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MLX90320
Automotive Smart Sensor Interface IC
 Download MLX90320 Datasheet (PDF)
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MLX90320 General Description
The MLX90320 is a versatile, fully integrated and programmable sensor interface solution mainly for automotive applications. The device provides amplification, calibration and temperature compensation for virtually all kinds of resistive bridge type sensors including pressure transducers, strain gauges and position sensors.
Melexis’ "Programmable Through Connector" concept for high-volume implementations, enables programming in the production environment post assembly.
With very few additional components the MLX90320 will amplify an analog ratiometric input signal to achieve the desired output signal. This output signal can be corrected for sensitivity and offset errors due to temperature effects.
An operating temperature range of -40°C to 150°C as well as various implemented clamping detection and fault/diagnosis modes, over-voltage and reverse polarity protection make the MLX90320 the perfect fit for automotive applications.
An Evaluation Board for this new MLX90320 chip is available.
MLX90320 Features and Benefits
- Cost optimized device: single chip automotive sensor
- conditioning solution
- Dedicated for automotive applications with wide
- temperature range
- Second order gain and offset correction by programmable
- coefficient
- External or internal temperature sensor
- Over-voltage protection (no additional protection IC
- needed)
- Fault detection and programmable clamping levels
- Ratiometric output: 0 to 5V
- Single pin programming (through output pin)
- Fast response time (fully analog signal path)
- SSOP14 package or die form
MLX90320 Documentation
| DataSheet |
File Type |
Size |
Revision |
Date |
Action |
| MLX90320 DataSheet |
PDF |
730.3 KB |
rev 006 |
4/12/2012 |
|
| Product flyers |
File Type |
Size |
Revision |
Date |
Action |
| MLX90320 |
PDF |
620.4 KB |
05-2011 |
7/13/2011 |
|
MLX90320 Environmental Information
This text will be replaced
MLX90320 Frequently asked Questions
EVB90320
Question
I have an evaluation board for the MLX90320, but I don't have any datasheet or documents. What do I need to do?
Answer
The MLX90320 datasheet is available on our website. You can do search via the search box on the top left corner of each page on our website.
The Evaluation Board is delivered with a CD containing the software as well as the documentation.
About MLX90320
Question
I used the MLX90320 and have some troubles,please help me,thanks.
The MLX90320 can calibrate with 3 point of temperature,it contain low temperature,normal temperature and high temperature.
When I calibrated the points of normal temperature and low temperature,I have to find a
condition with high temperature to calibrate,but that place far away from the case of the low temperature.
So the EVB90320 will be lost the power supply.
When I arrive another place and Re-provide the power,the steps of the calibration be lost too.
But the data in the EEPROM was exist,just the steps were lost.(3 temperature point set off 9 steps,the step must be perform one by one)
My problem is that how to complete the calibration of the last temperature(last 3 steps) in the case of mentioned above.
Calibrating 90320
Question
I am building a test machine to automate the calibration process for MLX90320 pressure sensor, using the EVB90320 and the PSF sw libraries.
3 questions about 90320:
1) The PC has 4 serial ports, one of them connected to the EVB90320.
At startup, I use a certain code to connect the EVB.
This procedure performs scanning of all serial ports, transmitting 3 bytes to poll for an EVB connected.
I want to specify the serial channel connected to the EVB, in order to avoid that all the devices connected to other serial ports receive the 3 polling bytes.
How can I do this ?
If I connect the EVB to USB how could I specify to scan only USB channels and not serial ports?
2) When the function "ProgramDevice" returns, could I immediately switch off the circuit if the eeprom programming is still in progress?
3) Is it possible to connect more than one EVB to the PC (to serial port or USB)? If yes how can I address each EVB using the PSF functions?
Software Library for C#.NET
Answer
There is only one PSF90316 and this can be used in all windows programming tools.
First you will need to import the 90316 PSF active X DLL into your program. Please check the manual of C#.net for more information.
Next you need to connect the PTC-04 and creat a link. This can be done for example with the following instruction: ( example is for 90320EVB, but can be replaced by 90316)
Following C# code is an example of ScanStandalone usage:
> MLX90320EVBPSFModule.MLX90320EVBPSFDevice[] m_devs;
>
> MLX90320EVBPSFModule.MLX90320EVBPSFManager mgr = new
> MLX90320EVBPSFModule.MLX90320EVBPSFManager();
> MLXMPTCommon.ObjectCollection coll =
> (MLXMPTCommon.ObjectCollection)mgr.ScanStandalone(
> MLXMPTCommon.DeviceType.dtSerial, null);
> if (coll.Count <= 0)
> {
> MemoTextBox.AppendText("No devices found\n");
> return;
> }
> int ndev = coll.Count;
> m_devs = new
> MLX90320EVBPSFModule.MLX90320EVBPSFDevice[ndev];
>
> for (int i = 0; i < ndev; i++)
> {
> m_devs[i] =
> (MLX90320EVBPSFModule.MLX90320EVBPSFDevice)coll[i];
If this was succesfull, then you can readback eeprom , etc.
90320 vs, 90326
Question
What is the difference between the MLX90320 and the MLX90326?
Answer
the MLX90326 is more or less the same as the MLX90320, the major difference is related to the automotive requirements. The MLX90320 is foreseen for reverse and over voltage protections, which is not the case for the MLX90326.
Buy MLX90320
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