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TS5A23159: Switching audio and video

Part Number: TS5A23159

:  I am trying to switch 8 ohm speakers. When switched off there still is a scratchy sound coming though from the amplifier. The speakers are not completely switched off. I have tried a dummy load on the NC side of the switch but made no difference. Is there an application note pertaining to audio speaker switching or can you please send me some info regarding speaker switching.

Also will this be a problem when switching video from eg car cameras.

Thank you
Regards
Martyn

  • Martyn, 

    Do you have scope captures of the waveforms passing through the switch when the switch is on and off?   COM, NC, and NO ?

    The TS5A23159 device is not specified to pass signals < 0 V. 

    If you would like and audio switch that can support negative voltage signals, please look at the TS5A2236X family of devices.

    Difference between TS5A22362, TS5A22364, and TS5A22366 [Dual SPDT analog switches for audio applications]

  • In reply to Adam Torma:

    Hi Adam

    thank for the information. I don't have scope capture's at present but will look at it.

    I have put car camera video signals through the TS5A23159 ad get nothing when the switch is made, I  presume this is the same as audio signals. By using the TS5A22364 etc. will this cure this problem or do I have to use a different analog switch.

    Once again thank you for your assistance.

    Regards

    Martyn

  • In reply to Martyn Milne:

    Martyn,

    How are you determining you get "nothing" when the switch is conducting? It is unlikely you will get "nothing" if the switch is conducting unless it is damaged.

    What is the voltage swing of your video signals?

    Adam
  • In reply to Adam Torma:

    Martyn,

    I haven't heard a reply from you in a couple weeks. Were you able to resolve the issue? I'm going to mark this thread as closed. If you have additional questions replying to this post will re open the thread or you may create a new thread.

    Thank you,
    Adam
  • In reply to Adam Torma:

    Hi Adam

    I have solved the problem, which was to with some earthing on the video side. All is now functional.

    Thank you for your assistance

    Regards

    Martyn

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