Datasheet

© 2009 Microchip Technology Inc. DS21685D-page 13
MCP6021/1R/2/3/4
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 2-37: V
REF
Accuracy vs. Supply
Voltage (MCP6021 and MCP6023 only).
FIGURE 2-38: Chip Select (CS
) Hysteresis
(MCP6023 only) with V
DD
= 2.5V.
FIGURE 2-39: Chip Select (CS
) to
Amplifier Output Response Time (MCP6023
only).
FIGURE 2-40: V
REF
Accuracy vs.
Temperature (MCP6021 and MCP6023 only).
FIGURE 2-41: Chip Select (CS
) Hysteresis
(MCP6023 only) with V
DD
= 5.5V.
FIGURE 2-42: Measured Input Current vs.
Input Voltage (below V
SS
).
-50
-40
-30
-20
-10
0
10
20
30
40
50
0.00.51.01.52.02.53.03.54.04.55.05.5
Power Supply Voltage (V)
V
REF
Accuracy; V
REF
– V
DD
/2
(mV)
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.0 0.5 1.0 1.5 2.0 2.5
Chip Select Voltage (V)
Quiescent Current
(mA/amplifier)
Op Amp
shuts off here
Op Amp
turns on here
Hysteresis
V
DD
= 2.5V
G = +1 V/V
V
IN
= 1.25V
CS swept
low to high
CS swept
high to low
-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
0.0E+00 5.0E-06 1.0E-05 1.5E-05 2.0E-05 2.5E-05 3.0E-05 3.5E-05
Time (5 µs/div)
Chip Select Voltage,
Output Voltage (V)
Output High-Z
V
DD
= 5.0V
G = +1 V/V
V
IN
= V
SS
Output
on
Output
on
V
OUT
CS Voltage
-50
-40
-30
-20
-10
0
10
20
30
40
50
-50-250 255075100125
Ambient Temperature (°C)
V
REF
Accuracy; V
REF
– V
DD
/2
(mV)
V
DD
= 5.5V
V
DD
= 2.5V
Representative Part
0.0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5
Chip Select Voltage (V)
Quiescent Current
(mA/amplifier)
Op Amp
shuts off here
Op Amp
turns on here
Hysteresis
CS swept
high to low
CS swept
low to high
V
DD
= 5.5V
G = +1 V/V
V
IN
= 2.75V
1.E-12
1.E-11
1.E-10
1.E-09
1.E-08
1.E-07
1.E-06
1.E-05
1.E-04
1.E-03
1.E-02
-1.0 -0.9 -0.8 -0.7 -0.6 -0.5 -0.4 -0.3 -0.2 -0.1 0.0
Input Voltage (V)
Input Current Magnitude (A)
+125°C
+85°C
+25°C
-40°C
10m
1m
100µ
10µ
1µ
100n
10n
1n
100p
10p
1p