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TIC12400-Q1: TIC12400-Q used for analog voltage detection

Part Number: TIC12400-Q1

Dear Sir,

 

Now TIC12400-Q1 is used in our BCM for input signals detection, but we find a problem for analog voltage detection.

 

We can’t close Wetting Current, it means we can’t set the Wetting Current to 0 mA, then due to this Wetting Current effect, MSDI can not detect an analog voltage to an exact value, we have try to configure the register one by one, but we can’t close the Wetting Current.

 

So, do you have any reference design or application note for TIC12400-Q1 analog voltage detection, e.g. some pressure sensor output is an analog voltage in vehicle application.

 

Many thanks!

BR.

Zuo Chenggang

E-mail:zuocg@senptec.com

  • Hi Zuo,

     The default setting of the TIC12400-Q1 is 0mA of wetting current, so you shouldn't have to program the registers to do anything because this is the default setting. What are you writing to the registers? Wetting current shouldn't be on unless you turn it on. 

    Unfortunately all the app notes about this part are concerning switch detection, which based on your post I don't think you are doing. If you could share more details of the application that you are trying to use this part for that would be great and would help me also understand the issue that you are facing. 

    Best,

    Parker Dodson