Rainbow-electronics LM40 Manual do Utilizador descarregar pdf (Página 4)

Absolute Maximum Ratings

(Notes 2, 1)

Supply Voltage (V

) −0.5 V to 6.0 V

Voltage at Any Digital Input or

Output Pin −0.5 V to 6.0 V

Voltage on 12V Analog Input −0.5 V to 16 V

Voltage on 5V Analog Input −0.5 V to 6.67 V

Voltage on D1+ and D2+ −0.5 V to (V+ + 0.05 V)

Voltage on Other Analog Inputs −0.5 V to 6.0 V

Current on D1- and D2-

1mA

Input Current per Pin(Note 3)

5mA

Package Input Current (Note 3)

30 mA

Package Power Dissipation (Note 4)

Output Sink Current 10 mA

ESD Susceptibility (Note 5)

Human Body Model 2500 V

Machine Model 250 V

Storage Temperature −65˚C to +150˚C

Soldering process must comply with National’s reflow

temperature profile specifications. Refer to

www.national.com/packaging/. (Note 6)

Operating Ratings

(Notes 1, 2)

Temperature Range for Electrical Characteristics

LM40CIMT (T

MIN

≤T

MAX

) 0˚C ≤ T

≤ +85˚C

Operating Temperature Range 0˚C ≤ T

≤ +125˚C

Remote Diode Temperature (T

)

Range -5 ˚C ≤T

≤+140 ˚C

Supply Voltage Range (V+) +3.0 V to +3.6 V

Analog Input Voltage Rage:

+1.2V and +2.5V −0.05V to

(V+ + 0.05V)

+3.3V_SBY (V+) +3.0V to +3.6V

+5V −0.05V to +6.67V

+12V −0.05V to +16V

DC Electrical Characteristics

The following specifications apply for V+ = +3.0 V

to +3.6 V

, and all analog source impedance R

=50Ω unless other-

wise specified in the conditions. Boldface limits apply for LM40CIMT T

MIN

=0˚C to T

MAX

=85˚C; all other limits

= +25˚C. T

is the ambient temperature of the LM40; T

is the junction temperature of the LM40; T

is the junction tem-

perature of the remote thermal diode.

POWER SUPPLY CHARACTERISTICS

Symbol Parameter Conditions

Typical

(Note 7)

Limits

(Note 8)

Units

(Limit)

V+ Power Supply Voltage 3.3

3.0

3.6

V (min)

V (max)

I+

Shutdown

Shutdown Power Supply Current

SensorPath Bus Inactive

(Note 9)

260 420 µA (max)

I+

Average

Average Power Supply Current

SensorPath Bus Inactive; all

sensors enabled;

CONV

=182 ms; (Note 9)

900 µA (max)

I+

Peak

Peak Power Supply Current

SensorPath Bus Inactive

(Note 9)

3.3 mA (max)

Power-On Reset Threshold Voltage

1.6 V (min)

2.8 V (max)

TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS

Parameter Conditions

Typical

(Note 7)

Limits

(Note 8)

Units

(Limits)

Temperature Accuracy Using the Remote Thermal

Diode, see (Note 12) for Thermal Diode Processor

Type.

= 0˚C to

+85˚C

= +25˚C

2.5 ˚C (max)

= 0˚C to

+85˚C

= 0˚C to

+100˚C

3 ˚C (max)

TJ = 0˚C to

+85˚C

= +100˚C to

+125˚C

4 ˚C (max)

Temperature Accuracy Using the Local Diode T

= 0˚C to +85˚C (Note 10)

3 ˚C (max)

Remote Diode and Local Temperature Resolution 10 Bits

0.5 ˚C

D− Source Voltage 0.7 V

LM40

www.national.com 4

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