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DT730±
FEATURES
FUNCTIONAL BLOCK DIAGRAM
13-bit temperature-to-digital converter
−40°C to +125°C operating temperature range
2°C accuracy
BAND GAP
TEMPERATURE
SENSOR
13-BIT
ANALOG/DIGITAL
CONVERTER
0.03125°C temperature resolution
Shutdown current of 1 µA
Power dissipation of 0.631 mW at VDD = 3.3 V
SPI- and DSP-compatible serial interface
Shutdown mode
GND
V
DD
TEMPERATURE
VALUE
REGISTER
ADT7302
CS
SERIAL
BUS
INTERFACE
SCLK
DIN
Space-saving SOT-23 and MSOP packages
DOUT
APPLICATIONS
Medical equipment
Automotive:
Figure 1. Functional Block Diagram
Environmental controls
Oil temperature
Hydraulic systems
Cell phones
Hard disk drives
Personal computers
Electronic test equipment
Office equipment
Domestic appliances
Process control
GENERAL DESCRIPTION
PRODUCT HIGHLIGHTS
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.
1. 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
+125°C.
2. Supply voltage of 2.7 V to 5.5 V.
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.
3. Space-saving 6-lead SOT-23 and 8-lead MSOP packages.
4. Temperature accuracy of 2°C.
5. 13-bit temperature reading to 0.03125°C resolution.
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.
6. The ADT7302 features a shutdown mode that reduces the
power consumption to 4.88 µW with VDD = 3.3 V @ 1 SPS.
Rev. PrE
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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
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