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AD590JR

更新时间: 2024-01-02 14:18:22
品牌 Logo 应用领域
亚德诺 - ADI 传感器温度传感器
页数 文件大小 规格书
16页 629K
描述
Two-Twrminal IC Temperature Transducer

AD590JR 技术参数

生命周期:Obsolete包装说明:,
Reach Compliance Code:unknownHTS代码:8542.39.00.01
风险等级:5.84Base Number Matches:1

AD590JR 数据手册

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Two-Terminal IC  
Temperature Transducer  
AD590  
FLATPACK  
TO-52  
SOIC-8  
FEATURES  
Linear current output: 1 µA/K  
NC  
V+  
V–  
NC  
1
2
3
4
8
7
6
5
NC  
NC  
NC  
NC  
TOP VIEW  
(Not to Scale)  
Wide temperature range: −55°C to +150°C  
Probe compatible ceramic sensor package  
2-terminal device: voltage in/current out  
Laser trimmed to 0.5°C calibration accuracy (AD590M)  
Excellent linearity: 0.3°C over full range (AD590M)  
Wide power supply range: 4 V to 30 V  
Sensor isolation from case  
+
NC = NO CONNECT  
+
Low cost  
Figure 1. Pin Designations  
GENERAL DESCRIPTION  
receiving circuitry. The output characteristics also make the  
AD590 easy to multiplex: the current can be switched by a  
CMOS multiplexer or the supply voltage can be switched by a  
logic gate output.  
The AD590 is a 2-terminal integrated circuit temperature  
transducer that produces an output current proportional to  
absolute temperature. For supply voltages between 4 V and 30 V  
the device acts as a high-impedance, constant current regulator  
passing 1 µA/K. Laser trimming of the chips thin-film resistors  
is used to calibrate the device to 298.2 µA output at 298.2 K  
(25°C).  
PRODUCT HIGHLIGHTS  
1. The AD590 is a calibrated, 2-terminal temperature sensor  
requiring only a dc voltage supply (4 V to 30 V). Costly  
transmitters, filters, lead wire compensation, and  
linearization circuits are all unnecessary in applying the  
device.  
The AD590 should be used in any temperature-sensing  
application below 150°C in which conventional electrical  
temperature sensors are currently employed. The inherent low  
cost of a monolithic integrated circuit combined with the  
elimination of support circuitry makes the AD590 an attractive  
alternative for many temperature measurement situations.  
Linearization circuitry, precision voltage amplifiers, resistance  
measuring circuitry, and cold junction compensation are not  
needed in applying the AD590.  
2. State-of-the-art laser trimming at the wafer level in  
conjunction with extensive final testing ensures that  
AD590 units are easily interchangeable.  
3. Superior interface rejection occurs, because the output is a  
current rather than a voltage. In addition, power  
In addition to temperature measurement, applications include  
temperature compensation or correction of discrete  
components, biasing proportional to absolute temperature, flow  
rate measurement, level detection of fluids and anemometry.  
The AD590 is available in chip form, making it suitable for  
hybrid circuits and fast temperature measurements in protected  
environments.  
requirements are low (1.5 mWs @ 5 V @ 25°C). These  
features make the AD590 easy to apply as a remote sensor.  
4. The high output impedance (>10 MΩ) provides excellent  
rejection of supply voltage drift and ripple. For instance,  
changing the power supply from 5 V to 10 V results in only  
a 1 µA maximum current change, or 1°C equivalent error.  
5. The AD590 is electrically durable: it withstands a forward  
voltage of up to 44 V and a reverse voltage of 20 V.  
Therefore, supply irregularities or pin reversal does not  
damage the device.  
The AD590 is particularly useful in remote sensing applications.  
The device is insensitive to voltage drops over long lines due to  
its high impedance current output. Any well-insulated twisted  
pair is sufficient for operation at hundreds of feet from the  
Rev. C  
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.  
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.  
Tel: 781.329.4700  
Fax: 781.326.8703  
www.analog.com  
© 2003 Analog Devices, Inc. All rights reserved.  

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