LM99 datasheet(5/30 Pages) TI

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LM99

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SNIS129D – JANUARY 2003 – REVISED MARCH 2013

Temperature-to-Digital Converter Characteristics (continued)

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

Quiescent Current(5)

SMBus Inactive, 16 Hz conversion

0.8

1.7

mA (max)

rate

Shutdown

315

µA

− Source Voltage

0.7

Diode Source Current

(VD+ − VD−) = + 0.65 V; high level

160

315

µA (max)

110

µA (min)

Low level

µA (max)

µA (min)

ALERT and T_CRIT_A Output Saturation Voltage

IOUT = 6.0 mA

0.4

V (max)

Power-On-Reset (POR) Threshold

Measure on VDD input, falling edge

2.4

V (max)

1.8

V (min)

Local and Remote HIGH Default Temperature

See(6) Add 16°C for true Remote

+70

°C

settings

Temperature.

Local and Remote LOW Default Temperature

See(6) Add 16°C for true Remote

°C

settings

Temperature.

Local T_CRIT Default Temperature Setting

See(6)

+85

°C

Remote T_CRIT Default Temperature Setting

See(6) Add 16°C for 126°C true

+110

°C

Remote T_CRIT Setting

(5)

Quiescent current will not increase substantially with an SMBus.

(6)

Default values set at power up.

Logic Electrical Characteristics

DIGITAL DC CHARACTERISTICS

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

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

Symbol

Parameter

Conditions

Typical(1)

Limits(2)

Units

(Limit)

SMBData, SMBCLK INPUTS

VIN(1)

Logical “1” Input Voltage

2.1

V (min)

VIN(0)

Logical “0”Input Voltage

0.8

V (max)

VIN(HYST)

SMBData and SMBCLK Digital Input

400

Hysteresis

IIN(1)

Logical “1” Input Current

VIN = VDD

0.005

±10

µA (max)

IIN(0)

Logical “0” Input Current

VIN = 0 V

−0.005

±10

µA (max)

CIN

Input Capacitance

ALL DIGITAL OUTPUTS

IOH

High Level Output Current

VOH = VDD

µA (max)

VOL

SMBus Low Level Output Voltage

IOL = 4 mA

0.4

V (max)

IOL = 6 mA

0.6

(1)

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

(2)

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

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