Maxim Integrated MAX31850/51 热电偶到数字转换器

Maxim Integrated MAX31850/MAX31851 单线热电偶到数字转换器在Mouser有售，它们是精确的热电偶到数字转换器集成电路，可简化设计并降低系统成本。这种单线式接口接线最少，能简化含多个热电偶的系统。每个器件有唯一的64位序列码，存储在内置ROM中。它们还有四个引脚可编程位，可唯一识别多达16个传感器在总线上的位置。MAX31850 / MAX31851可通过检测热电偶对地短路或V_CC。这些器件还能检测开路热电偶。它们应用范围广泛，包括工业精密热监控、医疗设备、太阳能设备、汽车等。

特性

Ease and speed system design
- Integrate all of the required functions of a discrete solution
  - ADC, precision amplifier, temperature sensor for cold-junction compensation, 1-wire communication interface
- Versions available for several thermocouple types
  - K, J, N, T, and E (MAX31850)
  - S and R (MAX31851)
- Highly accurate (±2.0°C) with no calibration required
Integrated solution lowers system cost over discrete solution
- One IC versus four to five discrete components reduces board space requirements
Simplify system fault management and troubleshooting
- Detects thermocouple shorts to GND or VCC
- Detects open thermocouple
1-Wire multidrop capability simplifies multisensor systems
- Each device has a unique 64-bit serial code stored in an on-board ROM
- 4 pin-programmable bits to uniquely identify up to 16 sensor locations on a bus
- Minimizes wiring requirements