Preliminary Technical Data
13-bit temperature-to-digital converter
−40°C to +125°C operating temperature range
0.03125°C temperature resolution
Shutdown current of 1 µA
Power dissipation of 0.631 mW at V
= 3.3 V
SPI- and DSP-compatible serial interface
Space-saving SOT-23 and MSOP packages
±2°C Accurate, MicroPower Digital
Temperature Sensor in 6-Lead SOT-23
FUNCTIONAL BLOCK DIAGRAM
Hard disk drives
Electronic test equipment
Figure 1. Functional Block Diagram
The ADT7302 is a complete temperature monitoring system
available in SOT-23 and MSOP packages. It contains a band gap
temperature sensor and a 13-bit ADC to monitor and digitize
the temperature reading to a resolution of 0.03125°C.
The ADT7302 has a flexible serial interface that allows easy
interfacing to most microcontrollers. The interface is compat-
ible with SPI®, QSPI™, and MICROWIRE™ protocols as well as
DSPs. The part features a standby mode that is controlled via
the serial interface.
The ADT7302’s wide supply voltage range, low supply current,
and SPI compatible interface make it ideal for a variety of
applications, including personal computers, office equipment,
automotive, and domestic appliances.
The ADT7302 has an on-chip temperature sensor that
allows an accurate measurement of the ambient tempera-
ture. The measurable temperature range is −40°C to
Supply voltage of 2.7 V to 5.5 V.
Space-saving 6-lead SOT-23 and 8-lead MSOP packages.
Temperature accuracy of ±2°C.
13-bit temperature reading to 0.03125°C resolution.
The ADT7302 features a shutdown mode that reduces the
power consumption to 4.88 µW with V
= 3.3 V @ 1 SPS.
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.
Specifications subject to change without notice. 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
© 2004 Analog Devices, Inc. All rights reserved.