Microchip Technology Distributor

MCP9800/1/2/3 High-Accuracy Temperature Sensor Family


Microchip's MCP9800/1/2/3 family converts temperatures between -55°C and +125°C to a digital word


Microchip Technology's MCP9800/1/2/3 family of digital temperature sensors converts temperatures between -55°C and +125°C to a digital word. They provide an accuracy of ±1°C (maximum) from -10°C to +85°C.

The MCP9800/1/2/3 family offers user-programmable registers to provide flexibility for temperature-sensing applications. The register settings allow user-selectable, 9-bit to 12-bit temperature-measurement resolution, configuration of the power-saving Shutdown and One-shot (single conversion on command while in Shutdown) modes, and the specification of both temperature-alert output and hysteresis limits. When the temperature changes beyond the specified limits, the MCP9800/1/2/3 outputs an alert signal. The user has the option of setting the alert output signal polarity as an active-low or -high comparator output for thermostat operation, or as temperature-event interrupt output for microprocessor-based systems.

This sensor has an industry standard 2-wire, I2C/SMBus compatible serial interface, allowing up to eight devices to be controlled in a single serial bus. These features make the MCP9800/1/2/3 ideal for sophisticated multi-zone temperature-monitoring applications.
Microchip Technology's MCP9800

Features Applications
  • Temperature-to-digital converter
  • Accuracy with 12-bit resolution
    • ±0.5°C (typical) at +25°C
    • ±1°C (maximum) from -10°C to +85°C
    • ±2°C (maximum) from -10°C to +125°C
    • ±3°C (maximum) from -55°C to +125°C
  • User-selectable resolution: 9-12 bit
  • Operating voltage range: 2.7 V to 5.5 V
  • 2-wire interface: I2C/SMBus compatible
  • Operating current: 200 μA (typical)
  • Shutdown current: 1 μA (maximum)
  • Power-saving one-shot temperature measurement
  • Available packages: SOT-23-5, MSOP-8, and SOIC-8
  • Personal computers and servers
  • Hard disk drives and other PC peripherals
  • Entertainment systems
  • Office equipment
  • Data communication equipment
  • Mobile phones
  • General-purpose temperature monitoring

Silicon
Digi-Key P/N Manufacturer P/N Description  
MCP9800A0T-M/OTCT-ND MCP9800A0T-M/OT IC SENSOR THERMAL 2.7V SOT23-5 Datasheet
MCP9800A5T-M/OTCT-ND MCP9800A5T-M/OT IC SENSOR THERMAL 2.7V SOT23-5
MCP9801-M/SN-ND MCP9801-M/SN IC SENSOR THERMAL 2.7V 8SOIC
MCP9801-M/MS-ND MCP9801-M/MS IC SENSOR THERMAL 2.7V 8MSOP
MCP9802A5T-M/OTCT-ND MCP9802A5T-M/OT IC TEMP SNSR 12BIT 2WIRE SOT23-5
MCP9803-M/MS-ND MCP9803-M/MS IC TEMP SNSR 12BIT 2WIRE 8-MSOP
MCP9803-M/SN-ND MCP9803-M/SN IC TEMP SNSR 12BIT 2WIRE 8-SOIC
Available in Tape & Reel (TR-ND), Cut Tape (CT-ND), and custom Digi-Reel® (DKR-ND)

Demo Boards
Digi-Key P/N Manufacturer P/N Description  
MCP9800DM-DL2-ND MCP9800DM-DL2 BOARD DEMO 2 FOR MCP9800 Datasheet
MCP9800DM-TS1-ND MCP9800DM-TS1 DEMO BOARD TEMP SENSOR MCP9800
MCP9800DM-PCTL-ND MCP9800DM-PCTL BOARD DEMO FOR PICTAIL MCP9800
PKSERIAL-I2C1-ND PKSERIAL-I2C1 BOARD DEMO PICKIT SERIAL I2C Datasheet