CC430F613 datasheet(67/120 Pages) TI

67 / 120 page

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-40 -30 -20 -10 0

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Ambient Temperature - ˚C

ECCN 5E002 TSPA - Technology / Software Publicly Available

CC430F613x

CC430F612x

CC430F513x

www.ti.com

SLAS554G – MAY 2009 – REVISED FEBRUARY 2013

12-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

2.2 V

680

ADC12ON = 1, INCH = 0Ah,

VSENSOR

See (2) (3)

TA = 0°C

3 V

680

2.2 V

2.25

TCSENSOR

See (3)

ADC12ON = 1, INCH = 0Ah

mV/°C

3 V

2.25

2.2 V

Sample time required if

ADC12ON = 1, INCH = 0Ah,

tSENSOR(sample)

µs

channel 10 is selected(4)

Error of conversion result

≤ 1 LSB

3 V

AVCC divider at channel 11,

ADC12ON = 1, INCH = 0Bh

0.48

0.5

0.52 VAVCC

VAVCC factor

VMID

2.2 V

1.06

1.1

1.14

AVCC divider at channel 11

ADC12ON = 1, INCH = 0Bh

3 V

1.44

1.5

1.56

Sample time required if

ADC12ON = 1, INCH = 0Bh,

tVMID(sample)

2.2 V, 3 V

1000

channel 11 is selected(5)

Error of conversion result

≤ 1 LSB

(1)

The temperature sensor is provided by the REF module. See the REF module parametric, IREF+, regarding the current consumption of

the temperature sensor.

(2)

The temperature sensor offset can be as much as ±20°C. A single-point calibration is recommended in order to minimize the offset error

of the built-in temperature sensor.

(3)

The device descriptor structure contains calibration values for 30°C ± 3°C and 85°C ± 3°C for each of the available reference voltage

levels. The sensor voltage can be computed as VSENSE = TCSENSOR * (Temperature, °C) + VSENSOR, where TCSENSOR and VSENSOR can

be computed from the calibration values for higher accuracy.

(4)

The typical equivalent impedance of the sensor is 51 k

Ω. The sample time required includes the sensor-on time tSENSOR(on).

(5)

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

Figure 20. Typical Temperature Sensor Voltage

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