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ADT75 Datasheet(PDF) 1 Page - Analog Devices

Part No. ADT75
Description  -1°C Accurate, 12-Bit Digital Temperature Sensor
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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ADT75 Datasheet(HTML) 1 Page - Analog Devices

 
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±1°C Accurate, 12-Bit Digital
Temperature Sensor
ADT75
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
© 2005 Analog Devices, Inc. All rights reserved.
FEATURES
12-bit temperature-to-digital converter
B grade accuracy ±1.0°C from 0°C to 70°C
A grade accuracy ±2.0°C from –25°C to +100°C
SMBus/I2C-compatible interface
Operation from −55°C to +125°C
Operation from 3 V to 5.5 V
Overtemperature indicator
Shutdown mode for low power consumption
Power consumption 79 μW typically at 3.3 V
Small, low cost 8-pin MSOP in Pb-Sn and Pb-free packages
Standard 8-pin SOIC Pb-free package
APPLICATIONS
Isolated sensors
Environmental control systems
Computer thermal monitoring
Thermal protection
Industrial process control
Power-system monitors
Hand-held applications
PRODUCT HIGHLIGHTS
1.
On-chip temperature sensor allows an accurate
measurement of the ambient temperature. The measurable
temperature range is −55°C to +125°C.
2.
Supply voltage is 3.0 V to 5.5 V.
3.
Space-saving, 8-lead MSOP and 8-lead SOIC.
4.
Temperature accuracy is ±1°C maximum.
5.
Temperature resolution is 0.0625°C.
6.
Shutdown mode reduces the current consumption to
3 μA typical.
7.
Connect up to eight ADT75s to a single SMBus/I2C bus.
FUNCTIONAL BLOCK DIAGRAM
CLK AND
TIMING
GENERATION
3
8
1
LPF
Σ-Δ
DIGITAL
COMPARATOR
OS/ALERT
VDD
8
GND
SDA
SCL
A2
A1
A0
TEMPERATURE
SENSOR
TEMPERATURE
SENSOR
REGISTER
CONFIGURATION
REGISTER
THYST SETPOINT
REGISTER
TOS SETPOINT
REGISTER
POINTER
REGISTER
SMBus/I2C INTERFACE
1-BIT
12-BIT
DECIMATOR
1-BIT
DAC
REFERENCE
+
2
7
5
6
Figure 1.


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