ADT7301ARTZ Analog Devices, ADT7301ARTZ Datasheet

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ADT7301ARTZ

Manufacturer Part Number
ADT7301ARTZ
Description
Manufacturer
Analog Devices
Datasheet

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Preliminary Technical Data
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
APPLICATIONS
Medical equipment
Automotive:
Cell 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 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 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. Any exposure
beyond this limit will affect device reliability.
Rev. PrJ
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
DD
= 3.3 V
13-Bit, ±0.5°C Accurate, MicroPower Digital
Temperature Sensor in 6-Lead SOT-23
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
6.
GND
The ADT7301 has an on-chip temperature sensor that
allows an accurate measurement of the ambient tempera-
ture. The measurable temperature range is −40°C to
+150°C.
Supply voltage of 2.7 V to 5.5 V.
Space-saving 6-lead SOT-23 and 8-lead MSOP packages.
Temperature accuracy of ±0.5°C.
13-bit temperature reading to 0.03125°C resolution.
The ADT7301 features a shutdown mode that reduces the
power consumption to 4.88 µW with V
FUNCTIONAL BLOCK DIAGRAM
TEMPERATURE
ADT7301
BAND GAP
SENSOR
Figure 1. Functional Block Diagram
© 2004 Analog Devices, Inc. All rights reserved.
INTERFACE
SERIAL
BUS
ANALOG/DIGITAL
TEMPERATURE
CONVERTER
REGISTER
VALUE
13-BIT
DD
ADT7301
www.analog.com
= 3.3 V @ 1 SPS.
V
CS
SCLK
DIN
DOUT
DD

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ADT7301ARTZ Summary of contents

Page 1

... Rev. PrJ 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 ...

Page 2

ADT7301 TABLE OF CONTENTS Specifications.....................................................................................3 Timing Characteristics.................................................................4 Absolute Maximum Ratings............................................................5 ESD Caution..................................................................................5 Pin Configurations and Function Descriptions............................6 Typical Performance Characteristics..............................................7 Circuit Information ..........................................................................8 Converter Details..........................................................................8 REVISION HISTORY Revision PrE: Preliminary Version Preliminary Technical Data Temperature Value Register ........................................................ 8 Serial ...

Page 3

Preliminary Technical Data SPECIFICATIONS 2 5.5 V, unless otherwise noted. All specifications apply for –40°C to +150°C, unless otherwise stated A MIN MAX DD Table 1. A Grade Specifications Parameter ...

Page 4

ADT7301 TIMING CHARACTERISTICS Guaranteed by design and characterization, not production tested. All input signals are specified with (10 and timed from a voltage level of 1 ...

Page 5

Preliminary Technical Data ABSOLUTE MAXIMUM RATINGS Table 3. ADT7301 Stress Ratings 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 ...

Page 6

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

Page 7

Preliminary Technical Data TYPICAL PERFORMANCE CHARACTERISTICS –000 –000 TBD –000 –000 –000 –000 –000 –000 ALL CAPS (Initial caps) Figure 6. Temperature Accuracy @ 3.3 V and 5 V 215.0E-6 210.0E-6 5.5 V 205.0E-6 200.0E-6 195.0E-6 190.0E-6 3.3 V 185.0E-6 ...

Page 8

ADT7301 CIRCUIT INFORMATION 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 tempera- ture sensor, a 13-bit A/D converter, a reference circuit, and serial interface logic ...

Page 9

Preliminary Technical Data SCLK 1 2 DOUT LEADING ZEROS DIN SERIAL INTERFACE The serial interface on the ADT7301 consists of four wires: CS, SCLK, DIN, and DOUT. The interface can be operated in 2- wire mode with ...

Page 10

ADT7301 MICROPROCESSOR INTERFACING The ADT7301’ s serial interface allows for easy interface to most microcomputers and microprocessors. Figure 14 through Figure 17 show some typical interface circuits. The serial interface on the ADT7301 consists of four wires: CS, DIN, DOUT ...

Page 11

Preliminary Technical Data #include <16F873.h> #device adc=8 #use delay(clock=4000000) #fuses NOWDT,XT, PUT, NOPROTECT, BROWNOUT, LVP #BIT CKP = 0x14.4 #define CS PIN_A1 void main(){ int MSByte,LSByte; long int ADC_Temp_Code; float TempVal,ADC_Temp_Code_dec; setup_spi(spi_master); CKP = 1; do{ delay_ms(10); Output_low(CS); delay_us(10); MSByte ...

Page 12

ADT7301 ADT7301 to ADSP-21xx Interface Figure 17 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, ...

Page 13

Preliminary Technical Data OUTLINE DIMENSIONS 0.15 MAX 2.90 BSC 2.80 BSC 1.60 BSC PIN 1 0.95 BSC 1.90 1.30 BSC 1.15 0.90 1.45 MAX 0.22 0.08 0.50 SEATING 0.30 PLANE COMPLIANT TO JEDEC STANDARDS ...

Page 14

... ADT7301ARM-REEL7 −40°C to +150°C ADT7301ARM-REEL −40°C to +150°C 2 ADT7301ARTZ-500RL7 −40°C to +150°C 2 ADT7301ARTZ-REEL7 −40°C to +150°C 2 ADT7301ARTZ-REEL −40°C to +150°C 2 ADT7301ARMZ −40°C to +150°C 2 ADT7301ARMZ-REEL7 −40°C to +150°C 2 ADT7301ARMZ-REEL −40°C to +150°C 1 Temperature accuracy is over 0° ...

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