MCP9700T-E/TT Sensors, Transducers

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The MCP9700T-E/TT is ideal for applications that require an analog or digital temperature sensor. It is specifically designed for applications where temperature readings need to be accurate, reliable, and flexible. The device is capable of measuring temperature over a wide range of temperatures, from -55°C to 150°C (-67°F to 302°F). The temperature reading can be contact or remote, so it can be used in industrial, medical, consumer, and environmental monitoring applications.

Design and Features

The MCP9700T-E/TT is a complete temperature sensing system, integrated into a 4-pin, SOT-23 package. It is an analog output temperature sensor, reading a range of -55°C to 150°C with 0.5°C resolution. The default output type is an analog voltage, referenced to the supply voltage (V S ). The device also includes a digital output, with an I2C interface. The digital output is compatible with I2C and SMBus protocols, and supports full-scale read out from -55°C to 150°C.

The device is designed to minimize power consumption and maximize accuracy through the use of a 2-point linear conversion between temperature and output voltage. It uses a single 2.5V power supply (V S ) and current consumption is typically 4uA (at 25°C). The design also includes an " Enhanced Accuracy " feature, which allows the device to have precision accuracy of ±2°C (at 25°C) and ±5°C (at full temperature range).

Working Principle

The MCP9700T-E/TT functions by sensing temperature changes. It does this by measuring the voltage drop across a thermistor, which is an electrical device used to measure temperature. The thermistor works by having its resistance change according to changes in temperature. When voltage is applied to the thermistor, the voltage drop across the thermistor is proportional to the temperature. The voltage drop is then read by an internal ADC, which is converted to an analog voltage or digital value.

Conclusion

The MCP9700T-E/TT is an ideal temperature sensing solution for applications that require accuracy, reliability, and flexibility. Its integrated 2-point linear conversion, digital and analog outputs, low-power operation, and enhanced accuracy features make it suitable for a variety of applications.

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