Datasheet

T
A
− Free-Air Temperature − °C
400
450
500
550
600
650
−45 −25 −5 15 35 55 75 95
V
CC
= 3 V
Typical
V
(RefVT)
− Reference Voltage − mV
REFERENCE VOLTAGE
vs
FREE-AIR TEMPERATURE
Voltage@0.5V node
CC
V
CC
Voltage@0.25V node
CC
V
CC
MSP430FW429, MSP430FW428
MSP430FW427, MSP430FW425, MSP430FW423
SLAS383E –OCTOBER 2003–REVISED DECEMBER 2013 www.ti.com
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
(CC)
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 P1.6/CA0 and P1.7/CA1
3 V 45 71
PCA0 = 1, CARSEL = 1, CAREF = 1,
V
(Ref025)
2.2 V, 3 V 0.23 0.24 0.25
No load at P1.6/CA0 and P1.7/CA1
PCA0 = 1, CARSEL = 1, CAREF = 2,
V
(Ref050)
2.2 V, 3 V 0.47 0.48 0.5
No load at P1.6/CA0 and P1.7/CA1
PCA0 = 1, CARSEL = 1, CAREF = 3, 2.2 V 390 480 540
V
(RefVT)
See Figure 6, Figure 7 No load at P1 6/CA0 and P1 7/CA1, mV
3 V 400 490 550
T
A
= 85°C
Common-mode input
V
IC
CAON = 1 2.2 V, 3 V 0 V
CC
- 1 V
voltage range
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
2.2 V 130 210 300
T
A
= 25°C
ns
Overdrive 10 mV, without filter: CAF = 0
3 V 80 150 240
t
(response LH)
2.2 V 1.4 1.9 3.4
T
A
= 25°C
µs
Overdrive 10 mV, with filter: CAF = 1
3 V 0.9 1.5 2.6
t
(response HL)
2.2 V 130 210 300
T
A
= 25°C
ns
Overdrive 10 mV, without filter: CAF = 0
3 V 80 150 240
2.2 V 1.4 1.9 3.4
T
A
= 25°C
µs
Overdrive 10 mV, with filter: CAF = 1
3 V 0.9 1.5 2.6
(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.
Figure 6.
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