Microchip Technology Inc.’s MCP9808T-E/MS digital temperature sensor converts temperatures between -20°C and +100°C to a digital word with ±0.25°C/±0.5°C (typical/maximum) accuracy.
The MCP9808T-E/MS comes with user-programmable registers that provide flexibility for temperature sensing applications. The registers allow user-selectablesettings such as Shutdown or Low-Power modes and the specification of temperature Alert window limits and critical output limits. When the temperature changes beyond the specified boundary limits, the MCP9808T-E/MS outputs an Alert signal. The user has the option of setting the Alert output signal polarity as an active-low or activehigh comparator output for thermostat operation, or as a temperature Alert interrupt output for microprocessorbased systems. The Alert output can also be configured as a critical temperature output only.
This sensor has an industry standard 400 kHz, 2-wire, SMBus/I2C compatible serial interface, allowing up to eight or sixteen sensors to be controlled with a single serial bus (see Table 3-2 for available Address codes). These features make the MCP9808T-E/MS ideal for sophisticated, multi-zone, temperature-monitoring applications.
Features
• Accuracy:
- ±0.25 (typical) from -40°C to +125°C
- ±0.5°C (maximum) from -20°C to 100°C
- ±1°C (maximum) from -40°C to +125°C
• 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
• Operating Voltage Range: 2.7V to 5.5V
• Operating Current: 200 µA (typical)
• Shutdown Current: 0.1 µA (typical)
• 2-wire Interface: I2C™/SMBus Compatible
• Available Packages: 2x3 DFN-8, MSOP-8
Typical Applications
• General Purpose
• Industrial Applications
• Industrial Freezers and Refrigerators
• Food Processing
• Personal Computers and Servers
• PC Peripherals
• Consumer Electronics
• Handheld/Portable Devices
Feature
- Accuracy:
- ±0.25°C (typical) from -40°C to +125°C
- ±0.5°C (maximum) from -20°C to +100°C
- 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
- Operating Voltage Range: 2.7V to 5.5V
- Operating Current: 200 µA (typical)
- Shutdown Current: 0.1 µA (typical)
- 2-wire Interface: I2C/SMBus Compatible
- Available Packages: 2x3 DFN-8, MSOP-8
- AEC-Q100 Qualified Grade 1
(Picture: Pinout)
