标题: MCP9800/1/2/3 Data Sheet [打印本页] 作者: admin 时间: 2010-4-17 13:19 标题: MCP9800/1/2/3 Data Sheet MCP9800/1/2/3 Data Sheet
The MCP9800 is a digital temperature sensor capable of reading temperatures from -55°C to +125°C. Temperature data is measured from an integrated temperature sensor and converted to digital word with a user selectable 9 to 12-bit Sigma Delta Analog to Digital Converter. The MCP9800 notifies the host controller when the ambient temperature exceeds a user programmed set point. The ALERT output is programmable as either a simple comparator for thermostat operation or as a temperature event interrupt. Communication with the sensor is accomplished via a two-wire bus that is compatible with industry standard protocols. This permits reading the current temperature, programming the set point and hysteresis and configuring the device. Small physical size, low installed cost and ease of use make the MCP9800 an ideal choice for implementing sophisticated temperature system management schemes in a variety of applications.
Parameter Name Value
Typical Accuracy (°) 0.5
Max Input/ Supply Current (µA) 400
Max. Accuracy @ 25° (°) 1
Temp. Range (°C) -55 to +125
Operating Voltage Range (V) +2.7 to +5.5
Device Description Serial Output Temp Sensor
Features
2-wire I²C™/SMBus Compatible Interface
User Selectable 9- to 12-Bit Resolution
±1°C Accuracy from -10°C to +85°C
±2°C Accuracy from +85°C to +125°C
Low Operating Current: 220 µA (typical)
Shutdown Mode: 1 µA (max)
Power Saving One-Shot Temperature Conversion Measurement
Space Saving SOT-23 Package
