MSP430FG439 Datasheet, PDF (19/88 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP430FG439, MSP430FG438, MSP430FG437
SLAS380D – APRIL 2004 – REVISED NOVEMBER 2014
5.14 Comparator_A⁽¹⁾
over recommended operating free-air temperature range (unless otherwise noted)
I_(CC)
PARAMETER
TEST CONDITIONS
CAON = 1, CARSEL = 0, CAREF = 0
V_CC
2.2 V
3V
MIN TYP MAX UNIT
25
40
µA
45
60
I_{(Refladder/RefDiode)}
CAON = 1, CARSEL = 0, CAREF = (1,2,3),
No load at P1.6/CA0 and P1.7/CA1
2.2 V
3V
30
50
µA
45
71
V_(Ref025)
V_(Ref050)
V_(RefVT)
V_IC
V_p – V_S
V_hys
(Voltage at 0.25 V_CC node) /
V_CC
(Voltage at 0.55 V_CC node) /
V_CC
See Figure 5-6 and Figure 5-7
Common-mode input
voltage range
Offset voltage
PCA0 = 1, CARSEL = 1, CAREF = 1,
No load at P1.6/CA0 and P1.7/CA1
PCA0 = 1, CARSEL = 1, CAREF = 2,
No load at P1.6/CA0 and P1.7/CA1
PCA0 = 1, CARSEL = 1, CAREF = 3,
No load at P1.6/CA0 and P1.7/CA1,
T_A = 85°C
CAON = 1
See ⁽²⁾
Input hysteresis
CAON = 1
t_{(response LH)}
T_A = 25°C,
Overdrive 10 mV, without filter: CAF = 0
T_A = 25°C,
Overdrive 10 mV, with filter: CAF = 1
2.2 V, 3 V
2.2 V, 3 V
2.2 V
3V
2.2 V, 3 V
2.2 V, 3 V
2.2 V, 3 V
2.2 V
3V
2.2 V
3V
0.23
0.47
390
400
0
–30
0
160
80
1.4
0.9
0.24 0.25
0.48 0.5
480 540
mV
490 550
V_CC
–1
V
30 mV
0.7 1.4 mV
210 300
ns
150 240
1.9 3.4
µs
1.5 2.6
t_{(response HL)}
T_A = 25°C,
Overdrive 10 mV, without filter: CAF = 0
2.2 V
3V
130
210 300
ns
80
150 240
T_A = 25°C,
Overdrive 10 mV, with filter: CAF = 1
2.2 V
3V
1.4
1.9 3.4
µs
0.9
1.5 2.6
(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.
5.15 Comparator_A Typical Characteristics
650
650
V_CC = 3 V
600
600
Typical
550
550
V_CC = 2.2 V
Typical
500
500
450
450
400
-45 -25 -5 15 35 55 75 95
T_A - Free-Air Temperature - °C
Figure 5-6. Reference Voltage vs Free-Air Temperature
400
-45 -25 -5 15 35 55 75 95
T_A - Free-Air Temperature - °C
Figure 5-7. Reference Voltage vs Free-Air Temperature
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Specifications
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