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How to connect stereo (2 channel) signal to 4 channel analog inputs

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arunkumar413

New Member
Hi Team,

I'm using
TAS5414C-Q1 IC for audio amplifier. It has 4 channel analog inputs. I'd like to interface 2 channels from a 3.5 mm jack to these 4 channel inputs. How do I achieve this. Should I parallel the inputs. Is the below pic right way to connect in this regard?

https://ibin.co/3RmrPVBx4Sy5.png

Also the inputs to the analog channels shouldn't exceed 1V. How to limit the input to 1V for all channels using a single potentiometer knob.

Thanks,
Arun
 

audioguru

Well-Known Member
Most Helpful Member
A 3.5mm jack has two channels and a common ground. The datasheet for the amplifier IC shows a series input capacitor for each input (you have none) plus a capacitor from ground of the signal source to pin 18 called IN_M.
You do not show the ground of the jack connected with a series capacitor to the amplifier IC.
The datasheet says the maximum input is 1.9V RMS which is 5.37V p-p.
 

MikeMl

Well-Known Member
Most Helpful Member

audioguru

Well-Known Member
Most Helpful Member
Since you did not sketch an accurate schematic then you do not know what you are doing and we also do not know what you are doing.
 

arunkumar413

New Member
Apologies for the confusion. The sketch is just a block diagram to check with you guys if it's the right way to connect.
 

audioguru

Well-Known Member
Most Helpful Member
We are waiting for you to post a detailed schematic with an audio ground and input capacitors on the amplifier inputs as shown on the datasheet.
 
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