currents
(A)
Input Bias Current
V
DD
= 5.5 V
1n
100p
10p
1p
0.01
0.1
25 35 45 55 65 75 85 95
105
115
125
Input Bia
Ambient Temperature (°C)
Input Offset Current
0.1p
0.01p
50
100
150
200
250
u
t Bias Current (pA)
T
A
= +125°C
T
A
= +85°C
V
DD
= 5.5 V
-50
0
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Inp
u
Common Mode Input Voltage (V)
A
T
A
= +25°C