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MAX31820PAR - 典型电路框图:
Maxim产品 - MAX31820PAR介绍
MAX31820PAR - 1-Wire Parasite-Power, Ambient Temperature Sensor

MAX31820PAR是Maxim美信半导体公司的一款1-Wire器件产品,MAX31820PAR是1-Wire Parasite-Power, Ambient Temperature Sensor,本站介绍了MAX31820PAR的封装应用图解、特点和优点、功能等,并给出了与MAX31820PAR相关的Maxim元器件型号供参考。

MAX31820PAR - 1-Wire Parasite-Power, Ambient Temperature Sensor - 1-Wire器件 - Parasite-Powered Digital Temperature Sensor in TO-92 Package Minimizes Wiring and is Ideal for Measuring Ambient Temperature - 美信半导体


The MAX31820PAR ambient temperature sensor provides 9-bit to 12-bit Celsius temperature measurements with ±0.5°C accuracy over a +10°C to +45°C temperature range. Over its entire -55°C to +125°C operating range, the device has ±2.0°C accuracy.

The device communicates over a 1-Wire® bus that, by definition, requires only one data line (and ground) for communication with a central microprocessor. In addition, the device derives power directly from the data line (“parasite power”), eliminating the need for an external power supply. Requiring so few pins enables the device to be placed in a 3-pin TO-92 package. The form factor of this package allows the device to be placed above the board and thus measure the ambient temperature of a system, as opposed to the board temperature that a surface-mount package would measure.

Each MAX31820PAR has a unique 64-bit serial code, which allows multiple MAX31820PAR devices to function on the same 1-Wire bus. Therefore, it is simple to use one microprocessor to control many devices distributed over a large area.

  • 以下关键特性由Maxim美信半导体提供:
  • Unique 1-Wire Interface Requires Only One Port Pin for Communication
  • Derives Power from Data Line (Parasite Power); No Local Power Supply Needed
  • Multidrop Capability Simplifies Distributed Temperature-Sensing Applications
  • Requires No External Components
  • Measures Temperatures from -55°C to +125°C (-67°F to +257°F)
  • ±0.5°C Accuracy from +10°C to +45°C
  • Thermometer Resolution is User-Selectable from 9 Bits to 12 Bits
  • Converts Temperature to 12-Bit Digital Word in 750ms (Max)
  • User-Definable Nonvolatile (NV) Alarm Settings
  • Alarm Search Command Identifies and Addresses Devices Whose Temperature is Outside Programmed Limits (Temperature Alarm Condition)
  • Available in 3-Pin TO-92 Package
  • Software Compatible with the DS1822-PAR and DS18B20-PAR
  • 热门应用
  • 任何对温度敏感的系统
  • 消费类产品
  • HVAC环境控制
  • 工业系统
  • 过程监测和控制系统
  • 建筑、设备或机房内部温度监测系统
  • 温度计
  • 温度监控器控制
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