Table of Contents
- 1 What is the main effect of ADC A in microprocessor?
- 2 What are the important factors to consider in an ADC conversion?
- 3 Which ADC is used with microprocessor?
- 4 What is the function of the following two signals EOC and SOC in an ADC while interfacing to a microprocessor?
- 5 How can you increase the accuracy of ADC?
- 6 What is the need for ADC interfacing?
- 7 How to measure analog voltage with an ADC converter?
- 8 What is a potential divider used for in circuits?
- 9 What is the output voltage from the voltage divider of the chip?
What is the main effect of ADC A in microprocessor?
An ADC converts a continuous-time and continuous-amplitude analog signal to a discrete-time and discrete-amplitude digital signal. The conversion involves quantization of the input, so it necessarily introduces a small amount of error or noise.
What are the important factors to consider in an ADC conversion?
There are a few main items to consider, before selecting which ADC is best suited to your project.
- Availability/Cost.
- Precision/Resolution (number of bits)
- Accuracy (error in conversion)
- Speed (time for one conversion, different from clock speed)
- Voltage Range.
- Multiplexing.
- Ease of Use.
Which ADC is used with microprocessor?
The ADC 0808/0809 is an 8-bit analog to digital converter. It has 8 channel multiplexer to interface with the microprocessor. This chip is popular and widely used ADC. ADC 0808/0809 is a monolithic CMOS device.
Why are ADCs and DACS required in an embedded system?
Analog to Digital Converter (ADC) and Digital to Analog Converter (DAC) are very important components in electronic equipment. Since most real world signals are analog, these two converting interfaces are necessary to allow digital electronic equipments to process the analog signals.
How does ADC work in microcontroller?
An ADC is used to convert an analogue signal such as voltage to a digital form so that it can be read and processed by a microcontroller. ADC converters are very useful in control and monitoring applications since most sensors (e.g., temperature sensor, pressure sensor, force sensor) produce analogue output voltages.
What is the function of the following two signals EOC and SOC in an ADC while interfacing to a microprocessor?
SOC [Start of conversion]: When High to low signal is appears to this pin of ADC, ADC then starts conversion. EOC [End of conversion]: ADC sends this high EOC signal to Micro-Controller to indicate completion of conversion.
How can you increase the accuracy of ADC?
To minimize the ADC errors related to the external environment, take care of the reference voltage and power supply, eliminate the analog-input signal noise, match the ADC dynamic range to the maximum signal amplitude, and match analog-source resistance.
What is the need for ADC interfacing?
Analog-to-Digital Converters (ADCs) are used to convert analog signals into digital representations that can be communicated and processed using digital logic. This ADC reference design (RD1089) provides an example of how the LatticeECP3 or LatticeECP2 FPGA can be used to interface to a high-speed ADC device.
What is the function of ADCs and DACs?
In electronics, a digital-to-analog converter (DAC, D/A, D2A, or D-to-A) is a system that converts a digital signal into an analog signal. An analog-to-digital converter (ADC) performs the reverse function.
What is the different between ADC and DAC?
In simplest terms, it’s this: an ADC is attempting to capture and convert a largely unknown signal into a known representation. In contrast, a DAC is taking a fully known, well-understood representation and “simply” generating an equivalent analog value.
How to measure analog voltage with an ADC converter?
When using an ADC converter to measure analog voltage the result obtained by the MCU will be in digital. For example in a 10-bit 5V microcontroller when the actual voltage that is to be measure is 4V the MCU will read it as 820, we can again use the above discussed formulae to convert the 820 to 4V so that we can use it in our calculations.
What is a potential divider used for in circuits?
Potential Divider. A potential divider is widely used in circuits. It is based on the principle that the potential drop across a segment of a wire of uniform cross-section carrying a constant current is directly proportional to its length. It is used in the volume control knob of music systems.
What is the output voltage from the voltage divider of the chip?
Picking R1 and R2 to be 10kOhm and 20kOhm respectively satisfies all these requirements. The output voltage from the voltage divider is 3.33V and is within the boundaries of the input voltage range of the chip. Share Cite
What is ADC in a microcontroller?
As said earlier ADC stands for Analog to digital conversion and it is used to convert analog values from real world into digital values like 1’s and 0’s.