LM89 datasheet(6/37 Pages) TI

6 / 37 page

LM89

SNIS128D – AUGUST 2002 – REVISED JUNE 2014

www.ti.com

Temperature-To-Digital Converter Characteristics (continued)

Unless otherwise noted, these specifications apply for VDD= +3.0Vdc to 3.6Vdc. Unless otherwise noted, MIN and MAX limits

apply for TA = TJ = TMIN to TMAX and typical limits TA= TJ= +25°C.

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

Quiescent Current (4)

SMBus Inactive, 16Hz conversion

0.8

1.7

rate

Shutdown

315

µA

− Source Voltage

0.7

Diode Source Current

(D+

− D−) = +0.65V; high level

110

160

315

µA

Low level

µA

ALERT and T_CRIT_A Output Saturation

IOUT = 6.0 mA

0.4

Voltage

Power-On Reset Threshold

Measure on VDD input, falling

1.8

2.4

edge

Local and Remote HIGH Default Temperature

(5)

°C

settings

Local and Remote LOW Default Temperature

(5)

°C

settings

Local T_CRIT Default Temperature Setting for

(5)

°C

LM89-1C and LM89C

Local T_CRIT Default Temperature Setting for

(5)

105

°C

LM89-1D

Remote T_CRIT Default Temperature Setting

(5)

110

°C

(4)

Limits are specific to TI's AOQL (Average Outgoing Quality Level).

(5)

Default values set at power up.

8.6 Digital DC Characteristics

Unless otherwise noted, these specifications apply for VDD = +3.0Vdc to 3.6Vdc. Unless otherwise noted, MIN and MAX limits

apply for TA = TJ = TMIN to TMAX and typical limits TA= TJ= +25°C.

SYMBOL

PARAMETER

TEST CONDITIONS

MIN(1)

TYP(2)

MAX(1)

UNIT

SMBData, SMBCLK INPUTS

VIN(1)

Logical “1” Input Voltage

2.1

VIN(0)

Logical “0”Input Voltage

0.8

VIN(HYST)

SMBData and SMBCLK Digital Input

400

Hysteresis

IIN(1)

Logical “1” Input Current

VIN = VDD

0.005

µA

IIN(0)

Logical “0” Input Current

VIN = 0 V

-10

−0.005

µA

CIN

Input Capacitance

ALL DIGITAL OUTPUTS

IOH

High Level Output Current

VOH = VDD

µA

VOL

SMBus Low Level Output Voltage

IOL = 4mA

0.4

IOL = 6mA

0.6

(1)

Limits are specific to TI's AOQL (Average Outgoing Quality Level).

(2)

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

8.7 Timing Requirements

Unless otherwise noted, these specifications apply for VDD = +3.0Vdc to +3.6Vdc. Unless otherwise noted, MIN and MAX

limits apply for TA = TJ = TMIN to TMAX and typical limits TA= TJ= +25°C.

PARAMETER

MIN(1)

TYP(2)

MAX(1)

UNIT

Conversion Time of All Temperatures at the Fastest Setting (3)

31.25

34.4

(1)

Limits are specific to TI's AOQL (Average Outgoing Quality Level).

(2)

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

(3)

This specification is provided only to indicate how often temperature data is updated. The LM89 can be read at any time without regard

to conversion state (and will yield last conversion result)

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