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MCP9804

Microchip Technology
Part Number MCP9804
Manufacturer Microchip Technology
Description Accuracy Digital Temperature Sensor
Published Mar 1, 2010
Detailed Description www.DataSheet4U.com MCP9804 ±0.25°C Typ. Accuracy Digital Temperature Sensor Features • Accuracy: - ±0.25°C (typical) f...
Datasheet PDF File MCP9804 PDF File

MCP9804
MCP9804

Overview
www.
DataSheet4U.
com MCP9804 ±0.
25°C Typ.
Accuracy Digital Temperature Sensor Features • Accuracy: - ±0.
25°C (typical) from -40°C to +125°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 Description Microchip Technology Inc.
’s MCP9804 digital temperature sensor converts temperatures between -40°C and +125°C to a digital word with ±0.
25°C/±1°C (typical/maximum) accuracy.
The MCP9804 comes with user-programmable registers that provide flexibility temperature sensing applications.
The registers allow user-selectable settings 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 MCP9804 outputs an Alert signal.
The user has the option of setting the Alert output signal polarity as an active-low or active-high comparator output for thermostat operation, or as temperature Alert interrupt output for microprocessor-based systems.
The Alert output can also be configured as a Critical temperature output only.
This sensor has an industry standard 100 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 MCP9804 ideal for sophisticated multi-zone temperature-monitoring applications.
Typical Applications • • • • • • • • General Purpose Industrial Applications Industrial Freezers and Refrigerations Food Processing Personal Computers and Servers PC Peripherals Consumer Electronics Hand-held/Portable D...


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