LM64 datasheet(5/29 Pages) NSC

5 / 29 page

Absolute Maximum Ratings (Notes 1,

Supply Voltage, V

−0.3 V to 6.0 V

Voltage on SMBDAT, SMBCLK,

ALERT, T_Crit, PWM Pins

−0.5 V to 6.0 V

Voltage on Other Pins

−0.3 V to (V

DD +0.3V)

Input Current, D− Pin

±1mA

Input Current at All Other Pins (Note 3)

5 mA

Package Input Current (Note 3)

30 mA

Package Power Dissipation

(Note 5)

SMBDAT, ALERT, T_Crit, PWM pins

Output Sink Current

10 mA

Storage Temperature

−65˚C to +150˚C

ESD Susceptibility (Note 4)

Human Body Model

2000 V

Machine Model

200 V

SMT Soldering Information

See National Semiconductor Application Note AN-1187,

"Leadless Leadframe Package" for information on SMT

Assembly using LLP Packages. This is available at

http://www.national.com/an/AN/AN-1187.pdf.

Operating Ratings (Notes 1, 2)

LM64 Operating Temperature Range

0˚C

≤ T

≤ +85˚C

Remote Diode Temperature Range

25˚C

≤ T

≤ +140˚C

Electrical Characteristics

MIN

≤ T

MAX

Supply Voltage Range (V

DD)

+3.0 V to +3.6 V

DC Electrical Characteristics

TEMPERATURE-TO-DIGITAL CONVERTER CHARACTERISTICS The following specifications apply for V

DD = 3.0 VDC to

3.6 VDC, and all analog source impedance R

S =50

Ω unless otherwise specified in the conditions. Boldface limits apply for

A =TMIN to TMAX; all other limits TA = +25˚C.

Parameter

Conditions

Typical

(Note 7)

Limits

(Note 8)

Units

(Limits)

Temperature Error using a diode-connected

MMBT3904 transistor. T

D is the Remote

Diode Junction Temperature.

D =TLM64 + 16˚C

A = +30˚C to

+50˚C

D = +120˚C to

+140˚C

±1

˚C (max)

A = +0˚C to

+85˚C

D = +25˚C to

+140˚C

±3

˚C (max)

Temperature Error Using the Local Diode

A = +25˚C to +125˚C (Note 10)

±1

±3

˚C (max)

Remote Diode Resolution

Bits

0.125

˚C

Local Diode Resolution

Bits

1˚C

Conversion Time of All Temperatures

Fastest Setting

31.25

34.4

ms (max)

D− Source Voltage

0.7

Diode Source Current

D+ −VD−) = +0.65 V; High

Current

160

315

µA (max)

110

µA (min)

Low Current

µA (max)

µA (min)

Operating Electrical Characteristics

Parameter

Conditions

Typ

(Note 7)

Limits

(Note 8)

Units

ALERT, T_Crit and PWM Output Saturation

Voltage

ALERT, T_Crit

PWM

OUT

4mA

6 mA

0.4

V (max)

OUT

6mA

0.55

Power-On-Reset Threshold Voltage

2.4

V (max)

1.8

V (min)

Supply Current (Note 9)

SMBus Inactive, 16 Hz

Conversion Rate

1.1

2.0

mA (max)

STANDBY Mode

320

µA

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