hi all,
i have a problem with the interface of one of my projects. Basically i have a 12 bit DAc that is a unipolar device. I wish for the output to be bipolar.
my project is based on audio signal conversion. The DAc is connected to a audio amplifier.
However from the looks of things its also a unipolar device.
Now somewhere along the line i have to convert this unipolar signal into a bipolar signal before i pass it into a speaker.
My confussion comes from the audio ic, from my interpretation the ic is ran from a single supply. (Link to datasheet provided below.) Now if this ic is described as an audio amplifier how can it perform as described if there is no negative supply. As far as i am aware audio signals have a negative cycle and therefore will require a negative voltage swing????
Can anyone comment on this.
Thanks
Andy
www.ortodoxism.ro/datasheets/nationalsemiconductor/LM4838.pdf
i have a problem with the interface of one of my projects. Basically i have a 12 bit DAc that is a unipolar device. I wish for the output to be bipolar.
my project is based on audio signal conversion. The DAc is connected to a audio amplifier.
However from the looks of things its also a unipolar device.
Now somewhere along the line i have to convert this unipolar signal into a bipolar signal before i pass it into a speaker.
My confussion comes from the audio ic, from my interpretation the ic is ran from a single supply. (Link to datasheet provided below.) Now if this ic is described as an audio amplifier how can it perform as described if there is no negative supply. As far as i am aware audio signals have a negative cycle and therefore will require a negative voltage swing????
Can anyone comment on this.
Thanks
Andy
www.ortodoxism.ro/datasheets/nationalsemiconductor/LM4838.pdf
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