ADT7301ARTZ-REEL7 Analog Devices Inc, ADT7301ARTZ-REEL7 Datasheet

IC SENSOR TEMP 13BIT DGT SOT23-6

ADT7301ARTZ-REEL7

Manufacturer Part Number
ADT7301ARTZ-REEL7
Description
IC SENSOR TEMP 13BIT DGT SOT23-6
Manufacturer
Analog Devices Inc
Datasheet

Specifications of ADT7301ARTZ-REEL7

Function
Temp Monitoring System (Sensor)
Topology
ADC, Register Bank
Sensor Type
Internal
Sensing Temperature
-40°C ~ 150°C
Output Type
MICROWIRE™, QSPI™, SPI™
Output Alarm
No
Output Fan
No
Voltage - Supply
2.7 V ~ 5.25 V
Operating Temperature
-40°C ~ 150°C
Mounting Type
Surface Mount
Package / Case
SOT-23-6
Ic Output Type
Digital
Sensing Accuracy Range
± 0.5°C
Supply Current
1.6mA
Supply Voltage Range
2.7V To 5.25V
Resolution (bits)
13bit
Sensor Case Style
SOT-23
No. Of Pins
6
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-ADT7301EB - BOARD EVALUATION FOR ADT7301
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant
Other names
ADT7301ARTZ-REEL7
ADT7301ARTZ-REEL7TR

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Price
Part Number:
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Quantity:
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Manufacturer:
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FEATURES
13-bit temperature-to-digital converter
−40°C to +150°C operating temperature range
±0.5°C typical 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
Cellular phones
Hard disk drives
Personal computers
Electronic test equipment
Office equipment
Domestic appliances
Process control
GENERAL DESCRIPTION
The ADT7301 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 ADT7301 has a flexible serial interface that allows easy
interfacing to most microcontrollers. The interface is compati-
ble with SPI
DSPs. The part features a standby mode that is controlled via
the serial interface. The ADT7301’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
ADT7301 is rated for operation over the −40°C to +150°C
temperature range. It is not recommended to operate the device
at temperatures above +125°C for greater than a total of 5%
(5,000 hours) of the lifetime of the device. Exposure beyond this
limit affects device reliability.
Rev. A
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
®
, QSPI
, and MICROWIRE
DD
= 3.3 V
protocols as well as
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
6.
7.
GND
On-chip temperature sensor that allows an accurate
measurement of the ambient temperature. The measurable
temperature range is −40°C to +150°C.
Supply voltage of 2.7 V to 5.25 V.
Space-saving 6-lead SOT-23 and 8-lead MSOP packages.
Typical temperature accuracy of ±0.5°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.
Digital Temperature Sensor
ADT7301
FUNCTIONAL BLOCK DIAGRAM
TEMPERATURE
BAND GAP
SENSOR
±1°C Accurate, 13-Bit,
©2005–2010 Analog Devices, Inc. All rights reserved.
DD
= 3.3 V @ 1 SPS.
INTERFACE
SERIAL
BUS
Figure 1.
ANALOG/DIGITAL
TEMPERATURE
CONVERTER
REGISTER
13-BIT
VALUE
ADT7301
www.analog.com
SCLK
DIN
DOUT
V
CS
DD

Related parts for ADT7301ARTZ-REEL7

ADT7301ARTZ-REEL7 Summary of contents

Page 1

FEATURES 13-bit temperature-to-digital converter −40°C to +150°C operating temperature range ±0.5°C typical accuracy 0.03125°C temperature resolution Shutdown current of 1 μA Power dissipation of 0.631 SPI- and DSP-compatible serial interface Shutdown mode Space-saving SOT-23 and MSOP ...

Page 2

ADT7301 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Product Highlights ........................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Timing Characteristics ................................................................ 4 Absolute Maximum Ratings ............................................................ 5 ESD ...

Page 3

SPECIFICATIONS 2 5.25 V, unless otherwise noted. All specifications are for −40°C to +150°C, unless otherwise noted. A MIN MAX DD Table 1. A Grade Specifications Parameter TEMPERATURE SENSOR AND ...

Page 4

ADT7301 TIMING CHARACTERISTICS Guaranteed by design and characterization, not production tested. All input signals are specified with t and timed from a voltage level of 1 Table 2. 1 Parameter Limit ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 3. Parameter V to GND DD Digital Input Voltage to GND Digital Output Voltage to GND 1 Operating Temperature Range Storage Temperature Range Junction Temperature 6-Lead SOT-23 (RJ-6) 2 Power Dissipation Thermal Impedance θ , Junction-to-Ambient ...

Page 6

ADT7301 PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS GND 1 6 DOUT ADT7301 2 5 DIN CS TOP VIEW (Not to Scale SCLK V DD Figure 4. SOT-23 Pin Configuration Table 4. Pin Function Descriptions SOT-23 MSOP Pin No. Pin ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 215 210 5.5V 205 200 195 190 3.3V 185 180 175 170 – TEMPERATURE (°C) Figure 6. Average Operating Supply Current vs. Temperature 205 200 195 190 185 180 175 2.5 3.0 3.5 4.0 4.5 ...

Page 8

ADT7301 5 4 UPPER TEMPERATURE ERROR LIMIT –1 –2 –3 LOWER TEMPERATURE ERROR LIMIT –4 –5 TEMPERATURE ( ° C) Figure 11. Temperature Accuracy of 40 ADT7301s @ 3 UPPER TEMPERATURE ERROR LIMIT ...

Page 9

THEORY OF OPERATION The ADT7301 is a 13-bit digital temperature sensor with a 14 bit that acts as a sign bit. The part houses an on-chip temperature sensor, a 13-bit A/D converter, a reference circuit, and serial interface logic functions ...

Page 10

ADT7301 TEMPERATURE VALUE REGISTER The temperature value register is a 14-bit read-only register that stores the temperature reading from the ADC in 13-bit twos complement format plus a sign bit. The MSB (DB13) is the sign bit. The ADC can ...

Page 11

SCLK 1 2 LEADING ZEROS DOUT DIN SERIAL INTERFACE The serial interface on the ADT7301 consists of four wires SCLK, DIN, and DOUT. The interface can be operated in 3-wire mode with DIN tied to ...

Page 12

ADT7301 APPLICATIONS INFORMATION MICROPROCESSOR INTERFACING The ADT7301 serial interface allows easy interface to most microcomputers and microprocessors. Figure 15 to Figure 18 show some typical interface circuits. The serial interface on the ADT7301 consists of four wires DIN, ...

Page 13

The following software program shows how to program a PIC16F873 to communicate with the ADT7301. The PIC16F873 is configured as an SPI master with the Port A.1 pin used Any microchip microcontroller can use this program by ...

Page 14

ADT7301 ADT7301-to-ADSP-21xx Interface Figure 18 shows an interface between the ADT7301 and the ADSP-21xx DSP processor. To ensure correct operation of the interface, the SPORT control register should be set up as follows: TFSW = RFSW = 1, alternate framing ...

Page 15

... MAX 0.05 MIN IDENTIFIER ORDERING GUIDE 1 Model Temperature Range ADT7301ARTZ-500RL7 −40°C to +150°C ADT7301ARTZ-REEL7 −40°C to +150°C ADT7301ARMZ −40°C to +150°C ADT7301ARMZ-REEL7 −40°C to +150°C EVAL-ADT7301EBZ RoHS Compliant Part. 2 Temperature accuracy is over a 0°C to 70°C temperature range. ...

Page 16

ADT7301 NOTES ©2005–2010 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02884–0–3/10(A) Rev Page ...

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