TPA2016 single channel

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sting
 
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TPA2016 single channel

Post by sting »

If I want to use the single channel of the TPA2016 can I leave the other channel input floating?

I need individual channel I2C amplification control, is there another technology that will give me this capability. I am driving it with the dac from a teensy.

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adafruit_support_mike
 
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Re: TPA2016 single channel

Post by adafruit_support_mike »

It would be slightly more correct to put a 1k resistor between the + and - inputs of the channel you don't want to use.

If you leave the pins floating, they can assume any voltage (and static electricity can do wild things). Connecting the pins with a resistor guarantees that both pins will have the same voltage, and therefore the differential voltage between the pins will always be 0v.

To be extra sure, you can send I2C commands to turn the unused channel on and off.

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