2009-2011 Microchip Technology Inc.
DS22188C-page 19
MCP621/1S/2/3/4/5/9
Note: Unless otherwise indicated, TA =+25°C, VDD = +2.5V to 5.5V, VSS = GND, VCM =VDD/3, VOUT =VDD/2,
VL =VDD/2, RL =2 kΩ to VL, CL = 50 pF, and CAL/CS =VSS.
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 VDD =2.5V.
FIGURE 2-46:
CAL/CS Voltage, Output
Voltage and Supply Current (for Side A) vs. Time
with VDD =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 (RPD) 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)
C
A
L/
C
S
C
u
rre
nt
(
A
)
CAL/CS = VDD
-1
0
1
2
3
4
5
6
7
8
02468
10
12
14
16
Time (ms)
CA
L
/C
S
,V
OU
T(V
)
-12
-10
-8
-6
-4
-2
0
2
4
6
P
o
w
e
rS
uppl
yC
u
rrent
;
I DD
(mA
)
VDD = 2.5V
G = 1
VL = 0V
Op Amp
turns on
CAL/CS
Op Amp
turns off
Calibration
starts
IDD
VOUT
-2
0
2
4
6
8
10
12
14
16
0
2
4
6
8
10
12
14
16
Time (ms)
CA
L
/C
S
,V
OU
T(V
)
-12
-10
-8
-6
-4
-2
0
2
4
6
P
o
w
e
rS
uppl
yC
u
rrent
;
I DD
(mA
)
VDD = 5.5V
G = 1
VL = 0V
Op Amp
turns on
CAL/CS
Op Amp
turns off
Calibration
starts
IDD
VOUT
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)
CA
L/
C
S
H
yst
eresi
s
(V
)
VDD = 2.5V
VDD = 5.5V
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
125
Ambient Temperature (°C)
C
A
L/
C
S
Turn
On
Ti
m
e
(
m
s)
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
125
Ambient Temperature (°C)
C
A
L/
C
S
P
u
ll
-down
R
esi
st
or
(M
)
Representative Part