TMP112_15 Datasheet, PDF (1/35 Pages) Texas Instruments – TMP112 High-Accuracy, Low-Power, Digital Temperature Sensor With SMBus and Two-Wire Serial Interface in SOT563

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TMP112
SBOS473E – MARCH 2009 – REVISED DECEMBER 2015
TMP112 High-Accuracy, Low-Power, Digital Temperature Sensor With SMBus and
Two-Wire Serial Interface in SOT563
1 Features
•1 SOT563 Package (1.6 mm × 1.6 mm) is a 68%
Smaller Footprint than SOT23
• Accuracy Without Calibration:
– 0.5°C (max) from 0°C to +65°C
– 1.0°C (max) from –40°C to +125°C
• Low Quiescent Current:
– 10-μA Active (max), 1-μA Shutdown (max)
• Supply Range: 1.4 V to 3.6 V
• Resolution: 12 Bits
• Digital Output: SMBus™, Two-Wire, and I²C
Interface Compatibility
• NIST Traceable
2 Applications
• Portable and Battery-Powered Applications
• Power-Supply Temperature Monitoring
• Computer Peripheral Thermal Protection
• Notebook Computers
• Battery Management
• Office Machines
• Thermostat Controls
• Electromechanical Device Temperatures
• General Temperature Measurements:
– Industrial Controls
– Test Equipment
– Medical Instrumentation
3 Description
The TMP112 device is a digital temperature sensor
ideal for NTC/PTC thermistor replacement where high
accuracy is required. The device offers an accuracy
of ±0.5°C without requiring calibration or external
component signal conditioning. Device temperature
sensors are highly linear and do not require complex
calculations or lookup tables to derive the
temperature. The calibrating for improved accuracy
feature allows users to calibrate for an accuracy as
good as ±0.17°C (see the Calibrating for Improved
Accuracy section). The on-chip 12-bit ADC offers
resolutions down to 0.0625°C.
The 1.6-mm × 1.6-mm SOT563 package is 68%
smaller footprint than an SOT23 package. The
TMP112 device features SMBus, two-wire and I²C
interface compatibility, and allows up to four devices
on one bus. The device also features an SMBus alert
function. The device is specified to operate over
supply voltages from 1.4 to 3.6 V with the maximum
quiescent current of 10 µA over the full operating
range.
The TMP112 is ideal for extended temperature
measurement in communication, computer,
consumer, environmental, industrial, and
instrumentation applications. The device is specified
for operation over a temperature range of –40°C to
+125°C.
The TMP112 production units are 100% tested
against sensors that are NIST-traceable and are
verified with equipment that are NIST-traceable
through ISO/IEC 17025 accredited calibrations.
Device Information⁽¹⁾
PART NUMBER
PACKAGE
BODY SIZE (NOM)
TMP112
SOT563 (6)
1.60 mm x 1.20 mm
(1) For all available packages, see the orderable addendum at
the end of the datasheet.
Block Diagram
Temperature
SCL
1
Diode
Temp.
Sensor
Control
Logic
6 _SDA
GND
2
DS
A/D
Converter
Serial
Interface
5
V+
ALERT
3
OSC
Config.
4
and Temp.
Register
ADD0
TMP112
1
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.