10-Bit Digital Temperature Sensor
a
in 6-Lead SOT-23
AD7814
FEATURES FUNCTIONAL BLOCK DIAGRAM
10-Bit Temperature-to-Digital Converter
55C to +125C Operating Temperature Range
BAND GAP 10-BIT
2C Accuracy
TEMPERATURE ANALOG/DIGITAL
SPI- and DSP-Compatible Serial Interface SENSOR CONVERTER
Shutdown Mode
GND V
DD
Space-Saving SOT-23 Package
TEMPERATURE
AD7814 VALUE
APPLICATIONS REGISTER
Hard Disk Drives
Personal Computers
CS
SERIAL
Electronic Test Equipment
SCLK
BUS
DIN
Office Equipment
INTERFACE
DOUT
Domestic Appliances
Process Control
GENERAL DESCRIPTION PRODUCT HIGHLIGHTS
The AD7814 is a complete temperature monitoring system in a 1. The AD7814 has an on-chip temperature sensor that allows
SOT-23 package or 8-lead MSOP package. It contains a band an accurate measurement of the ambient temperature. The
gap temperature sensor and 10-bit ADC to monitor and digitize measurable temperature range is 55C to +125C, with a
the temperature reading to a resolution of 0.25C. 2C temperature accuracy.
The AD7814 has a flexible serial interface that allows easy inter- 2. Supply voltage of 2.7 V to 5.5 V
facing to most microcontrollers. The interface is compatible
3. Space-saving 6-lead SOT-23 package and 8-lead MSOP
with SPI , QSPI, and MICROWIRE protocol, and is also
package
compatible with DSPs. The part features a standby mode that is
4. 10-bit temperature reading to 0.25C resolution
controlled via the serial interface.
5. Standby mode that reduces the current consumption to 1 A
The AD7814s wide supply voltage range, low supply current,
and SPI-compatible interface make it ideal for a variety of
applications, including personal computers, office equipment,
and domestic appliances.
2
Purchase of licensed I C components of Analog Devices or one of its sublicensed
2
Associated Companies conveys a license for the purchaser under the Philips I C
2
Patent Rights to use these components in an I C system, provided that the system
2
conforms to the I C Standard Specification as defined by Philips.
REV. E
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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
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may result from its use. No license is granted by implication or otherwise
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Last Content Update: 02/23/2017
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AD7814: 10-Bit Digital Temperature Sensor in 6-Lead
SOT-23 Data Sheet
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