V62SLASH13624-01XE-R datasheet(42/77 Pages) TI1

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MSP430F2132-EP

SLAS913A – JULY 2013 – REVISED AUGUST 2013

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(1)

The reference buffer offset adds to the gain and total unadjusted error.

5.34 10-Bit ADC, Linearity Parameters

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

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

Integral linearity error

2.2 V, 3 V

±1.2

LSB

Differential linearity error

2.2 V, 3 V

±1.2

LSB

Offset error

Source impedance RS < 100 Ω

2.2 V, 3 V

±1.2

LSB

Gain error

SREFx = 010, unbuffered external reference,

VeREF+ = 1.5 V

2.2 V

±1.1

±2

LSB

SREFx = 010, unbuffered external reference,

VeREF+ = 2.5 V

3 V

±1.1

±2

SREFx = 011, buffered external reference(1),

VeREF+ = 1.5 V

2.2 V

±1.1

±4.5

SREFx = 011, buffered external reference(1),

VeREF+ = 2.5 V

3 V

±1.1

±3.5

Total unadjusted error

SREFx = 010, unbuffered external reference,

VeREF+ = 1.5 V

2.2 V

±2

±5

LSB

SREFx = 010, unbuffered external reference,

VeREF+ = 2.5 V

3 V

±2

±5

SREFx = 011, buffered external reference(1),

VeREF+ = 1.5 V

2.2 V

±2

±7.5

SREFx = 011, buffered external reference(1),

VeREF+ = 2.5 V

3 V

±2

±6.5

(1)

The sensor current ISENSOR is consumed if (ADC10ON = 1 and REFON = 1) or (ADC10ON = 1 and INCH = 0Ah and sample signal is

high). When REFON = 1, ISENSOR is included in IREF+.When REFON = 0, ISENSOR applies during conversion of the temperature sensor

input (INCH = 0Ah).

(2)

The following formula can be used to calculate the temperature sensor output voltage:

VSensor,typ = TCSensor ( 273 + T [°C] ) + VOffset,sensor [mV] or

VSensor,typ = TCSensor T [°C] + VSensor(TA = 0°C) [mV]

(3)

Not ensured for TA > 105°C.

(4)

Results based on characterization and/or production test, not TCSensor or VOffset,sensor.

(5)

No additional current is needed. The VMID is used during sampling.

(6)

The on time, tVMID(on), is included in the sampling time, tVMID(sample); no additional on time is needed.

5.35 10-Bit ADC, Temperature Sensor and Built-In VMID

(1)

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

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

ISENSOR

Temperature sensor supply

current(1)

REFON = 0, INCHx = 0Ah,

ADC10ON = 1, TA = 25°C

2.2 V

120

µA

3 V

160

TCSENSOR

ADC10ON = 1, INCHx = 0Ah(2)

2.2 V, 3 V

3.55

mV/°C

VOffset,Sensor

Sensor offset voltage(3)

ADC10ON = 1, INCHx = 0Ah(2)

-100

+100

VSENSOR

Sensor output voltage(4)

Temperature sensor voltage at

TA = 125°C (Q version only)

2.2 V, 3 V

1205

1365

1465

Temperature sensor voltage at TA = 85°C

1195

1295

1395

Temperature sensor voltage at TA = 25°C

985

1085

1185

Temperature sensor voltage at TA = 0°C

895

995

1095

tSENSOR(sample)

Sample time required if

channel 10 is selected(5)

ADC10ON = 1, INCHx = 0Ah,

Error of conversion result

≤ 1 LSB

2.2 V, 3 V

µs

IVMID

Current into divider at

channel 11(5)

ADC10ON = 1, INCHx = 0Bh

2.2 V

N/A(5)

µA

3 V

N/A(5)

VMID

VCC divider at channel 11

ADC10ON = 1, INCHx = 0Bh,

VMID ≈ 0.5 × VCC

2.2 V

1.05

1.1

1.15

3 V

1.45

1.5

1.55

tVMID(sample)

Sample time required if

channel 11 is selected(6)

ADC10ON = 1, INCHx = 0Bh,

Error of conversion result

≤ 1 LSB

2.2 V

1600

3 V

1600

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