Reverse ADC, DAC?

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tom_pay

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Hi

In Micro Controllers we use ADC, producing a digital representation of an analogue input. But how is it done in reverse, producing an analogue output from a digital signal?

Tom
 
Hi

In Micro Controllers we use ADC, producing a digital representation of an analogue input. But how is it done in reverse, producing an analogue output from a digital signal?

Tom

hi,
One way that is used is PWM connected to a diode/resistance/capacitor 'demodulator' [ actually a C/R filter]
 
Or you can use a microcontoller with a DAC built in.


..or an external DAC chip.
 
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