Datasheet

MCP6286
DS22196A-page 8 © 2009 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
/3, V
OUT
≈ V
DD
/2,
V
L
= V
DD
/2, R
L
= 10 kΩ to V
L
and C
L
= 60 pF.
FIGURE 2-7: Input Offset Voltage vs.
Power Supply Voltage with V
CM
= V
CMR_H
.
FIGURE 2-8: Input Noise Voltage Density
vs. Frequency.
FIGURE 2-9: Input Noise Voltage Density
vs. Common Mode Input Voltage.
FIGURE 2-10: CMRR, PSRR vs.
Frequency.
FIGURE 2-11: CMRR, PSRR vs. Ambient
Temperature.
FIGURE 2-12: Common Mode Input
Voltage Headroom vs. Ambient Temperature.
-600
-400
-200
0
200
400
600
1.52.02.53.03.54.04.55.05.56.0
Power Supply Voltage (V)
Input Offset Voltage (µV)
V
CM
= V
CMR-H
Representative Part
T
A
= +125°C
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
1
10
100
1,000
1.E-1 1.E+0 1.E+1 1.E+2 1.E+3 1.E+4 1.E+5 1.E+6
Frequency (Hz)
Input Noise Voltage Density
(nV/
√
Hz)
0.1 1 10 100 1k 10k 100k 1M
3.0
3.5
4.0
4.5
5.0
5.5
6.0
6.5
7.0
-0.3
0.0 0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5
Common Mode Input Voltage (V)
Input Voltage Noise Density
(nV/
√
Hz)
V
DD
= 5.5 V
V
DD
= 2.2 V
f = 10 kHz
20
30
40
50
60
70
80
90
100
110
120
1 10 100 1000 10000 100000 1E+06
Frequency (Hz)
CMRR, PSRR (dB)
Representative Part
CMRR
PSRR+
PSRR-
1 10 100 1k 10k 100k 1M
75
80
85
90
95
100
105
110
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
CMRR, PSRR (dB)
PSRR
CMRR @ V
DD
= 5.5V
@ V
DD
= 2.2V
-0.30
-0.15
0.00
0.15
0.30
0.45
0.60
0.75
0.90
1.05
1.20
-50-25 0 255075100125
Ambient Temperature (°C)
Common Mode Input Voltage
Headroom (V)
V
CMR_L
- V
SS
@ V
DD
= 2.2
V
V
OL
- V
SS
@ V
DD
= 5.5
V
V
V
V
DD
- V
CMR_H
@ V
DD
= 5.5V
@ V
DD
= 2.2V