Datasheet

MCP6021/1R/2/3/4
DS21685D-page 10 © 2009 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
/2, V
OUT
≈ V
DD
/2,
R
L
=10kΩ to V
DD
/2 and C
L
= 60 pF.
FIGURE 2-19: DC Open-Loop Gain vs.
Load Resistance.
FIGURE 2-20: Small Signal DC Open-Loop
Gain vs. Output Voltage Headroom.
FIGURE 2-21: Gain Bandwidth Product,
Phase Margin vs. Temperature.
FIGURE 2-22: DC Open-Loop Gain vs.
Temperature.
FIGURE 2-23: Gain Bandwidth Product,
Phase Margin vs. Common Mode Input Voltage.
FIGURE 2-24: Gain Bandwidth Product,
Phase Margin vs. Output Voltage.
80
90
100
110
120
130
1.E+02 1.E+03 1.E+04 1.E +05
Load Resistance (
Ω
)
DC Open-Loop Gain (dB)
V
DD
= 5.5V
V
DD
= 2.5V
100 1k 10k 100k
70
80
90
100
110
120
0.00 0.05 0.10 0.15 0.20 0.25 0.30
Output Voltage Headroom (V);
V
DD
- V
OH
or V
OL
- V
SS
DC Open-Loop Gain (dB)
V
CM
= V
DD
/2
V
DD
= 2.5V
V
DD
= 5.5V
0
1
2
3
4
5
6
7
8
9
10
-50-250 255075100125
Ambient Temperature (°C)
Gain Bandwidth Product
(MHz)
0
10
20
30
40
50
60
70
80
90
100
Phase Margin, G = +1 (°)
GBWP, V
DD
= 5.5V
GBWP, V
DD
= 2.5V
PM, V
DD
= 2.5V
PM, V
DD
= 5.5V
90
95
100
105
110
115
120
-50-250 255075100125
Ambient Temperature (°C)
DC Open-Loop Gain (dB)
V
DD
= 5.5V
V
DD
= 2.5V
0
2
4
6
8
10
12
14
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0
Common Mode Input Voltage (V)
Gain Bandwidth Product
(MHz)
0
15
30
45
60
75
90
105
Phase Margin, G = +1 (°)
Gain Bandwidth Product
Phase Margin, G = +1
V
DD
= 5.0V
0
2
4
6
8
10
12
14
0.00.51.01.52.02.53.03.54.04.55.0
Output Voltage (V)
Gain Bandwidth Product
(MHz)
0
15
30
45
60
75
90
105
Phase Margin, G = +1 (°)
Gain Bandwidth Product
Phase Margin, G = +1
V
DD
= 5.0V
V
CM
= V
DD
/2