Datasheet

MSP430F23x0
MIXED SIGNAL MICROCONTROLLER
SLAS518A -- AUGUST 2006 -- REVISED MAY 2007
40
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended ranges of supply voltage and operating free-air
temperature (unless otherwise noted) (continued)
Comparator_A+ (see Note 1)
PARAMETER TEST CONDITIONS VCC MIN TYP MAX UNIT
I
C
A
O
N
1
C
A
R
S
E
L
0
C
A
R
E
F
0
2.2 V 25 40
μ
A
I
(DD)
C
A
ON=1, C
A
RSEL=0, C
A
REF=0
3V 45 60
μ
A
I
CAON=1, CARSEL=0,
C
A
R
E
F
1
/
2
/
3
2.2 V 30 50
μ
A
I
(Refladder/RefDiode)
C
A
REF=1
/
2
/
3,
no load at P1.0/CA0 and P1.1/CA1
3V 45 71
μ
A
V
(IC)
Common-mode input voltage CAON=1 2.2 V/3 V 0 V
CC
-- 1 V
V
(Ref025)
Voltage @ 0.25 V
CC
node
V
CC
PCA0=1, CARSEL=1, CAREF=1,
no load at P1.0/CA0 and P1.1/CA1
2.2 V/3 V 0.23 0.24 0.25
V
(Ref050)
Voltage @ 0.5V
CC
node
V
CC
PCA0=1, CARSEL=1, CAREF=2,
no load at P1.0/CA0 and P1.1/CA1
2.2 V/3 V 0.47 0.48 0.5
V
(
s
e
e
F
i
g
u
r
e
2
7
a
n
d
F
i
g
u
r
e
2
8
)
PCA0=1, CARSEL=1, CAREF=3,
n
o
l
o
a
d
a
t
P
1
0
/
C
A
0
a
n
d
P
1
1
/
C
A
1
2.2 V 390 480 540
m
V
V
(RefVT)
(see Figure 27 and Figure 28)
no load at P1.0
/
C
A
0 and P1.1
/
C
A
1,
T
A
=85°C
3V 400 490 550
m
V
V
(offset)
Offset voltage SeeNote2 2.2 V/3 V -- 3 0 30 mV
V
hys
Input hysteresis CAON=1 2.2 V/3 V 0 0.7 1.4 mV
T
A
=25°C, Overdrive 10 mV,
Without
f
ilter: C
A
F=0
2.2 V 80 165 300
n
s
t
Res
p
onse time
W
i
t
h
o
u
t
f
i
l
t
e
r
:
C
A
F
=
0
(see Note 3, Figure 24 and
Figure 25)
3V 70 120 240
ns
t
(response)
R
e
s
p
o
n
s
e
t
i
m
e
(low-high and high-low)
T
A
=25°C, Overdrive 10 mV,
With
f
ilter: C
A
F=1
2.2 V 1.4 1.9 2.8
μ
s
W
i
t
h
f
i
l
t
e
r
:
C
A
F
=
1
(see Note 3, Figure 24 and
Figure 25)
3V 0.9 1.5 2.2
μs
NOTES: 1. The leakage current for the Comparator_A+ terminals is identical to I
lkg(Px.x)
specification.
2. The input offset voltage can be cancelled by using the CAEX bit to invert the Comparator_A+ inputs on successive measurements.
The two successive measurements are then summed together.
3. Response time measured at P1.3/CAOUT.