2009-2011 Microchip Technology Inc.
DS22146C-page 19
MCP651/1S/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 =1 kto VL, CL = 20 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
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
Cu
rr
en
t(
A)
CAL/CS = VDD
-1
0
1
2
3
4
5
6
7
8
9
012345
678
9
10
Time (ms)
CAL
/CS
,V
OUT
(V
)
-12
-10
-8
-6
-4
-2
0
2
4
6
8
Po
w
er
Su
p
ly
C
u
rre
n
t;
I DD
(m
A
)
VDD = 2.5V
G = 1
VL = 0V
Op Amp
turns on
CAL/CS
Op Amp
turns off
Calibration
starts
IDD
VOUT
-1
0
1
2
3
4
5
6
7
8
9
10
11
0123
4567
89
10
Time (ms)
CAL
/CS
,V
OUT
(V
)
-14
-12
-10
-8
-6
-4
-2
0
2
4
6
8
10
Po
w
er
Su
p
ly
C
u
rre
n
t;
I DD
(m
A
)
VDD = 5.5V
G = 1
VL = 0V
CAL/CS
Op Amp
turns off
Calibration
starts
IDD
VOUT
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)
C
A
L
/C
S
H
yst
er
esis
(V
)
VDD = 2.5V
VDD = 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)
C
A
L
/C
S
T
u
rn
O
n
T
im
e
(
m
s
)
0
1
2
3
4
5
6
7
8
-50
-25
0
25
50
75
100
125
Ambient Temperature (°C)
CAL
/C
S
P
u
ll-
d
o
w
n
Resist
o
r
(M
)
Representative Part