Datasheet

© 2009-2011 Microchip Technology Inc. DS22188C-page 19
MCP621/1S/2/3/4/5/9
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
.
2.6 Calibration and Chip Select Response
FIGURE 2-44: CAL/CS Current vs. Power
Supply Voltage.
FIGURE 2-45: CAL/CS
Voltage, Output
Voltage and Supply Current (for Side A) vs. Time
with V
DD
=2.5V.
FIGURE 2-46: CAL/CS
Voltage, Output
Voltage and Supply Current (for Side A) vs. Time
with V
DD
=5.5V.
FIGURE 2-47: CAL/CS
Hysteresis vs.
Ambient Temperature.
FIGURE 2-48: CAL/CS
Turn-On Time vs.
Ambient Temperature.
FIGURE 2-49: CAL/CS
’s Pull-down
Resistor (R
PD
) vs. Ambient Temperature.
0.0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1.0
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)
CAL/CS Current (µA)
CAL/CS = V
DD
-1
0
1
2
3
4
5
6
7
8
0246810121416
Time (ms)
CAL/CS, V
OUT
(V)
-12
-10
-8
-6
-4
-2
0
2
4
6
Power Supply Current;
I
DD
(mA)
V
DD
= 2.5V
G = 1
V
L
= 0V
Op Amp
turns on
CAL/CS
Op Amp
turns off
Calibration
starts
I
DD
V
OUT
-2
0
2
4
6
8
10
12
14
16
0 2 4 6 8 10 12 14 16
Time (ms)
CAL/CS, V
OUT
(V)
-12
-10
-8
-6
-4
-2
0
2
4
6
Power Supply Current;
I
DD
(mA)
V
DD
= 5.5V
G = 1
V
L
= 0V
Op Amp
turns on
CAL/CS
Op Amp
turns off
Calibration
starts
I
DD
V
OUT
0.00
0.05
0.10
0.15
0.20
0.25
0.30
0.35
0.40
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
CAL/CS Hysteresis (V)
V
DD
= 2.5V
V
DD
= 5.5V
0
1
2
3
4
5
6
7
8
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
CAL/CS Turn On Time (ms)
0
1
2
3
4
5
6
7
8
-50 -25 0 25 50 75 100 125
Ambient Temperature (°C)
CAL/CS Pull-down Resistor
(MΩ)
Representative Part