LM73 datasheet(5/30 Pages) TI

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LM73

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SNIS141F – OCTOBER 2005 – REVISED OCTOBER 2015

6.5 Temperature-to-Digital Converter Characteristics

Unless otherwise noted, these specifications apply for VDD = 2.7 V to 5.5 V. All limits TA = TJ = 25°C, unless otherwise noted.

TA is the ambient temperature. TJ is the junction temperature.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX(1)

UNIT

TA = −10°C to 80°C

TA = TJ =TMIN to TMAX

±1

°C

VDD = 2.7V

TA = −25°C to 115°C

TA = TJ =TMIN to TMAX

±1.5

°C

VDD = 4.5V

TA = −40°C to 150°C

TA = TJ =TMIN to TMAX

±2

°C

Accuracy (2)

TA = −10°C to 80°C

TA = TJ =TMIN to TMAX

±1.5

°C

VDD > 4.5V

TA = −25°C to 115°C

TA = TJ =TMIN to TMAX

±2

°C

VDD = 5.5V

TA = −40°C to 150°C

TA = TJ =TMIN to TMAX

±2.5

°C

Bits

RES1 Bit = 0, RES0 Bit = 0

0.25

°C/LSB

Bits

RES1 Bit = 0, RES0 Bit = 1

0.125

°C/LSB

Resolution

Bits

RES1 Bit = 1, RES0 Bit = 0

0.0625

°C/LSB

Bits

RES1 Bit = 1, RES0 Bit = 1

0.03125

°C/LSB

10.1

RES1 Bit = 0, RES0 Bit = 0

TA = TJ =TMIN to TMAX

20.2

RES1 Bit = 0, RES0 Bit = 1

TA = TJ =TMIN to TMAX

Temperature

Conversion Time (3)

40.4

RES1 Bit = 1, RES0 Bit = 0

TA = TJ =TMIN to TMAX

80.8

RES1 Bit = 1, RES0 Bit = 1

TA = TJ =TMIN to TMAX

112

320

Continuous Conversion Mode,

µA

SMBus inactive

TA = TJ =TMIN to TMAX

495

120

Quiescent Current

Shutdown, bus-idle timers on

µA

TA = TJ =TMIN to TMAX

175

1.9

Shutdown, bus-idle timers off

µA

TA = TJ =TMIN to TMAX

Power-On Reset

Measured on VDD input, falling edge TA = TJ =TMIN to TMAX

0.9

Threshold

(1)

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

(2)

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 LM73 and the thermal resistance.

(3)

This specification is provided only to indicate how often temperature data is updated. The LM73 can be read at any time without regard

to conversion state (and will yield last conversion result).

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