DAC0808 DATASHEET PDF

Compensation involves a capaci- tor to V EE on pin 16, using the values of the previous paragraph. The negative reference voltage must be at least 4V above the V EE supply. Bipolar input signals may be handled by connecting R14 to a positive reference voltage equal to the peak positive input level at pin When a DC reference voltage is used, capacitive bypass to ground is recommended. The 5V logic supply is not recom- mended as a reference voltage.

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The chip used to be popular a decade ago and its applications used to be many but at present there are many modern IC which can perform DAC with higher resolution, speed and efficiency.

So this device is mainly used for reference and beginner applications and nothing more. How to use DAC IC A typical application circuit for DAC is already given in the datasheet and we can use that circuit to develop applications without worry as the circuit is tested working. This is a major drawback which is eliminated in modern DAC to make them work from a single power source.

Working The device takes in parallel 8 bit data from a microcontroller or microprocessor and converts that data in to analog signal at the output. And the analog output from DAC is a current quantity and this needed to be converted in to voltage parameter for using in application easily. So to convert the current parameter in to voltage parameter we will use op-amp circuit as shown in circuit diagram. This op-amp circuit is called current-to-voltage converter. The output analog voltage from op-amp is in linear relation with input digital value and hence DAC conversion with DAC is achieved.

Similarly you can also use other application circuits for DAC given in the datasheet.

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PDF DAC0808 Datasheet ( Hoja de datos )

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