TMP1820 - Texas Instruments

TMP1820 Accurate Digital Temperature Sensor

The TMP1820 is 1-Wire®, high-accuracy, digitaloutput temperature sensor. The accuracy is as high as ±0.1°C across the –20°C to +85°C or ±0.4°C across the –55°C to +125°C temperature range. Each device incorporates a factory-programmed 64bit unique identification number used for addressing and allows NIST traceability. The 1-Wire® interface supports both a s.

Features

• Multi-drop shared bus for data communication features
  – 1-Wire interface
  – Standard and overdrive data rates modes (up to 90 kbps)
  – Legacy and short addressing
  – Cyclic redundancy check (CRC)
• Flexible power supply option: VDD (supply) powered or bus powered
  – 1.7 V to 5.5 V (OVD mode or bus powered)
  – 2.5 V to 5.5V (STD mode)
• High accuracy temperature sensor:
  – ±0.1°C (typical) from
  –20°C to +85°C
  – ±0.3°C (maximum) from
  –20°C to +85°C
  – ±0.4°C (maximum) from
  –55°C to +125°C
• 12-bit temperature resolution: 62.5 m°C (1 LSB)
• Low power
  – Active current: 85 µA (typical)
  – Shutdown curren.