Thermo 16 Click is a Click board™ equipped with the sensor IC, which can measure temperature measurements between -40°C and +150°C so that the temperature measurement data can be processed by the host MCU. Thermo 16 Click provides an accuracy of ±1°C in the range from 0°C to 70°C. The sensor used on this Click board™ has a great combination of features that make it a perfect choice for any temperature measurement application: Analog signal output, low power consumption, compact sensor size, and more. The sensor itself requires almost no external components, which simplifies the design, reducing the cost and cutting the time to market.

Thermo 16 Click is supported by a mikroSDK compliant library, which includes functions that simplify software development.

The Click board™ is specially designed so it retains the specified characteristics of the sensor IC. Equipped with this sophisticated, accurate and simple to use sensor IC, it can be used for measuring and monitoring the temperature in a whole range of applications, such as the PC case and other internal components temperature monitoring, office equipment, automotive infotainment and entertainment systems thermal monitoring, general purpose thermal measurement, and similar digital thermal measurement applications, that require a precise thermal measurement.

The active temperature sensing component on Thermo 16 Click is the TMP235, a high accuracy temperature sensor IC Texas Instruments. The Click board™ itself has a reasonably small number of components because most of the measurement circuitry is already integrated on the TMP235 sensor. This sensor has many features that make it a perfect solution for small designs such as the Ambient 7 Click board™, and one of these features is certainly its high level of integration.

The TMP23X devices are a family of precision CMOS integrated-circuit linear analog temperature sensors with an output voltage proportional to temperature engineers can use in multiple analog temperature sensing applications. The TMP235 temperature sensor have an accuracy from 0°C to 70°C of ±1.25°C and provides a positive slope output of 10 mV/°C over the full –40°C to +150°C temperature range.

It is worth to mention that the TMP235 has extremely low power consumption - 9 μA (Typical). This makes Thermo 16 Click a perfect solution for the development of the IoT, wearable and portable applications, logging devices, industrial and health-related time metering applications, and all the other applications that require an accurate temperature measurement for their operation.

An analog signal from the thermal sensor, from Vout pin is routed to the AN pin of the mikroBUS™ socket. On the path from the sensor to the mikroBUS™ socket, R2 and C1 are forming the RC filter. R2 is 0 ohm by default, but the user can increase the resistance in order to find a perfect match for desired purpose. Note that higher resistance may help filter any noise in signal, but may also increase the sensor response time, so when tuning the RC filter, it is crucial to find the ideal balance between these two.

The TMP235 operates at power supply range from 2.3 V to 5.5 V. Thus, Thermo 16 Click has the power supply selection jumper onboard, named VCC SEL. That way, the user can switch between 3.3V and 5V for sensor power supply.

• Interface: Analog
• Compatibility: mikroBUS™
• Dimensions: 28.6 x 25.4mm
• Input Voltage: 3.3V or 5V
• Temperature Range (accuracy ±1˚C): Min. 0°C, Max. 70°C
• Temperature Range (accuracy ±2˚C): Min. -40°C, Max. +150°C
• Supply voltage: Min. 2.3V, Max. 5.5V
• Operating current: 17μA

• Schematic
• TMP235 Datasheet
• mikroSDK
• GitHub