Datasheet

MCP6231/1R/1U/2/4
DS21881E-page 6 © 2009 Microchip Technology Inc.
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,
R
L
= 100 kΩ to V
DD
/2 and C
L
= 60 pF.
FIGURE 2-7: Input Noise Voltage Density
vs. Frequency.
FIGURE 2-8: Input Offset Voltage vs.
Common Mode Input Voltage at V
DD
= 1.8V.
FIGURE 2-9: Input Offset Voltage vs.
Common Mode Input Voltage at V
DD
= 5.5V.
FIGURE 2-10: Input Offset Voltage Drift.
FIGURE 2-11: Input Offset Voltage vs.
Output Voltage.
FIGURE 2-12: Output Short-Circuit Current
vs. Ambient Temperature.
10
100
1,000
1.E-01 1.E+0
0
1.E+0
1
1.E+0
2
1.E+0
3
1.E+0
4
1.E+0
5Frequency (Hz)
Input Noise Voltage Density
(nV/
√
Hz)
0.1 100 1k 10k 100k101
150
250
350
450
550
-0.4 -0.2
0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 1.8 2.0 2.2
Common Mode Input Voltage (V)
Input Offset Voltage (µV)
V
DD
= 1.8V
T
A
= -40°C
T
A
= +25°C
T
A
= +85°C
T
A
= +125°C
-200
-150
-100
-50
0
50
100
150
200
-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)
Input Offset Voltage (µV)
V
DD
= 5.5 V
T
A
= +125°C
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
-12 -10
-8 -6 -4 -2
0 2 4 6 8
10 12
Input Offset Voltage Drift (µV/°C)
Percentage of Occurrences
628 Samples
V
CM
= V
SS
T
A
= -40°C to +125°C
-300
-250
-200
-150
-100
-50
0
50
100
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Output Voltage (V)
Input Offset Voltage (µV)
V
DD
= 1.8V
V
CM
= V
SS
V
DD
= 5.5V
-30
-25
-20
-15
-10
-5
0
5
10
15
20
25
30
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Power Supply Voltage (V)
Output Short-Circuit Current
(mA)
T
A
= +125°C
T
A
= +85°C
T
A
= +25°C
T
A
= -40°C
+I
SC
-I
SC