MSP432P411VIPZ datasheet(83/212 Pages) TI1

83 / 212 page

MSP432P4111, MSP432P4011, MSP432P411Y

MSP432P401Y, MSP432P411V, MSP432P401V

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SLASEA0A – DECEMBER 2017 – REVISED FEBRUARY 2018

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Specifications

5.26.8 REF_A

Table 5-35 lists the characteristics of the REF_A built-in reference.

(1)

The internal reference current is supplied from the AVCC terminal.

(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 tSETTLE is less than ±0.5 LSB.

Table 5-35. REF_A, Built-In Reference (LDO Operation)

over recommended ranges of supply voltage and operating free-air temperature (unless otherwise noted)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VREF+

Positive built-in reference

voltage output

REFVSEL = {0} for 1.2 V, REFON = 1

1.62 V

1.2

±1%

REFVSEL = {1} for 1.45 V, REFON = 1

1.75 V

1.45

±1%

REFVSEL = {3} for 2.5 V, REFON = 1

2.8 V

2.5

±1%

AVCC(min)

AVCC minimum voltage,

Positive built-in reference

active

REFVSEL = {0} for 1.2 V

1.62

REFVSEL = {1} for 1.45 V

1.75

REFVSEL = {3} for 2.5 V

2.8

IREF+

Operating supply current into

AVCC terminal(1)

REFON = 1

3 V

µA

IO(VREF+)

VREF maximum load current,

VREF+ terminal

REFVSEL = {0, 1, 3},

AVCC = AVCC (min) for each reference level,

REFON = REFOUT = 1

–1000

+10

µA

IL(VREF+)

Load-current regulation,

VREF+ terminal

REFVSEL = {0, 1, 3},

I(VREF+) = +10 µA or –1000 µA,

AVCC = AVCC (min) for each reference level,

REFON = REFOUT = 1

2500 µV/mA

CVREF±

Capacitance at VREF+,

VREF- terminals

REFON = REFOUT = 1

100

PSRR_DC

REFOUT0

Power supply rejection ratio

(DC) after ADC buffer

AVCC = AVCC (min) for each reference level,

REFVSEL = {0, 1, 3}, REFON = 1,

REFOUT = 0

350

µV/V

PSRR_DC

REFOUT1

Power supply rejection ratio

(DC) after ADC buffer

AVCC = AVCC (min) for each reference level,

REFVSEL = {0, 1, 3}, REFON = 1,

REFOUT = 1

250

µV/V

PSRR_AC

REFOUT0

Power supply rejection ratio

(AC) after ADC buffer

AVCC = AVCC (min) for each reference level,

dAVCC = 0.1 V at 1 kHz,

REFVSEL = {0, 1, 3}, REFON = 1,

REFOUT = 0

mV/V

PSRR_AC

REFOUT1

Power supply rejection ratio

(AC) after ADC buffer

AVCC = AVCC (min) for each reference level,

dAVCC = 0.1 V at 1 kHz,

REFVSEL = {0, 1, 3}, REFON = 1,

REFOUT = 1

mV/V

TCREF+

(2)

Temperature coefficient of

built-in reference

REFVSEL = {0, 1, 3}, REFON = 1,

TA = –40°C to 85°C

ppm/°

tSETTLE

Settling time of reference

voltage(3)

AVCC = AVCC (min) to AVCC(max)

REFVSEL = {0, 1, 3}, REFON = 0

→ 1

µs

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