LM40 datasheet(4/27 Pages) NSC

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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

DC to +3.6 VDC, and all analog source impedance RS =50

Ω unless other-

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

A =TJ =TMIN=0˚C to TMAX=85˚C; all other limits

A = +25˚C. TA is the ambient temperature of the LM40; TJ is the junction temperature of the LM40; TD 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.

J = 0˚C to

+85˚C

D = +25˚C

±1

±2.5

˚C (max)

J = 0˚C to

+85˚C

D = 0˚C to

+100˚C

±3

˚C (max)

TJ = 0˚C to

+85˚C

D = +100˚C to

+125˚C

±4

˚C (max)

Temperature Accuracy Using the Local Diode

J = 0˚C to +85˚C (Note 10)

±1

±3

˚C (max)

Remote Diode and Local Temperature Resolution

Bits

0.5

˚C

D− Source Voltage

0.7

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