Datasheet
© 2009-2011 Microchip Technology Inc. DS22188C-page 9
MCP621/1S/2/3/4/5/9
2.0 TYPICAL PERFORMANCE CURVES
Note: Unless otherwise indicated, T
A
=+25°C, V
DD
= +2.5V to 5.5V, V
SS
= GND, V
CM
=V
DD
/3, V
OUT
=V
DD
/2,
V
L
=V
DD
/2, R
L
=2kΩ to V
L
, C
L
= 50 pF, and CAL/CS =V
SS
.
2.1 DC Signal Inputs
FIGURE 2-1: Input Offset Voltage.
FIGURE 2-2: Input Offset Voltage Drift.
FIGURE 2-3: Input Offset Voltage
Repeatability (repeated calibration).
FIGURE 2-4: Input Offset Voltage vs.
Power Supply Voltage.
FIGURE 2-5: Input Offset Voltage vs.
Output Voltage.
FIGURE 2-6: Low Input Common Mode
Voltage Headroom vs. Ambient Temperature.
Note: The graphs and tables provided following this note are a statistical summary based on a limited number of
samples and are provided for informational purposes only. The performance characteristics listed herein
are not tested or guaranteed. In some graphs or tables, the data presented may be outside the specified
operating range (e.g., outside specified power supply range) and therefore outside the warranted range.
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
22%
-80-60-40-20 0 20406080
Input Offset Voltage (µV)
Percentage of Occurrences
80 Samples
T
A
= +25°C
V
DD
= 2.5V and 5.5V
Calibrated at +25°C
0%
2%
4%
6%
8%
10%
12%
14%
16%
18%
20%
22%
24%
-10-8-6-4-20246810
Input Offset Voltage Drift (µV/°C)
Percentage of Occurrences
80 Samples
V
DD
= 2.5V and 5.5V
T
A
= -40°C to +125°C
Calibrated at +25°C
0%
5%
10%
15%
20%
25%
30%
35%
40%
45%
50%
-60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60
Input Offset Voltage Calibration Repeatability
(µV)
Percentage of Occurrences
200 Samples
T
A
= +25°C
V
DD
= 2.5V and 5.5V
Calibration
Changed
(-1 step)
No Change
(includes noise)
Calibration
Changed
(+1 step)
-700
-600
-500
-400
-300
-200
-100
0
100
200
300
1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 6.0 6.5
Power Supply Voltage (V)
Input Offset Voltage (µV)
+125°C
+85°C
+25°C
-40°C
Representative Part
Calibrated at V
DD
= 6.5V
-50
-40
-30
-20
-10
0
10
20
30
40
50
0.00.51.01.52.02.53.03.54.04.55.05.5
Output Voltage (V)
Input Offset Voltage (µV)
V
DD
= 2.5V
V
DD
= 5.5V
Representative Part
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
Low Input Common
Mode Headroom (V)
V
DD
= 2.5V
1 Lot
Low (V
CMR_L
– V
SS
)
V
DD
= 5.5V