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TC12 Datasheet(PDF) 1 Page - TelCom Semiconductor, Inc

Part No. TC12
Description  LOW COST, ONE WIRE DIGITAL THERMOMETER WITH SHUTDOWN
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Maker  TELCOM [TelCom Semiconductor, Inc]
Homepage  http://www.telcom-semi.com
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TC12 Datasheet(HTML) 1 Page - TelCom Semiconductor, Inc

   
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TELCOM SEMICONDUCTOR, INC.
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PRELIMINARY INFORMATION
TC12
GENERAL DESCRIPTION
The TC12 is a monolithic temperature sensor that
outputs a pulse waveform whose duty cycle varies in direct
proportion to measured temperature. This output format is
easily converted to binary data using logic or the counter/
timer circuit on-board the system microcontroller. Typical
accuracy is
±1°C over the rated measurement range of
– 40
°C to +125°C. It operates from supply voltages as low
as 2.7V.
Unlike voltage output temperature sensors, the digital
output of the TC12 offers superior immunity to system noise
and does not require an A/D converter. Unlike two wire serial
temperature sensors, the TC12 communicates over a single
wire, and without complex serial protocol overhead.
LOW COST, ONE WIRE DIGITAL THERMOMETER WITH SHUTDOWN
PIN CONFIGURATION
FEATURES
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Single Wire Interface to Host Microcontroller
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High Precision .................
±1°C Accuracy (Typical)
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Wide Measurement Range .......... – 40
°C to +125°C
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No External Components Required
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Complimentary (TC12C) or Open Drain Outputs
(TC12N)
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Low Voltage Operation ........................ 2.7V to 5.5V
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Small Package ........................................ SOT-23A-5
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Low Cost
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Shutdown Input
APPLICATIONS
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Notebook Computers
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File Servers
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Desktop Computers
ORDERING INFORMATION
Part No.
Package
Temp. Range Output Config.
TC12CVCT
SOT-23A-5* – 40
°C to +125°C
Complimentary
TC12NVCT
SOT-23A-5* – 40
°C to +125°C
Open Drain
TC625EV
Evaluation Kit for the TC12 and TC625
NOTE: *SOT-23A-5 is equivalent to EIAJ (SC-74).
TC12-01 11/13/96
VDD
NC
DOUT
GND
SHDN
NOTE: *SOT-23A-5 is equivalent to EIAJ (SC-74)
SOT-23A-5*
(Top View)
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TC12CVCT
TC12NVCT
FUNCTIONAL BLOCK DIAGRAM
TYPICAL APPLICATION
TEMPERATURE
TO VOLTAGE
CONVERTER
DELTA SIGMA
MODULATOR
VDD
DOUT
SHDN
TC12
I/O
MICRO
CONTROLLER
MEASUREMENT
ZONE
2.7V to 5.5V
TC12
EVALUATION
KIT
AVAILABLE


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