lamaPLC: MLX90614 infrared non-contact thermometer

The MLX90614 is an infrared thermometer for non-contact temperature measurements. Both the IR-sensitive thermopile detector chip and the signal conditioning ASIC are integrated in the same TO-39 can. Integrated into the MLX90614 are a low-noise amplifier, a 17-bit ADC, and a powerful DSP unit, thus achieving high accuracy and resolution for the thermometer.

The thermometer comes factory-calibrated with a digital SMBus output, providing full access to the measured temperature across the complete temperature range(s) with a resolution of 0.02°C.

The user can configure the digital output to use pulse-width modulation (PWM). By default, the 10-bit PWM continuously transmits the measured temperature in the range of -20 to 120°C, with an output resolution of 0.14°C.

MLX90614 Features

• Factory calibrated in a wide temperature range: -40 to 125°C for sensor temperature and -70 to 380°C for object temperature
• High accuracy of 0.5°C over a wide temperature range (0..+50 C for both Ta and To)
• Medical accuracy of 0.1°C in a limited temperature range available on request
• Measurement resolution of 0.02°C
• Single and dual zone versions
• SMBus-compatible digital interface for rapid temperature readings and building sensor networks
• Customizable PWM output for continuous reading
• Available in 3V and 5V versions
• Simple adaptation for 8 to 16V applications
• Power saving mode
• Different package options for applications and measurement versatility
• Automotive grade