AD590温度传感器详解与应用电路
需积分: 9 133 浏览量
更新于2024-09-20
收藏 99KB PDF 举报
"AD590是一款专用于温度测量的集成电路，其设计特点显著。这款温度传感器以其线性电流输出而闻名，每开尔文（oK）输出电流稳定在1微安（1 µA/oK）。它的工作范围广泛，适用于-55°C到150°C的温度环境，这使得它在许多现有的常规电气温度检测应用中具有竞争力。
AD590是一种双端器件，输入端为电压，输出端为电流，能够提供与绝对温度成比例的电流信号。当电源电压在+4V至+30V之间时，它作为一个高阻抗的恒流调节器，确保了在25°C时的输出电流为298.2 µA，这是通过激光 trimming技术校准其内部薄膜电阻实现的，以保证精度。
其设计的一个关键优势在于集成度高，无需额外的支撑电路，降低了成本，使得AD590成为众多温度测量应用场景的理想选择。它特别适合那些对成本敏感且需要简单电路设计的情况。然而，如果需要更高精度，可能还需要外接线性化电路、精密电压放大器或电阻测量电路，以及可能的冷端补偿电路来消除由于温度差异造成的误差。
AD590是一款性价比高的温度传感器，特别适用于工业控制、家用电器、航空航天等领域，其操作简单、可靠，并能在各种严苛的温度条件下稳定工作。对于任何寻求经济高效温度测量解决方案的工程师来说，理解和掌握AD590的工作原理和应用是至关重要的。"
12-3
August 1997
AD590
2-Wire, Current Output
Temperature Transducer
Features
• Linear Current Output . . . . . . . . . . . . . . . . . . . . 1µA/
o
K
• Wide Temperature Range . . . . . . . . . . . -55
o
C to 150
o
C
• Two-Terminal Device Voltage In/Current Out
• Wide Power Supply Range . . . . . . . . . . . . .+4V to +30V
• Sensor Isolation From Case
• Low Cost
Description
The AD590 is an integrated-circuit temperature transducer
which produces an output current proportional to absolute tem-
perature. The device acts as a high impedance constant current
regulator, passing 1µA/
o
K for supply voltages between +4V and
+30V. Laser trimming of the chip's thin film resistors is used to
calibrate the device to 298.2µA output at 298.2
o
K (25
o
C).
The AD590 should be used in any temperature-sensing
application between -55
o
C to 150
o
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 sit-
uations. Linearization circuitry, precision voltage amplifiers,
resistance measuring circuitry and cold junction compensa-
tion are not needed in applying the AD590. In the simplest
application, a resistor, a power source and any voltmeter can
be used to measure temperature.
In addition to temperature measurement, applications include
temperature compensation or correction of discrete
components, and biasing proportional to absolute temperature.
The AD590 is particularly useful in remote sensing applica-
tions. 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 hundreds of
feet from the 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.
Ordering Information
PART
NUMBER
NON-
LINEARITY
(
o
C)
TEMP. RANGE
(
o
C) PACKAGE
PKG.
NO.
AD590IH ±3.0 -55 to 150 3 Ld Metal Can
(TO-52)
T3.A
AD590JH ±1.5 -55 to 150 3 Ld Metal Can
(TO-52)
T3.A
Pinout
AD590
(METAL CAN)
Functional Diagram
CASE
-
1
2
3
+
Q1
Q2
Q3
Q4
Q5
Q6
Q7 Q8
Q9
Q10
Q11
Q12
R1 260Ω R2 1040Ω
C1 26pF
R3 5kΩ R4 11kΩ
R6 820Ω R5 146Ω
1
1
8
-
+
CHIP
SUBSTRATE
File Number 3171.1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
http://www.intersil.com or 407-727-9207
| Copyright © Intersil Corporation 1999
下载后可阅读完整内容，剩余9页未读，立即下载
2013-03-14 上传
2011-07-28 上传
2023-07-04 上传
2023-11-24 上传
2023-05-23 上传
2023-10-19 上传
2023-06-04 上传
2024-01-23 上传
2023-06-04 上传
zhang19861106
- 粉丝: 0
- 资源: 1
我的内容管理
展开
最新资源
- ASP.NET数据库高级操作：SQLHelper与数据源控件
- Windows98/2000驱动程序开发指南
- FreeMarker入门到精通教程
- 1800mm冷轧机板形控制性能仿真分析
- 经验模式分解：非平稳信号处理的新突破
- Spring框架3.0官方参考文档：依赖注入与核心模块解析
- 电阻器与电位器详解：类型、命名与应用
- Office技巧大揭秘：Word、Excel、PPT高效操作
- TCS3200D: 可编程色彩光频转换器解析
- 基于TCS230的精准便携式调色仪系统设计详解
- WiMAX与LTE：谁将引领移动宽带互联网?
- SAS-2.1规范草案：串行连接SCSI技术标准
- C#编程学习：手机电子书TXT版
- SQL全效操作指南：数据、控制与程序化
- 单片机复位电路设计与电源干扰处理
- CS5460A单相功率电能芯片：原理、应用与精度分析
