Digital Coaxial to 3.5mm

[cschun86]

I have an android TV box with 3.5mm SPDIF output (3.5mm phono jack type) not Toslink.
I am thinking to hook that one up to my Topping E50 DAC coaxial port.
I have some RG59 75ohm coaxial cable lying around and I am thinking to build myself a digital coaxial cable (RCA to 3.5mm jack)

Is the digital coaxial cable is a mono connection? Tip to tip and shield to shield only?
I can't seem to find much info online and some cables in the market use 3.5mm TRS and even TRRS connector confused me.

As long as I run this cable with RG59 75ohm, I shouldn't have an impedance miss-match issue, right?
The connection is short, <1m in length.

 

[Lambda]

Just use any old 2$ 3.5mm to rca cable. and try it.

i would assume tip, so left/white is signal

 

[JayGilb]

Yes, it's a physical mono connection, the digital information is transmitted as a stereo signal.
As @Lambda mentioned, at that length you could just try a stock cable.

The RG59 should work fine and yes, tip to tip and shield to shield only.