LM94 datasheet(18/24 Pages) NSC

18 / 24 page

14.0 Absolute Maximum

Ratings (Notes 1, 2)

If Military/Aerospace specified devices are required,

please contact the National Semiconductor Sales Office/

Distributors for availability and specifications.

Positive Supply Voltage (V

DD)

6.0V

Voltage on Any Digital Input or

Output Pin

−0.3V to 6.0V

(Except Analog

Inputs)

Voltage on +5V Input

−0.3V to +6.667V

Voltage at Positive Remote

Diode Inputs, AD_IN1, AD_IN2,

AD_IN3, and AD_IN15 Inputs

−0.3V to (V

DD + 0.05V)

Voltage at Other Analog Voltage

Inputs

−0.3V to +6.0V

Input Current at Thermal Diode

Negative Inputs

±1mA

Input Current at any pin (Note 3)

±10mA

Package Input Current (Note 3)

±100 mA

Maximum Junction Temperature

(Note 9)

JMAX)

150 ˚C

ESD Susceptibility (Note 4)

Human Body Model

3 kV

Machine Model

300V

Charged Device Model

750V

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 5)

15.0 Operating Ratings (Notes 1, 2)

MIN

≤ T

MAX

Operating Temperature Range

0˚C

≤ T

≤ +85˚C

Nominal Supply Voltage

3.3V

Supply Voltage Range (V

DD)

+3.0V to +3.6V

VID0-VID5

−0.05V to +5.5V

Digital Input Voltage Range

−0.05V to

DD + 0.05V)

Package Thermal Resistance

(Note 6)

79˚C/W

DC Electrical Characteristics

The following limits apply for +3.0 V

DC to +3.6 VDC, unless otherwise noted. Bold face limits apply for TA =TJ over TMIN to

MAX of the operating range; all other limits TA =TJ = 25˚C unless otherwise noted. TA is the ambient temperature of the

LM94; T

J is the junction temperature of the LM94; TD is the junction temperature of the thermal diode.

Symbol

Parameter

Conditions

Typical

(Note 9)

Limits

(Note 10)

Units

(Limits)

POWER SUPPLY CHARACTERISTICS

Power Supply Current

Converting, Interface and

Fans Inactive, Peak

Current

2.75

mA (max)

Converting, Interface and

Fans Inactive, Average

Current

1.6

Power-On Reset Threshold Voltage

1.6

V (min)

2.7

V (max)

TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS

Local Temperature Accuracy Over Full Range

0˚C

≤ T

≤ 85˚C

±2

±3

˚C (max)

A = +55˚C

±1

±2.5

˚C (max)

Local Temperature Resolution

˚C

Remote Thermal Diode Temperature Accuracy

Over Full Range; targeted for a typical Pentium

processor on 90 nm or 65 nm process(Note 8)

0˚C

≤ T

≤ 85˚C

and 0˚C

≤ T

≤ 100˚C

±3

˚C (max)

0˚C

≤ T

≤ 85˚C

and T

D =70˚C

±2.5

˚C (max)

Remote Thermal Diode Temperature Accuracy;

targeted for a typical Pentium processor on 90nm

or 65nm process (Note 8)

0˚C

≤ T

≤ 85˚C

and 25˚C

≤ T

≤ 70˚C

±1˚C

Remote Temperature Resolution

˚C

Thermal Diode Source Current

High Level

172

230

µA (max)

Low Level

10.75

µA

Thermal Diode Current Ratio

Total Monitoring Cycle Time

100

ms (max)

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