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MLX90314
High Gain Programmable Versatile Sensor Interface
 Download MLX90314 Datasheet (PDF)
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MLX90314 General Description
The MLX90314 is a dedicated microcontroller which performs signal conditioning for sensors wired in bridge or differential configurations.
Sensors that can be used include thermistors, strain gauges, load cells, pressure sensors, accelerometers, etc. The signal conditioning includes gain adjustment, offset control, high order temperature and linearity compensation. Compensation values are stored in EEPROM and are re-programmable. Programming is accomplished by using a PC, with an interface circuit (level shifting and glue logic), and provided software.
The application circuits can provide an output of an absolute voltage, relative voltage, or current. The output can be range limited with defined outputs when the signal is beyond the programmed limits. Other features include alarm outputs and level steering.
The robust electrical design allows the MLX90314 to be used where most signal conditioning and sensor interface circuits cannot be used. Voltage regulation control is provided for absolute voltage and current modes (external FET required).
The standard package is a plastic SO16W. The device is static-sensitive and requires ESD precautions.
For further information, please contact:
Laurent Otte, lot@melexis.com
MLX90314 Features and Benefits
- Microprocessor-controlled signal conditioning for bridge-type sensors
- Suited for low-cost sensors: reduction of non-linearity by programmable coefficients External or internal temperature sensor for compensating temperature errors
- Versatile output signal ranges: 4, 5, 10, or 11VDC; 4 to 20 mA loop
- Mass calibration easy with 2400 or 9600 baud UART
- Power supply from 6 to 35VDC
MLX90314 Tools
| Software & Tools |
File Type |
Size |
Revision |
Date |
Action |
| SW90308_90314 |
EXE |
220.0 KB |
2 |
6/5/2008 |
|
MLX90314 Environmental Information
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MLX90314 Frequently asked Questions
MLX90308
Answer
First you need to determine what supply voltage you expect for your load cell. With the MLX90308 you will supply your cell with 5V and it will take too much current with a 350ohm cell. The MLX90314 is the same as the MLX90308 besides that it has a much higher gain (2625mA/V max).
MLX90308 9n Digital Current Mode
Answer
We have a dll available for both MLX90308 and MLX90314 which you can use to build up your own calibration algorithm. By using this you can significantly decrease the calibration time.
90323 vs 90314
Question
What is the difference between the MLX90323 and the MLX90314?
Answer
The MLX90323 is designed to work in industrial applications. The temperature range is smaller then the one for the MLX90314 (-40 to 125).
Furthermore the MLX90323 has only a current output while the MLX90314 can also be programmed with a voltage output.
Buy MLX90314
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