What is ADC module?
An analog-to-digital converter (ADC) is used to convert an analog signal such as voltage to a digital form so that it can be read and processed by a microcontroller. Most microcontrollers nowadays have built-in ADC converters. It is also possible to connect an external ADC converter to any type of microcontroller.
What are ADC devices?
In electronics, an analog-to-digital converter (ADC, A/D, or A-to-D) is a system that converts an analog signal, such as a sound picked up by a microphone or light entering a digital camera, into a digital signal.
Which of the following is the register that is used for enabling the ADC conversion?
AD0CR is a 32-bit register. This register must be written to select the operating mode before A/D conversion can occur. It is used for selecting channel of ADC, clock frequency for ADC, number of clocks or number of bits in result, start of conversion and few other parameters.
What is ADC programming?
Analogue to Digital Converter, or ADC, is a data converter which allows digital circuits to interface with the real world by encoding an analogue signal into a binary code.
How does ADC work in microcontroller?
ADCs follow a sequence when converting analog signals to digital. They first sample the signal, then quantify it to determine the resolution of the signal, and finally set binary values and send it to the system to read the digital signal. Two important aspects of the ADC are its sampling rate and resolution.
What is the main role of ADC?
Analog-to-digital converters, abbreviated as “ADCs,” work to convert analog (continuous, infinitely variable) signals to digital (discrete-time, discrete-amplitude) signals. In more practical terms, an ADC converts an analog input, such as a microphone collecting sound, into a digital signal.
What are the applications of ADC?
Application of ADC
- Used together with the transducer.
- Used in computer to convert the analog signal to digital signal.
- Used in cell phones.
- Used in microcontrollers.
- Used in digital signal processing.
- Used in digital storage oscilloscopes.
- Used in scientific instruments.
- Used in music reproduction technology etc.
What are the registers used to configure ADC?
ADC Registers
| Register | Description |
|---|---|
| ADCR | A/D COntrol Register: Used for Configuring the ADC |
| ADGDR | A/D Global Data Register: This register contains the ADC’s DONE bit and the result of the most recent A/D conversion |
| ADINTEN | A/D Interrupt Enable Register |
How many channels are there in ADC?
The ADC is connected to an 8-channel Analog Multiplexer which allows each pin of PortA to be used as input for the ADC. The analog input channel is selected by writing to the MUX bits in ADMUX. This allows the selection of any of the 8 channels, AGND, or a fixed voltage reference.
What are the steps for ADC?
While there are many ways of implementing an ADC, there are three conceptual steps that occur:
- The anti-aliasing filter blocks unwanted frequencies.
- The signal is sampled.
- The sampled signal is quantized.
- The quantized signal is digitally coded.