Datasheet

MCP621/1S/2/3/4/5/9
DS22188C-page 10 © 2009-2011 Microchip Technology Inc.
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
.
FIGURE 2-7: High Input Common Mode
Voltage Headroom vs. Ambient Temperature.
FIGURE 2-8: Input Offset Voltage vs.
Common Mode Voltage with V
DD
=2.5V.
FIGURE 2-9: Input Offset Voltage vs.
Common Mode Voltage with V
DD
=5.5V.
FIGURE 2-10: CMRR and PSRR vs.
Ambient Temperature.
FIGURE 2-11: DC Open-Loop Gain vs.
Ambient Temperature.
FIGURE 2-12: Input Bias and Offset
Currents vs. Ambient Temperature with
V
DD
=+5.5V.
1.0
1.1
1.2
1.3
1.4
-50-250 255075100125
Ambient Temperature (°C)
High Input Common
Mode Headroom (V)
V
DD
= 2.5V
V
DD
= 5.5V
1 Lot
High (V
DD
– V
CMR_H
)
-1000
-800
-600
-400
-200
0
200
400
600
800
1000
-0.6 -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
Input Common Mode Voltage (V)
Input Offset Voltage (µV)
V
DD
= 2.5V
Representative Part
+125°C
+85°C
+25°C
-40°C
-1000
-800
-600
-400
-200
0
200
400
600
800
1000
-0.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Input Common Mode Voltage (V)
Input Offset Voltage (µV)
V
DD
= 5.5V
Representative Part
+125°C
+85°C
+25°C
-40°C
60
65
70
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
CMRR, V
DD
= 2.5V
100
105
110
115
120
125
130
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
DC Open-Loop Gain (dB)
V
DD
= 5.5V
V
DD
= 2.5V
1
10
100
1,000
10,000
25 45 65 85 105 125
Ambient Temperature (°C)
Input Bias, Offset Currents
(pA)
V
DD
= 5.5V
V
CM
= V
CMR_H
| I
OS
|
I
B