MAX6636UP9A+

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Temperature Sensors - Analog and Digital Output

The MAX6636UP9A+ is an analog-output temperature sensor used to measure temperature in both negative and positive temperature ranges. It provides an output voltage directly proportional to temperature from -40°C to +150°C(-40°F to +302°F). The MAX6636UP9A+ temperature sensor is an ultra-precision, highly accurate device with low g-sensitivity, making it ideal for medical, telecommunications, automotive, consumer and industrial applications.

Application Field

The MAX6636UP9A+ temperature sensor is used in applications that require precise temperature measurements. This can range from industrial processes, automotive applications, medical applications, consumer products, or telecommunications. Examples of the types of systems the MAX6636UP9A+ can be used in are:

• Agricultural systems
• Hospital equipment
• Telecommunication hardware
• Medical research instruments
• Thermal/environmental monitoring systems
• Automotive temperature control systems
• Factory automation systems

Working Principle

The MAX6636UP9A+ temperature sensor uses a digipot thermistor as the temperature sensing element. The thermistor is a resistor whose resistance changes with temperature changes. When the thermistor is connected to a voltage source, the temperature-dependent resistance will cause a change in voltage, and thus the temperature can be measured by monitoring the voltage. The MAX6636UP9A+ uses an on-chip linearization circuit to convert the thermistor voltage into a 0-10Vdc output voltage that can be used to measure the temperature.

The MAX6636UP9A+ temperature sensor also incorporates a digitally adjustable temperature offset for calibration purposes. The temperature offset is use to bring the actual temperature measurement in line with the expected temperature measurement. For example, if the actual temperature is measured as 0°C but the expected temperature is 25°C, then the temperature offset can be set to 25°C to account for the difference.

The MAX6636UP9A+ also features active low temperature alarms for high and low temperature warnings. The alarm may be set to a desired temperature, and will assert a logic low signal when the temperature reaches the set temperature. This feature is useful in applications where it is important to monitor the temperature and provide an alarm or signal in case of extreme temperature changes.

Conclusion

The MAX6636UP9A+ temperature sensor is an ultra-precision, highly accurate temperature sensor with low g-sensitivity. It is used in a variety of applications where precise temperature measurements are required. The on-chip linearization circuit converts the thermistor\'s voltage into 0-10Vdc output voltage and provides a digitally adjustable temperature offset for calibration purposes. The active low temperature alarms provide an alarm signal when the temperature reaches the preset limit, providing users with added safety and control.

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