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It has 8 channel multiplexer to interface with the microprocessor. This chip is popular and widely used ADC. This device uses successive approximation technique to convert analog signal to digital form. Let us see the circuit diagram of connecting , and the ADC converter.
The PortA of chip is used as the input port. This port is also used as input port. The C lower port is used as output port. Note that some Analog to Digital Converters may require Digital to Analog Converter as an internal block for their operation. Resolution is the minimum amount of change needed in an analog input voltage for it to be represented in binary digital output.
It depends on the number of bits that are used in the digital output. From the above formula, we can observe that there exists an inverse relationship between the resolution and number of bits. Therefore, resolution decreases as the number of bits increases and vice-versa. Resolution can also be defined as the ratio of maximum analog input voltage that can be represented in binary and the equivalent binary number.
The amount of time required for a data converter in order to convert the data information of one form into its equivalent data in other form is called as conversion time. Since we have two types of data converters, there are two types of conversion times as follows. The amount of time required for an Analog to Digital Converter ADC to convert the analog input voltage into its equivalent binary digital output is called as Analog to Digital conversion time.
The amount of time required for a Digital to Analog Converter DAC to convert the binary digital input into its equivalent analog output voltage is called as Digital to Analog conversion time.
It depends on the number of bits that are present in the binary digital input.
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