MSP430F2002IPWR datasheet(43/88 Pages) TI

43 / 88 page

MSP430x20x1, MSP430x20x2, MSP430x20x3

MIXED SIGNAL MICROCONTROLLER

SLAS491D -- AUGUST 2005 -- REVISED SEPTEMBER 2007

POST OFFICE BOX 655303

• DALLAS, TEXAS 75265

MSP430x20x2 electrical characteristics over recommended ranges of supply voltage and

operating free-air temperature (unless otherwise noted) (continued)

10-bit ADC, temperature sensor and built-in VMID (MSP430x20x2 only)

PARAMETER

TEST CONDITIONS

VCC

MIN

TYP

MAX

UNIT

Temperature sensor supply

REFON = 0, INCHx =0Ah,

2.2 V

120

ISENSOR

Temperature sensor supply

current (see Note 1)

REFON = 0, INCHx = 0Ah,

TA =25_C

160

μA

TCSENSOR

ADC10ON = 1, INCHx = 0Ah

(see Note 2)

2.2 V/3 V

3.44

3.55

3.66

mV/°C

VOffset,Sensor

Sensor offset voltage

ADC10ON = 1, INCHx = 0Ah

(see Note 2)

--100

100

Temperature sensor voltage

at TA = 105°C (T Version only)

2.2 V/3 V

1265

1365

1465

Sensor output voltage

Temperature sensor voltage

at TA =85°C

2.2 V/3 V

1195

1295

1395

VSensor

Sensor output voltage

(see Note 3)

Temperature sensor voltage

at TA =25°C

2.2 V/3 V

985

1085

1185

Temperature sensor voltage

at TA =0°C

2.2 V/3 V

895

995

1095

tSensor(sample)

Sample time required if

channel 10 is selected (see

Note 4)

ADC10ON = 1, INCHx = 0Ah,

Error of conversion result ≤ 1LSB

2.2 V/3 V

μs

Current into divider at channel

ADC10ON 1 INCHx 0Bh

2.2 V

IVMID

Current into divider at channel

11 (see Note 5)

ADC10ON = 1, INCHx =0Bh,

μA

divider at channel 11

ADC10ON = 1, INCHx =0Bh,

2.2 V

1.06

1.1

1.14

VMID

VCC divider at channel 11

ADC10ON = 1, INCHx = 0Bh,

VMID is ≈0.5 x VCC

1.46

1.5

1.54

Sample time required if

channel 11 is selected (see

ADC10ON = 1, INCHx =0Bh,

2.2 V

1400

tVMID(sample)

channel 11 is selected (see

Note 6)

ADC10ON = 1, INCHx = 0Bh,

Error of conversion result ≤ 1LSB

1220

NOTES: 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. Values are not based on calculations using TCSensor or VOffset,sensor but on measurements.

4. The typical equivalent impedance of the sensor is 51 kΩ. The sample time required includes the sensor-on time tSENSOR(on).

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.

MSP430F2002IPWR Datasheet(PDF) 43 Page - Texas Instruments

MSP430F2002IPWR Datasheet(HTML) 43 Page - Texas Instruments

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