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AD7314

Description
low-voltage, 10-bit digital temperature sensor in 8-lead usoic
CategoryThe sensor   
File Size90KB,8 Pages
ManufacturerADI
Websitehttps://www.analog.com
Environmental Compliance  
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AD7314 Overview

low-voltage, 10-bit digital temperature sensor in 8-lead usoic

a
Low-Voltage, 10-Bit Digital Temperature
Sensor in 8-Lead SOIC
AD7314
FUNCTIONAL BLOCK DIAGRAM
BANDGAP
TEMPERATURE
SENSOR
10-BIT
ANALOG/DIGITAL
CONVERTER
ID
GND
TEMPERATURE
VALUE
REGISTER
V
DD
FEATURES
10-Bit Temperature-to-Digital Converter
–35 C to +85 C Operating Temperature Range
2 C Accuracy
SPI™- and DSP-Compatible Serial Interface
Shutdown Mode
Space-Saving SOIC Package
APPLICATIONS
Hard Disk Drives
Personal Computers
Electronic Test Equipment
Office Equipment
Domestic Appliances
Process Control
Mobile Phones
AD7314
SERIAL
BUS
INTERFACE
CE
SCLK
SDI
SDO
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
The AD7314 is a complete temperature monitoring system in
an 8-lead
µSOIC
package. It contains a bandgap temperature
sensor and 10-bit ADC to monitor and digitize the temperature
reading to a resolution of 0.25°C.
The AD7314 has a flexible serial interface that allows easy
interfacing to most microcontrollers. The interface is compat-
ible with SPI, QSPI and MICROWIRE™ protocol and is also
compatible with DSPs. The part features a standby mode that
is controlled via the serial interface.
The AD7314’s low supply current and SPI-compatible interface,
make it ideal for a variety of applications, including personal
computers, office equipment, and domestic appliances.
1. The AD7314 has an on-chip temperature sensor that allows
an accurate measurement of the ambient temperature. The
measurable temperature range is –35°C to +85°C, with a
±
2°C temperature accuracy.
2. Supply voltage of 2.65 V to 2.9 V.
3. Space-saving 8-lead
µSOIC
package.
4. 10-bit temperature reading to 0.25°C resolution.
5. The AD7314 features a standby mode that reduces the
current consumption to 1
µA
max.
SPI is a trademark of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corporation.
REV. 0
Information furnished by Analog Devices is believed to be accurate and
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2001

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