Datasheet

 2009-2011 Microchip Technology Inc. DS22146C-page 19
MCP651/1S/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
=1kto V
L
, C
L
= 20 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
1.1
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
9
012345678910
Time (ms)
CAL/CS, V
OUT
(V)
-12
-10
-8
-6
-4
-2
0
2
4
6
8
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
-1
0
1
2
3
4
5
6
7
8
9
10
11
012345678910
Time (ms)
CAL/CS, V
OUT
(V)
-14
-12
-10
-8
-6
-4
-2
0
2
4
6
8
10
Power Supply Current;
I
DD
(mA)
V
DD
= 5.5V
G = 1
V
L
= 0V
CAL/CS
Op Amp
turns off
Calibration
starts
I
DD
V
OUT
Op Amp
turns on
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
0.0
0.5
1.0
1.5
2.0
2.5
3.0
3.5
4.0
-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