MLX90616 Datasheet, PDF (26/36 Pages) Melexis Microelectronic Systems – Infra Red Thermometer in TO-39 for high temperature thermometer guns

MLX90616ESF-HCA
Infra Red Thermometer in TO-39
for high temperature thermometer guns
9 Unique Features
 The MLX90616 is a non contact thermometer which can be calibrated by the user for an output
linearly dependent on the object temperature with high accuracy and high resolution.
 The high thermal stability of the MLX90616-HCA makes this part highly suited in applications where
secondary heat sources can heat up the sensor. These sensors also have a very short stabilization
time compared to other types of thermopile sensors, which is of importance if one needs an accurate
measurement in conditions where the ambient temperature can change quickly.
 The MLX90616 supports versatile customization to a very wide range of temperatures and refresh
rates.
 The user can program the internal object emissivity correction for objects with a low emissivity. An
embedded error checking and correction mechanism provides high memory reliability.
 The sensors are housed in an industry standard TO39.
 The low power consumption during operation and the low current draw during sleep mode make the
thermometer ideally suited for handheld mobile applications.
 The digital sensor interface can be either a power-up-and-measure PWM or an enhanced access
SMBus compatible protocol. Systems with more than 100 devices can be built with only two signal
lines.
 A build-in thermal relay function further extends the easy implementation of wide variety of
freezing/boiling prevention and alert systems, as well as thermostats (no MCU is needed).
10 Performance Graphs
10.1 Temperature accuracy of the MLX90616
All accuracy specifications apply under settled isothermal conditions only.
10.1.1 Ambient temperature accuracy
The factory calibrated Tambient accuracy is +/-0.5ºC, 0 to 50ºC.
It is +/-1ºC outside that range.
10.1.2 Object temperature accuracy, using the internal temperature calculation algorithm
The Tobject linearization calculation error is less than +/-0.2ºC or 0.2% of the measurement value, whichever
is bigger.
The Tobject accuracy after calibration by the customer can be better than +/-0.5ºC or 1.5% of measured
value, whichever is bigger. This depends on the calibration scheme and care taken during the calibration by
the customer. To achieve this result, Melexis recommends the use of specific object temperature calibration
points. Other reference temperatures can be used, but the accuracy has to be evaluated in that case.
Please consult Melexis for more information on the calibration procedure of the MLX90616.
10.1.3 Object temperature accuracy, with external calculation
The user has the option to use custom linearization algorithms using the raw IRdata information in the RAM
memory.
10.2 Sensitivity
The sensitivity of the MLX90616 is 100 LSbits, Tobject = 80ºC, Tambient = 25ºC.
3901090616
Rev 002
Page 26 of 36
Data Sheet
August 20, 2012