Paul,
The LDC0851 has a switch type output that can be used for event counting. Here is an event counting reference design:
www.ti.com/.../TIDA-00851-LDC0851
Depending on the mechanical design of the pulley, it might be more reliable to read out the…
Hello All,
The construction shown above will not work. The LDC sensor needs to have an unobstructed view towards the rotating metal. If you have other metal between the sensor and the moving target, the LDC will be unable to sense this. If there is plastic…
This LDC0851 event counting TI design should help you get started:
www.ti.com/.../TIDA-00851-LDC0851
You can also order an LDC0851 EVM so that you can start learning how it works and prototyping. The EVM features a break-away design so that you can…
Hello Lorenzo,
If you have a metal target that is rotating a fixed distance from your PCB then you can use an LDC device such as the LDC1612 (slower speeds) or LDC1101 (fastest speeds) to detect the speed.
I would take a look at the following TI Designs…
Hi Robert,
Please also refer to a similar application note using the LDC0851 to detect the rotational speed of a fan: www.ti.com/.../TIDA-00851-LDC0851
Does this sound like what you're looking for?
Thanks,
Luke
Part Number: PGA900EVM
Tool/software: Code Composer Studio
Hi, I'm getting this strange error when I try to build my project in CCS. It is strange because until yesterday I had no problem building my project. So I am fairly certain it is not a problem…
Jeff,
Yes, there will be some calibration of some sort necessary to compensate for this drift if you expect significant error for your application.
The closest solution I have on hand is the TI Design TIDA_00851, which is a 4-20mA RTD solution using…
Other Parts Discussed in Thread: TIDA-00851 , PGA900 My program is based on TI RTD sensor (TIDA-00851_Firmware) - only minor changes. The temperature reading is working fine and the only problem is with UART communication.
RS232 signals (RX and TX) from…
Hello Wisam,
generally, the LDC can be used for gear tooth counting. A typical application for speed and direction would involve two LDC0851 switches. An example is here: http://www.ti.com/tool/TIDA-00851-LDC0851 .
However, as your system is proposed with…
Hello Mehmet,
I'm glad to hear that changing the capacitor solved your problem.
With regards to your additional question, "Basic Operation Mode" puts the LDC0851 into a true inductance comparator mode. When the ratio of sense inductance / reference…