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AD7314
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reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
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Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703     ?2003 Analog Devices, Inc. All rights reserved.
REV. A
Low Voltage, 10-Bit Digital Temperature
Sensor in 8-Lead MSOP
FUNCTIONAL BLOCK DIAGRAM
AD7314
BAND GAP
TEMPERATURE
SENSOR
SERIAL
BUS
INTERFACE
GND
ID
V
DD
CE
SCLK
SDI
SDO
10-BIT
ANALOG-TO-DIGITAL
CONVERTER
TEMPERATURE
VALUE
REGISTER
FEATURES
10-Bit Temperature-to-Digital Converter
35C to +85C Operating Temperature Range
2C Accuracy
SPI
?SPAN class="pst AD7314ARMZ-REEL7_2304762_6"> 
and DSP Compatible Serial Interface
Shutdown Mode
Space-Saving MSOP Package
APPLICATIONS
Hard Disk Drives
Personal Computers
Electronic Test Equipment
Office Equipment
Domestic Appliances
Process Control
Mobile Phones
GENERAL DESCRIPTION
The AD7314 is a complete temperature monitoring system in
an 8-lead MSOP package. It contains a band gap temperature
sensor and 10-bit ADC to monitor and digitize the temperature
reading to a resolution of 0.25C.
The AD7314 has a flexible serial interface that allows easy
interfacing to most microcontrollers. The interface is compat-
ible with SPI, QSPI", and MICROWIRE" protocols and is
also compatible with DSPs. The part features a standby mode
that is controlled via the serial interface.
The AD7314s low supply current and SPI compatible interface
make it ideal for a variety of applications, including personal
computers, office equipment, and domestic appliances.
PRODUCT HIGHLIGHTS
1. The AD7314 has an on-chip temperature sensor that allows
an accurate measurement of the ambient temperature. The
measurable temperature range is 35C to +85C, with a
?C temperature accuracy.
2. Supply voltage of 2.65 V to 5.5 V.
3. Space-saving 8-lead MSOP package.
4. 10-bit temperature reading to 0.25C resolution.
5. The AD7314 features a standby mode that reduces the
current consumption to 1 mA max.
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