Voltage of TIP&RING

[meisam_elec]

I am going to Measure the voltage of Telephone Line with microcontroller(AtoD).I mean the voltage between the TIP and RING.
I used ATMEGA32 microcontroller.Now it's impossible because the GND of the circuit is different from TIP&RING.
Who can help me by giving a solution??Thanks

 

[cyberblak]

Hi,

One solution would be to isolate your circuit's power supply. Then you could use either TIP or RING as a ground for the circuit.

cyberblak

 

[Iouri]

https://www.silabs.com/tgwWebApp/pu...cts/Wireline/Silicon_DAA/en/Si3056_matrix.htm
use si labs

Good lack

 

[yakroo]

thanks a lot
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