lm95172qa2 National Semiconductor Corporation, lm95172qa2 Datasheet - Page 7

• Manufacturer Part Number: lm95172qa2
• Description: 13-bit To 16-bit Digital Temperature Sensor With 3-wire Interface
• Manufacturer: National Semiconductor Corporation

30035706
FIGURE 4. Data Input Timing Diagram
30035709
FIGURE 5. t
Timing Definition Diagram
BUF
30035710
FIGURE 6. t
Timing Definition Diagram
TA
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. DC and AC electrical specifications do not apply when operating
the device beyond its rated operating conditions.
Note 2: When the input voltage (V
) at any pad exceeds the power supplies (V
< GND or V
> [V
or V
]) the current at that pad should be limited to
I
I
I
DD ANALOG
DD IO
5 mA.
Note 3: Invalid. The LM95172QA2 MDA will return a "0" if read. If written to, no valid register will be modified.
Note 4: Human body model, 100 pF discharged through a 1.5 kΩ resistor. Machine model, 200 pF discharged directly into each pad. The Charged Device Model
(CDM) is a specified circuit characterizing an ESD event that occurs when a device acquires charge through some triboelectric (frictional) or electrostatic induction
processes and then abruptly touches a grounded object or surface.
Note 5: The LM95172QA2 MDA is specified for continuous operation at 150°C with occasional short-term excursions to 175°C.
Note 6: The LM95172QA2 MDA will operate properly over the V
= 3.0V to 5.5V and V
= 3.0V to 5.5V supply voltage ranges.
DD ANALOG
DD IO
Note 7: The voltage on the Chip Select (CS) pad must be less than or equal to (V
+0.2) at all times. It is recommended that V
should be fully powered-
DD IO
DD IO
up before CS is allowed to go high.
Note 8: Total Quiescent Current includes the sum of the currents into the V
and the V
pads.
DD ANALOG
DD IO
Note 9: Typicals are at T
= 25°C and represent most likely parametric norm.
A
Note 10: Limits are guaranteed to National's AOQL (Average Outgoing Quality Level).
Note 11: This specification is provided only to indicate how often temperature data is updated. The LM95172QA2 MDA can be read at any time without regard
to conversion state (and will yield last conversion result). A conversion in progress will not be interrupted. The output shift register will be updated at the completion
of the read and a new conversion restarted.
Note 12: For best accuracy, minimize output loading. Higher sink currents can affect sensor accuracy with internal heating.
Note 13: Guaranteed by design.
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