MSP432P401R Datasheet, PDF (49/157 Pages) Texas Instruments – Mixed-Signal Microcontrollers

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MSP432P401R, MSP432P401M
SLAS826B – MARCH 2015 – REVISED FEBRUARY 2016
5.10.7 REF_A
Table 5-43. REF_A, Built-In Reference
over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)
PARAMETER
TEST CONDITIONS
REFVSEL = {0} for 1.2 V
REFON = 1
V_CC
1.62 V
MIN TYP MAX UNIT
1.2 ±1%
V_REF+
Positive built-in reference
voltage output
REFVSEL = {1} for 1.45 V
REFON = 1
REFVSEL = {2} for 2.0 V
REFON = 1
1.75 V
2.3 V
1.45 ±1%
V
2.0 ±1%
REFVSEL = {3} for 2.5 V
REFON = 1
2.8 V
2.5 ±1%
AV_CC(min)
AVCC minimum voltage,
Positive built-in reference
active
REFVSEL = {0} for 1.2 V
REFVSEL = {1} for 1.45 V
REFVSEL = {2} for 2.0 V
REFVSEL = {3} for 2.5 V
1.62
1.75
V
2.3
2.8
I_REF+
Operating supply current into
AVCC terminal⁽¹⁾
REFON = 1
3V
12
20
µA
I_L(VREF+)
Load-current regulation,
VREF+ terminal
REFVSEL = {0, 1, 2, 3}, I(VREF+) = +10
µA/–1000 µA,
AVCC = AVCC(min) for each reference level,
REFON = REFOUT = 1
2500 µV/mA
C_VREF±
Capacitance at VREF+,
VREF- terminals
REFON = REFOUT = 1
0
100 pF
PSRR_DC Power supply rejection ratio
REFOUT0 ^{(DC) after ADC buffer}
AVCC = AVCC(min) for each reference level,
REFVSEL = {0,1,2, 3}, REFON = 1,
REFOUT = 0
120 300 µV/V
PSRR_DC Power supply rejection ratio
REFOUT1 ^{(DC) after ADC buffer}
AVCC = AVCC(min) for each reference level,
REFVSEL = {0,1,2, 3}, REFON = 1,
REFOUT = 1
50 100 µV/V
PSRR_AC Power supply rejection ratio
REFOUT0 ^{(AC) after ADC buffer}
AVCC = AVCC(min) for each reference level,
dAVCC = 0.1V at 1 kHz,
REFVSEL = {0,1,2, 3}, REFON = 1,
REFOUT = 0
6.4
10 mV/V
PSRR_AC Power supply rejection ratio
REFOUT1 ^{(AC) after ADC buffer}
AVCC = AVCC(min) for each reference level,
dAVCC = 0.1V at 1 kHz,
REFVSEL = {0,1,2, 3}, REFON = 1,
REFOUT = 1
2
5 mV/V
TC_REF+ ⁽²⁾
Temperature coefficient of
built-in reference
REFVSEL = {0, 1, 2, 3}, REFON = 1, T_A =
–40°C to 85°C
<10
20
ppm/°
C
TC_REF+ ⁽²⁾
Temperature coefficient of
built-in reference
REFVSEL = {0, 1, 2, 3}, REFON = 1, T_A = 0°C
to 50°C
<5
15
ppm/°
C
t_SETTLE
Settling time of reference
voltage ⁽³⁾
AV_CC = AV_{CC (min)} - AV_CC(max)
REFVSEL = {0, 1, 2, 3}, REFON = 0 → 1
75
90 µs
(1) The internal reference current is supplied from terminal AVCC.
(2) Calculated using the box method: (MAX(–40°C to 85°C) – MIN(–40°C to 85°C)) / MIN(–40°C to 85°C)/(85°C – (–40°C)).
(3) The condition is that the error in a ADC conversion started after t_SETTLE is less than ±0.5 LSB.
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Specifications
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