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Low Power Digital Temperature Sensor with SMBus/Two-Wire Serial Interface in SOT563
Diode
Temp.
Sensor
Converter
Control
Logic
Temperature
SCL 1
SDA
GND 5
0.01 μF
1.4 V to 3.6 V
SDA
Supply Bypass
Capacitor
Supply Voltage
5 k
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Design
TMP102SBOS397F –AUGUST 2007–REVISED DECEMBER 2015
TMP102 Low-Power Digital Temperature Sensor With SMBus and Two-Wire Serial
Interfacein SOT563 Features 3 DescriptionThe TMP102 deviceisa digital temperature sensor SOT563 Package (1.6-mm× 1.6-mm)isa 68% idealfor NTC/PTC thermistor replacement where highSmaller Footprint than SOT-23 accuracyis required. The device offers an accuracy• Accuracy Without Calibration: of ±0.5°C without requiring calibration or external 2.0°C (max) from –25°Cto 85°C component signal conditioning. Device temperature
sensors are highly linear and do not require complex– 3.0°C (max) from –40°Cto 125°C calculations or lookup tables to derive the• Low Quiescent Current: temperature. The on-chip 12-bit ADC offers 10-μA Active (max) resolutions downto 0.0625°C. 1-μA Shutdown (max) The 1.6-mm× 1.6-mm SOT563 packageis 68% Supply Range: 1.4to 3.6V smaller footprint than an SOT-23 package. The
TMP102 device features SMBus™, two-wire andI2C• Resolution:12 Bits interface compatibility, and allows upto four devices• Digital Output: SMBus™, Two-Wire, andI2C on one bus. The device also featuresan SMBus alertInterface Compatibility function. The deviceis specified to operate over NIST Traceable supply voltages from 1.4to 3.6V with the maximum
quiescent currentof 10 µA over the full operating
range.
2 ApplicationsThe TMP102 deviceis idealfor extended temperature• Portable and Battery-Powered Applications
measurement in a variety of communication,• Power-supply Temperature Monitoring computer, consumer, environmental, industrial, and• Computer Peripheral Thermal Protection instrumentation applications. The deviceis specified Notebook Computers for operation overa temperature rangeof –40°Cto
125°C.• Battery Management Office Machines The TMP102 production units are 100% tested
against sensors that are NIST-traceable and are• Thermostat Controls verified with equipment that are NIST-traceable• Electromechanical Device Temperatures through ISO/IEC 17025 accredited calibrations.• General Temperature Measurements:
Device Information(1)– Industrial Controls– Test Equipment– Medical Instrumentations
(1) Forall available packages, see the orderable addendumat
the endofthe data sheet.
Simplified Schematic
Block Diagram
