Datasheet

MSP430F261x
MSP430F241x
www.ti.com SLAS541K –JUNE 2007–REVISED NOVEMBER 2012
Comparator_A+
(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 P2 3/CA0/TA1 and P2.4/CA1/TA2
3 V 45 71
Common-mode input
V
IC
CAON = 1 2.2 V, 3 V 0 V
CC
- 1 V
voltage range
(Voltage at 0.25 V
CC
PCA0 = 1, CARSEL = 1, CAREF = 1,
V
(Ref025)
2.2 V, 3 V 0.23 0.24 0.25
node) ÷ V
CC
No load at P2 3/CA0/TA1 and P2.4/CA1/TA2
(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 P2 3/CA0/TA1 and P2.4/CA1/TA2
PCA0 = 1, CARSEL = 1, CAREF = 3, 2.2 V 390 480 540
See Figure 35 and
V
(RefVT)
No load at P2 3/CA0/TA1 and P2.4/CA1/TA2, mV
Figure 36
3 V 400 490 550
T
A
= 85°C
V
(offset)
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
2.2 V 80 165 300
T
A
= 25°C, Overdrive 10 mV,
Response time, low to
ns
Without filter: CAF = 0
3 V 70 120 240
high and high to low
(3)
t
(response)
(see Figure 32 and
2.2 V 1.4 1.9 2.8
T
A
= 25°C, Overdrive 10 mV,
µs
Figure 33)
With filter: CAF = 1
3 V 0.9 1.5 2.2
(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) The response time is measured at P2.2/CAOUT/TA0/CA4 with an input voltage step and with Comparator_A+ already enabled
(CAON = 1). If CAON is set at the same time, a settling time of up to 300 ns is added to the response time.
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