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LM73-Q1

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SNIS194 – DECEMBER 2016

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Copyright © 2016, Texas Instruments Incorporated

(1)

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-Q1 and the thermal resistance.

(2)

This specification is provided only to indicate how often temperature data is updated. The LM73-Q1 can be read at any time without

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

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

UNIT

Accuracy (1)

VDD = 3.3V

TA = −40°C to -25°C

–1.85

1.85

°C

TA = −25°C to –10°C

–1.65

1.65

°C

TA = −10°C to 80°C

–1.45

1.45

°C

TA = 80°C to 115°C

–1.65

1.65

°C

TA = 115°C to 125°C

-1.8

1.8

°C

VDD = 2.7V

to

VDD = 4.5V

TA = −40°C to -25°C

-2.1

2.1

°C

TA = −25°C to –10°C

–1.75

1.75

°C

TA = −10°C to 80°C

-1.65

1.65

°C

TA = 80°C to 115°C

-1.8

1.8

°C

TA = 115°C to 125°C

-2

2

°C

VDD > 4.5V

to

VDD = 5.5V

TA = −40°C to -25°C

-2.4

2.4

°C

TA = −25°C to -10°C

-2.2

2.2

°C

TA = −10°C to 80°C

–1.9

1.9

°C

TA = 80°C to 115°C

-1.8

1.8

°C

TA = 115°C to 125°C

-2

2

°C

Resolution

RES1 Bit = 0, RES0 Bit = 0

11

Bits

0.25

°C/LSB

RES1 Bit = 0, RES0 Bit = 1

12

Bits

0.125

°C/LSB

RES1 Bit = 1, RES0 Bit = 0

13

Bits

0.0625

°C/LSB

RES1 Bit = 1, RES0 Bit = 1

14

Bits

0.03125

°C/LSB

Temperature

Conversion Time (2)

RES1 Bit = 0, RES0 Bit = 0

10.1

ms

TA = TJ =TMIN to TMAX

14

RES1 Bit = 0, RES0 Bit = 1

20.2

ms

TA = TJ =TMIN to TMAX

28

RES1 Bit = 1, RES0 Bit = 0

40.4

ms

TA = TJ =TMIN to TMAX

56

RES1 Bit = 1, RES0 Bit = 1

80.8

ms

TA = TJ =TMIN to TMAX

112

Quiescent Current

Continuous Conversion Mode,

SMBus inactive

320

µA

TA = TJ =TMIN to TMAX

495

Shutdown, bus-idle timers on

120

µA

TA = TJ =TMIN to TMAX

175

Shutdown, bus-idle timers off

1.9

µA

TA = TJ =TMIN to TMAX

8

Power-On Reset

Threshold

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

0.9

V