Datasheet

MSP430F20x3
MSP430F20x2
MSP430F20x1
SLAS491I –AUGUST 2005–REVISED DECEMBER 2012 www.ti.com
Comparator_A+ (MSP430F20x1)
(1)
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER TEST CONDITIONS V
CC
MIN TYP MAX UNIT
2.2 V 25 40
I
(DD)
CAON = 1, CARSEL = 0, CAREF = 0 μA
3 V 45 60
2.2 V 30 50
CAON = 1, CARSEL = 0, CAREF = 1/2/3,
I
(Refladder/RefDiode)
μA
No load at P1.0/CA0 and P1.1/CA1
3 V 45 71
Common-mode input voltage
V
IC
CAON = 1 2.2 V, 3 V 0 V
CC
- 1 V
range
Voltage at 0.25 V
CC
node / PCA0 = 1, CARSEL = 1, CAREF = 1,
V
(Ref025)
2.2 V, 3 V 0.23 0.24 0.25
V
CC
No load at P1.0/CA0 and P1.1/CA1
Voltage at 0.5 V
CC
node / PCA0 = 1, CARSEL = 1, CAREF = 2,
V
(Ref050)
2.2 V, 3 V 0.47 0.48 0.5
V
CC
No load at P1.0/CA0 and P1.1/CA1
PCA0 = 1, CARSEL = 1, CAREF = 3, 2.2 V 390 480 540
V
(RefVT)
See Figure 20 and Figure 21 No load at P1.0/CA0 and P1.1/CA1, mV
3 V 400 490 550
T
A
= 85°C
V
p
- V
S
Offset voltage
(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, Overdrive 10 mV, 2.2 V 80 165 300
Without filter: CAF = 0
(3)
ns
3 V 70 120 240
(see Figure 16 and Figure 17)
Response time
t
(response)
(low-high and high-low)
T
A
= 25°C, Overdrive 10 mV, 2.2 V 1.4 1.9 2.8
With filter: CAF = 1
(3)
μs
3 V 0.9 1.5 2.2
(see Figure 16 and Figure 17)
(1) The leakage current for the Comparator_A+ terminals is identical to I
lkg(Px.y)
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
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