Power Electronics

2-Wire Digital Temperature Sensor

Seiko Instruments S-5851A Series is a 2-wire serial I/O digital temperature sensor. This IC measures temperature with resolution of 0.0625°C without the need for external components. The S-5851A is ideal for wide-ranging temperature measurements in various applications. The S-5851A integrates a temperature sensor, reference voltage generation circuit, a delta-sigma type A/D converter and interface bus.


  • 2.7 V operation @ VDD (min.)
  • 45 µA (typ.) consumption (+25°C)
  • 1 µA typ. (+25°C at shutdown)
  • ±2.0°C (max.) accuracy ?25°C to +85°C
  • ±3.0°C (max.) accuracy ?40°C to +125°C
  • Temperature resolution: 0.0625°C
  • Digital output: 2-wire serial interface
  • 400 kHz maximum operating frequency
  • Low power supply voltage detection circuit
  • Lead-free, Sn 100%, halogen-free
  • SNT-6A and SOT-23-6 packages


  • Temperature monitor for power supply
  • Temperature monitor for battery
  • Any application needing temperature monitoring
TAGS: Products
Hide comments


  • Allowed HTML tags: <em> <strong> <blockquote> <br> <p>

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.