LM90 datasheet(4/32 Pages) TI

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LM90

SNIS126A – MAY 2004 – REVISED MARCH 2013

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These devices have limited built-in ESD protection. The leads should be shorted together or the device placed in conductive foam

during storage or handling to prevent electrostatic damage to the MOS gates.

Absolute Maximum Ratings

(1)

Supply Voltage

−0.3 V to 6.0 V

Voltage at SMBData, SMBCLK, ALERT, T_CRIT_A

−0.5 V to 6.0 V

Voltage at Other Pins

−0.3 V to (VDD + 0.3

− Input Current

±1 mA

Input Current at All Other Pins (2)

±5 mA

Package Input Current (2)

30 mA

SMBData, ALERT, T_CRIT_A Output Sink Current

10 mA

Storage Temperature

−65°C to +150°C

Soldering Information, Lead Temperature

VSSOP Package (3)

Vapor Phase (60 seconds)

215°C

Infrared (15 seconds)

220°C

ESD Susceptibility (4)

Human Body Model

2000 V

Machine Model

200 V

(1)

Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not

apply when operating the device beyond its rated operating conditions.

(2)

When the input voltage (VI) at any pin exceeds the power supplies (VI < GND or VI > VDD), the current at that pin should be limited to

5 mA. Parasitic components and or ESD protection circuitry are shown in the figure below for the LM90's pins. The nominal breakdown

voltage of D3 is 6.5 V. Care should be taken not to forward bias the parasitic diode, D1, present on pins: D+, D

−. Doing so by more than

50 mV may corrupt a temperature measurements.

(3)

See http://www.ti.com/packaging/ for other recommendations and methods of soldering surface mount devices.

(4)

Human body model, 100pF discharged through a 1.5k

Ω resistor. Machine model, 200pF discharged directly into each pin.

Operating Ratings

Operating Temperature Range

0°C to +125°C

Electrical Characteristics Temperature Range

TMIN ≤ TA ≤ TMAX

LM90

0°C

≤ TA ≤ +85°C

Supply Voltage Range (VDD)

+3.0 V to +3.6 V

Temperature-to-Digital Converter Characteristics

Unless otherwise noted, these specifications apply for VDD= +3.0Vdc to 3.6Vdc. Boldface limits apply for TA = TJ = TMIN ≤

TA ≤ TMAX; all other limits TA= TJ= +25°C, unless otherwise noted.

Typical(1)

Limits(2)

Units

Parameter

Conditions

(Limit)

Temperature Error Using Local Diode

TA = +25°C to +125°C

(3)

±1.5

±4

°C (max)

Temperature Error Using Remote Diode of mobile

TA = +30°C to

TD = +25°C to

±3

°C (max)

Pentium III with typical non-ideality of 1.008. (TD is

+50°C

+100°C

the Remote Diode Junction Temperature)

TA = +0°C to +85°C

TD = +25°C to

±4

°C (max)

+125°C

Remote Diode Measurement Resolution

Bits

0.125

°C

Local Diode Measurement Resolution

Bits

°C

(1)

Typicals are at TA = 25°C and represent most likely parametric norm.

(2)

Limits are ensured to AOQL (Average Outgoing Quality Level).

(3)

Local temperature accuracy does not include the effects of self-heating. The rise in temperature due to self-heating is the product of the

internal power dissipation of the LM90 and the thermal resistance. See () for the thermal resistance to be used in the self-heating

calculation.

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