Datasheet

LM75A_4 © NXP B.V. 2007. All rights reserved.
Product data sheet Rev. 04 — 10 July 2007 15 of 24
NXP Semiconductors
LM75A
Digital temperature sensor and thermal watchdog
11. Static characteristics
[1] Typical values are at V
CC
= 3.3 V and T
amb
=25°C.
[2] “Conv” = device A-to-D conversion.
Table 17. Static characteristics
V
CC
= 2.8 V to 5.5 V; T
amb
= − 55 ° C to +125 ° C; unless otherwise specified.
Symbol Parameter Conditions Min Typ
[1]
Max Unit
T
ACC
temperature accuracy T
amb
= −25 °C to +100 °C −2-+2°C
T
amb
= −55 °C to +125 °C −3-+3°C
T
res
temperature resolution 11-bit digital temp data - 0.125 - °C
T
CONV(T)
temperature conversion
time
normal mode - 100 - ms
I
DD
supply current normal mode: I
2
C-bus inactive - 100 - µA
normal mode: I
2
C-bus active - - 1.0 mA
shutdown mode - 3.5 - µA
V
IH
HIGH-level input voltage digital pins (SCL, SDA, A2 to A0) 0.7 × V
CC
-V
CC
+ 0.3 V
V
IL
LOW-level input voltage digital pins −0.3 - 0.3 × V
CC
V
V
IHYS
input voltage hysteresis SCL and SDA pins - 300 - mV
A2, A1, A0 pins - 150 - mv
I
IH
HIGH-level input current digital pins; V
I
=V
CC
−1.0 - +1.0 µA
I
IL
LOW-level input current digital pins; V
I
= 0 V −1.0 - +1.0 µA
V
OL
LOW-level output voltage SDA and OS pins; I
OL
= 3 mA - - 0.4 V
I
OL
= 4 mA - - 0.8 V
I
LO
output leakage current SDA and OS pins; V
OH
=V
CC
--10µA
OSQ OS fault queue programmable 1 - 6 Conv
[2]
T
os
overtemperature
shutdown threshold
default value - 80 - °C
T
hyst
hysteresis temperature default value - 75 - °C
C
i
input capacitance digital pins - 20 - pF