Datasheet

MSP430x41x
MIXED SIGNAL MICROCONTROLLER
SLAS340J − MAY 2001 − REVISED DECEMBER 2008
28
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
electrical characteristics over recommended operating free-air temperature (unless otherwise
noted) (continued)
Comparator_A (see Note 1)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
I
CAON 1 CARSEL 0 CAREF 0
2.2 V 25 40
A
I
(CC)
CAON = 1, CARSEL = 0, CAREF = 0
3 V 45 60
μA
I
CAON = 1, CARSEL = 0,
CAREF 1/2/3
2.2 V 30 50
A
I
(Refladder/RefDiode)
CAREF = 1/2/3,
No load at P1.6/CA0 and P1.7/CA1
3 V 45 71
μA
V
(Ref025)
Voltage @ 0.25 V
CC
node
V
CC
PCA0 = 1, CARSEL = 1, CAREF = 1,
No load at P1.6/CA0 and P1.7/CA1
2.2 V / 3 V 0.23 0.24 0.25
V
(Ref050)
Voltage @ 0.5 V
CC
node
V
CC
PCA0 = 1, CARSEL = 1, CAREF = 2,
No load at P1.6/CA0 and P1.7/CA1
2.2V / 3 V 0.47 0.48 0.50
V
See Fi
g
ure 10 and
PCA0 = 1, CARSEL = 1, CAREF = 3,
No load at P1 6/CA0 and P1 7/CA1;
2.2 V 390 480 540
mV
V
(RefVT)
See
Figure
10
and
Figure 11
No load at P1.6/CA0 and P1.7/CA1;
T
A
= 85°C
3 V 400 490 550
mV
V
(IC)
Common-mode input
voltage range
CAON = 1 2. 2 V/3 V 0 V
CC
−1.0 V
V
(offset)
Offset voltage See Note 2 2.2 V/3 V −30 30 mV
V
hys
Input hysteresis CAON = 1 2.2 V/3 V 0 0.7 1.4 mV
T
A
= 25°C,
2.2 V 160 210 300
ns
t
T
A
=
25 C
,
Overdrive 10 mV, Without filter: CAF = 0
3 V 80 150 240
ns
t
(response LH)
T
A
= 25°C
2.2 V 1.4 1.9 3.4
s
T
A
=
25 C
Overdrive 10 mV, With filter: CAF = 1
3 V 0.9 1.5 2.6
μs
T
A
= 25°C
2.2 V 130 210 300
ns
t
T
A
=
25 C
Overdrive 10 mV, Without filter: CAF = 0
3 V 80 150 240
ns
t
(response HL)
T
A
= 25°C,
2.2 V 1.4 1.9 3.4
s
T
A
=
25 C
,
Overdrive 10 mV, With filter: CAF = 1
3 V 0.9 1.5 2.6
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.