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TMP04

Analog Devices
Part Number TMP04
Manufacturer Analog Devices
Description Serial Digital Output Thermometers
Published Apr 16, 2005
Detailed Description a Serial Digital Output Thermometers TMP03/TMP04 FEATURES Low Cost 3-Pin Package Modulated Serial Digital Output Prop...
Datasheet PDF File TMP04 PDF File

TMP04
TMP04

Overview
a Serial Digital Output Thermometers TMP03/TMP04 FEATURES Low Cost 3-Pin Package Modulated Serial Digital Output Proportional to Temperature ؎1.
5؇C Accuracy (typ) from –25؇C to +100؇C Specified –40؇C to +100؇C, Operation to 150؇C Power Consumption 6.
5 mW Max at 5 V Flexible Open-Collector Output on TMP03 CMOS/TTL-Compatible Output on TMP04 Low Voltage Operation (4.
5 V to 7 V) APPLICATIONS Isolated Sensors Environmental Control Systems Computer Thermal Monitoring Thermal Protection Industrial Process Control Power System Monitors GENERAL DESCRIPTION The TMP03/TMP04 are monolithic temperature detectors that generate a modulated serial digital output that varies in direct proportion to the temperature of the device.
An onboard sensor generates a voltage precisely proportional to absolute temperature which is compared to an internal voltage reference and input to a precision digital modulator.
The ratiometric encoding format of the serial digital output is independent of the clock drift errors common to most serial modulation techniques such as voltage-to-frequency converters.
Overall accuracy is ± 1.
5°C (typical) from –25°C to +100°C, with excellent transducer linearity.
The digital output of the TMP04 is CMOS/TTL compatible, and is easily interfaced to the serial inputs of most popular microprocessors.
The open-collector output of the TMP03 is capable of sinking 5 mA.
The TMP03 is best suited for systems requiring isolated circuits utilizing optocouplers or isolation transformers.
The TMP03 and TMP04 are specified for operation at supply voltages from 4.
5 V to 7 V.
Operating from 5 V, supply current (unloaded) is less than 1.
3 mA.
The TMP03/TMP04 are rated for operation over the –40°C to +100°C temperature range in the low cost TO-92, SO-8, and TSSOP-8 surface mount packages.
Operation extends to 150°C with reduced accuracy.
(continued on page 4) FUNCTIONAL BLOCK DIAGRAM TMP03/TMP04 TEMPERATURE SENSOR VPTAT DIGITAL MODULATOR VREF 123 DOUT V+ GND PACKAGE TYPE...


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