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Operating Ratings
Operating Temperature Range
Electrical Characteristics Temperature Range
LM89
Supply Voltage Range (V DD )
SNIS128C – AUGUST 2002 – REVISED MARCH 2013
0°C to +125°C
T MIN ≤ T A ≤ T MAX
0°C ≤ T A ≤ +85°C
+3.0V to +3.6V
Temperature-to-Digital Converter Characteristics
Unless otherwise noted, these specifications apply for V DD =+3.0Vdc to 3.6Vdc. Boldface limits apply for T A = T J =
T MIN ≤ T A ≤ T MAX ; all other limits T A = T J =+25°C, unle ss otherwise noted.
Parameter
Test Conditions
Typical (1)
Limits (2)
Unit
(Limit)
Temperature Error Using Local Diode
T A = +25°C to +125°C,
(3)
±1
±3
°C (max)
Temperature Error Using Remote Diode of 0.13
micron Pentium 4 with typical nonideality of 1.0021
and series R= 3.64 Ω . For other processors visit
www.ti.com to obtain the latest data. (T D is the
Remote Diode Junction Temperature)
T A = +30°C
T A = +30°C to
+50°C
T A = +0°C to +85°C
T D = +80°C
T D = +60°C to
+100°C
T D = +25°C to
±0.75
±1
±3
°C (max)
°C (max)
°C (max)
+125°C
Remote Diode Measurement Resolution
Local Diode Measurement Resolution
11
0.125
8
1
Bits
°C
Bits
°C
Conversion Time of All Temperatures at the Fastest
(4)
31.25
34.4
ms (max)
Setting
Quiescent Current
(5)
SMBus Inactive, 16Hz conversion
0.8
1.7
mA (max)
rate
D ? Source Voltage
Shutdown
315
0.7
μA
V
Diode Source Current
(D+ ? D ? )=+ 0.65V; high level
160
315
μA (max)
110
μA (min)
Low level
13
20
7
μA (max)
μA (min)
ALERT and T_CRIT_A Output Saturation Voltage
Power-On Reset Threshold
Local and Remote HIGH Default Temperature settings
Local and Remote LOW Default Temperature settings
Local T_CRIT Default Temperature Setting
Remote T_CRIT Default Temperature Setting
I OUT = 6.0 mA
Measure on V DD input, falling edge
(6)
(6)
(6)
(6)
+70
0
+85
+110
0.4
2.4
1.8
V (max)
V (max)
V (min)
°C
°C
°C
°C
(1)
(2)
(3)
(4)
(5)
(6)
Typical values are at T A = 25°C and represent most likely parametric norm.
Limits are ensured to AOQL (Average Outgoing Quality Level).
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 LM89 and the thermal resistance. See () for the thermal resistance to be used in the self-heating
calculation.
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).
Quiescent current will not increase substantially with an SMBus.
Default values set at power up.
Copyright ? 2002–2013, Texas Instruments Incorporated
Product Folder Links: LM89
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