MICROCHIP MCP9844T-BE/MNYAB

Digital temperature sensor converts temperature from -40°C to +125°C to a digital word. It provides an accuracy of ±0.2°C / ±1°C (typical/maximum) from +75°C to +95°C with an operating voltage of 1.7V to 3.6V. The digital temperature sensor comes with user-programmable registers that provide flexibility for temperature sensing applications. The registers allow user-selectable settings such as Shutdown or Low-Power modes, and the specification of temperature event boundaries. When the temperature changes beyond the specified event boundary limits, the sensor outputs an Alert signal at the Event pin. The user has the option of setting the temperature event output signal polarity as either an active-low or active-high comparator output for the thermostat operation, or as a temperature event interrupt output for microprocessor-based systems. This sensor has an industry standard I²C Fast Mode Plus compatible 1 MHz serial interface.

• 1MHz, 2-Wire I²C Interface
• User-Selectable Measurement Resolution:
  • +0.5°C, +0.25°C, +0.125°C, +0.0625°C
• User-Programmable Temperature Limits:
  • Temperature Window Limit
  • Critical Temperature Limit
• User-Programmable Temperature Alert Output
• Specified VDD Range: 1.7V to 3.6V
• Operating Current: 100μA (typical)
• Available Package: 8-Pin TDFN
• Temperature-to-Digital Converter (°C)
• Sensor Accuracy:
  • ±0.2°C / ±1°C (typ./max.) → +75°C to +95°C
  • ±0.5°C / ±2°C (typ./max.) → +40°C to +125°C
  • ±1°C / ±3°C (typ./max.) → -40°C to +125°C

• Temperature Sensing for Solid State Drive (SSD)
• General Purpose Temperature Datalog
• General Purpose
• Industrial Applications
• Industrial Freezers and Refrigerators
• Food Processing
• Personal Computers and Servers
• PC Peripherals
• Consumer Electronics
• Handheld/Portable Devices