LM95231 datasheet(5/20 Pages) NSC

5 / 20 page

Temperature-to-Digital Converter Characteristics (Continued)

Unless otherwise noted, these specifications apply for V

DD=+3.0Vdc to 3.6Vdc. Boldface limits apply for TA =TJ =

MIN

≤T

MAX; all other limits TA=TJ=+25˚C, unless otherwise noted. TJ is the junction temperature of the LM95231. TD is the

junction temperature of the remote thermal diode.

Parameter

Conditions

Typical

LM95231

BIMM

LM95231

CIMM

Units

(Note 6)

Limits

(Note 7)

Limits

(Note 7)

(Limit)

Diode Source Current

D+ −VD−) = + 0.65V;

high-level

176

300

µA (max)

100

µA (min)

Low-level

µA

Power-On Reset Threshold

Measure on V

DD input, falling

edge

2.7

1.8

2.7

1.8

V (max)

V (min)

Logic Electrical Characteristics

Digital DC Characteristics

Unless otherwise noted, these specifications apply for V

DD=+3.0 to 3.6 Vdc. Boldface limits apply for TA =TJ =TMIN to

MAX; all other limits TA=TJ=+25˚C, unless otherwise noted.

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 6)

(Note 7)

(Limit)

SMBDAT, SMBCLK INPUTS

IN(1)

Logical “1” Input Voltage

2.1

V (min)

IN(0)

Logical “0”Input Voltage

0.8

V (max)

IN(HYST)

SMBDAT and SMBCLK Digital Input

Hysteresis

400

IN(1)

Logical “1” Input Current

IN =VDD

0.005

±10

µA (max)

IN(0)

Logical “0” Input Current

IN = 0 V

−0.005

±10

µA (max)

Input Capacitance

SMBDAT OUTPUT

High Level Output Current

OH =VDD

µA (max)

SMBus Low Level Output Voltage

OL = 4mA

OL = 6mA

0.4

0.6

V (max)

SMBus Digital Switching Characteristics

Unless otherwise noted, these specifications apply for V

DD=+3.0 Vdc to +3.6 Vdc, CL (load capacitance) on output lines = 80

pF. Boldface limits apply for T

A =TJ =TMIN to TMAX; all other limits TA =TJ = +25˚C, unless otherwise noted. The switching

characteristics of the LM95231 fully meet or exceed the published specifications of the SMBus version 2.0. The following pa-

rameters are the timing relationships between SMBCLK and SMBDAT signals related to the LM95231. They adhere to but are

not necessarily the SMBus bus specifications.

Symbol

Parameter

Conditions

Typical

Limits

Units

(Note 6)

(Note 7)

(Limit)

SMB

SMBus Clock Frequency

100

kHz (max)

kHz (min)

LOW

SMBus Clock Low Time

from V

IN(0)max to VIN(0)max

4.7

µs (min)

ms (max)

HIGH

SMBus Clock High Time

from V

IN(1)min to VIN(1)min

4.0

µs (min)

R,SMB

SMBus Rise Time

(Note 12)

µs (max)

F,SMB

SMBus Fall Time

(Note 13)

0.3

µs (max)

Output Fall Time

L = 400pF,

O = 3mA, (Note 13)

250

ns (max)

TIMEOUT

SMBDAT and SMBCLK Time Low for Reset of

Serial Interface (Note 14)

ms (min)

ms (max)

SU;DAT

Data In Setup Time to SMBCLK High

250

ns (min)

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