ADT7302_05 AD [Analog Devices], ADT7302_05 Datasheet

ADT7302_05

Manufacturer Part Number

ADT7302_05

Description

Manufacturer

AD [Analog Devices]

Datasheet

1.ADT7302_05.pdf (16 pages)

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FEATURES

13-bit temperature-to-digital converter

−40°C to +125°C operating temperature range

±2°C accuracy

0.03125°C temperature resolution

Shutdown current of 1 μA

Power dissipation of 0.631 mW at V

SPI- and DSP-compatible serial interface

Shutdown mode

Space-saving SOT-23 and MSOP packages

Compatible with AD7814

APPLICATIONS

Medical equipment

Automotive:

Cell phones

Hard disk drives

Personal computers

Electronic test equipment

Office equipment

Domestic appliances

Process control

GENERAL DESCRIPTION

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 compatible

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 PCs, office equipment, automotive, and

domestic appliances.

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.

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.

Environmental controls

Oil temperature

Hydraulic systems

= 3.3 V

±2°C Accurate, Micropower Digital

PRODUCT HIGHLIGHTS

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Tel: 781.329.4700

Fax: 781.461.3113

GND

On-chip temperature sensor that allows an accurate

measurement of the ambient temperature. The measurable

temperature range is −40°C to +125°C.

Supply voltage of 2.7 V to 5.25 V.

Space-saving 6-lead SOT-23 and 8-lead MSOP packages.

Maximum temperature accuracy of ±2°C.

13-bit temperature reading to 0.03125°C resolution.

Shutdown mode that reduces the power consumption to

4.88 μW with V

Compatible with AD7814.

FUNCTIONAL BLOCK DIAGRAM

ADT7302

TEMPERATURE

BAND GAP

SENSOR

Temperature Sensor

= 3.3 V at 1 SPS.

INTERFACE

SERIAL

BUS

Figure 1.

ANALOG/DIGITAL

TEMPERATURE

CONVERTER

VALUE

13-BIT

ADT7302

www.analog.com

SCLK

DIN

DOUT

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