V62SLASH13624-01XE-R datasheet(40/77 Pages) TI1

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MSP430F2132-EP

SLAS913A – JULY 2013 – REVISED AUGUST 2013

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(1)

Not ensured for TA > 105°C.

(2)

The capacitance applied to the internal buffer operational amplifier, if switched to terminal P2.4/TA2/A4/VREF+/VeREF+ (REFOUT = 1),

must be limited; otherwise, the reference buffer may become unstable.

(3)

Calculated using the box method:

I temperature: (MAX(-40 to 85°C) – MIN(-40 to 85°C)) / MIN(-40 to 85°C) / (85°C – (–40°C))

T temperature: (MAX(-40 to 105°C) – MIN(-40 to 105°C)) / MIN(-40 to 105°C) / (105°C – (–40°C))

(4)

Calculated using the box method: ((MAX(VREF(T)) -- MIN(VREF(T))) / MIN(VREF(T)) / (TMAX - TMIN)

(5)

The condition is that the error in a conversion started after tREFON or tRefBuf is less than ±0.5 LSB.

5.31 10-Bit ADC, Built-In Voltage Reference

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

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

VCC,REF+

Positive built-in

reference analog

supply voltage range

IVREF+ ≤ 1 mA, REF2_5V = 0

2.2

IVREF+ ≤ 0.5 mA, REF2_5V = 1

2.8

IVREF+ ≤ 1 mA, REF2_5V = 1

2.9

VREF+

Positive built-in

reference voltage

IVREF+ ≤ IVREF+max, REF2_5V = 0

2.2 V, 3 V

1.40

1.5

1.60

IVREF+ ≤ IVREF+max, REF2_5V = 1

3 V

2.30

2.5

2.70

ILD,VREF+

Maximum VREF+

load current

2.2 V

±0.5

3 V

±1

VREF+ load

regulation

IVREF+ = 500 µA ± 100 µA,

Analog input voltage VAx ≈ 0.75 V,

REF2_5V = 0

2.2 V, 3 V

±2

LSB

IVREF+ = 500 µA ± 100 µA,

Analog input voltage VAx ≈ 1.25 V,

REF2_5V = 1

3 V

±2

VREF+ load

regulation response

time(1)

IVREF+ = 100 µA to 900 µA,

VAx ≈ 0.5 x VREF+,

Error of conversion result

≤1 LSB

ADC10SR = 0

3 V

400

ADC10SR = 1

2000

CVREF+

Maximum

capacitance at pin

VREF+

(2)

IVREF+ ≤ ±1 mA, REFON = 1, REFOUT = 1

2.2 V, 3 V

100

TCREF+

Temperature

coefficient(3)

IVREF+ = constant with

0 mA

≤ IVREF+ ≤ 1 mA

(4)

-40°C to 85°C

2.2 V, 3 V

±100

ppm/°C

-40°C to 105°C

±110

tREFON

Settling time of

internal reference

voltage(1)(5)

IVREF+ = 0.5 mA, REF2_5V = 0,

REFON = 0 to 1

3.6 V

µs

tREFBURST

Settling time of

reference buffer(1)(5)

IVREF+ = 0.5 mA,

REF2_5V = 0,

REFON = 1,

REFBURST = 1

ADC10SR = 0

2.2 V

µs

ADC10SR = 1

2.5

IVREF+ = 0.5 mA,

REF2_5V = 1,

REFON = 1,

REFBURST = 1

ADC10SR = 0

3 V

ADC10SR = 1

4.5

V62/13624-01XE-R Datasheet(PDF) 40 Page - Texas Instruments

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