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ADT7320UCPZ

更新时间： 2024-11-22 08:20:19
品牌 Logo 应用领域
亚德诺 - ADI 模拟IC传感器温度传感器信号电路
页数 文件大小 规格书
24页 266K
描述
±0.25°C Accurate, 16-Bit Digital SPI Temperature Sensor

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ADT7320UCPZ 数据手册

 浏览型号ADT7320UCPZ的Datasheet PDF文件第2页浏览型号ADT7320UCPZ的Datasheet PDF文件第3页浏览型号ADT7320UCPZ的Datasheet PDF文件第4页浏览型号ADT7320UCPZ的Datasheet PDF文件第5页浏览型号ADT7320UCPZ的Datasheet PDF文件第6页浏览型号ADT7320UCPZ的Datasheet PDF文件第7页 
± ±0.25°C AAcurateCꢀ16-Ba  
DBgBarlCSPICTtmpturacutCStnsou  
PutlBmBnruyCTtAhnBArlCDrarC  
 DT73.±  
FEATURES  
GENERAL DESCRIPTION  
Temperature accuracy 0.2ꢀ°C from −20°C to +10ꢀ°C  
13- or 16-bit user-selectable temperature-to-digital  
converter  
The ADT7320 is a high accuracy digital temperature sensor  
offering breakthrough performance over a wide industrial range,  
housed in an LFCSP package. It contains a band gap temperature  
reference and a 13-bit analog-to-digital converter (ADC) to  
monitor and digitize the temperature to a 0.0625°C resolution.  
The ADC resolution, by default, is set to 13 bits (0.0625°C).  
This can be changed to 16 bits (0.0078°C) by setting Bit 7 in the  
configuration register (Register Address 0x01).  
Low drift silicon temperature sensor  
No temperature calibration/correction required by user  
Power saving 1 sample per second (SPS) mode  
Fast first conversion on power-up of 6 ms  
SPI-compatible interface  
Operating temperature from −40°C to +1ꢀ0°C  
Operating voltage: 2.7 V to ꢀ.ꢀ V  
The ADT7320 is guaranteed to operate over supply voltages from  
2.7 V to 5.5 V. Operating at 3.3 V, the average supply current is  
typically 210 μA. The ADT7320 has a shutdown mode that  
powers down the device and offers a shutdown current of  
typically 2 μA. The ADT7320 is rated for operation over the  
−40°C to +150°C temperature range.  
Critical overtemperature indicator  
Programmable overtemperature/undertemperature interrupt  
Low power consumption: 700 μW typical at 3.3 V  
Shutdown mode for lower power: 7 μW typical at 3.3 V  
16-lead RoHS-compliant LFCSP package  
APPLICATIONS  
The CT pin is an open-drain output that becomes active when  
the temperature exceeds a programmable critical temperature  
limit. The default critical temperature limit is 147°C. The INT  
pin is also an open-drain output that becomes active when the  
temperature exceeds a programmable limit. The INT and CT  
pins can operate in either comparator or interrupt mode.  
RTD and thermistor replacement  
Medical equipment  
Cold junction compensation  
Industrial controls and test  
Food transportation and storage  
Environmental monitoring and HVAC  
FUNCTIONAL BLOCK DIAGRAM  
1
2
3
4
SCLK  
DOUT  
ADT7320  
INTERNAL  
OSCILLATOR  
INTERNAL  
REFERENCE  
DIN  
CS  
6
5
CT  
T
T
T
CRIT  
HIGH  
LOW  
Σ-Δ  
MODULATOR  
TEMPERATURE  
SENSOR  
TEMPERATURE  
VALUE  
CONFIGURATION  
AND STATUS  
REGISTERS  
INT  
REGISTER  
T
T
HYST  
REGISTER  
CRIT  
REGISTER  
FILTER  
LOGIC  
7
8
GND  
T
T
HIGH  
REGISTER  
LOW  
REGISTER  
V
DD  
Figure 1.  
Rev. PrA  
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 registeredtrademarks arethe property of their respective owners.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.461.3113  
www.analog.com  
©2010 Analog Devices, Inc. All rights reserved.  
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