How is the ADC used in an embedded system?
An embedded system uses the ADC to collect information about the external world (data acquisition system.) The input signal is usually an analog voltage, and the output is a binary number. The ADC precision is the number of distinguishable ADC inputs (e.g., 4096 alternatives, 12 bits).
What’s the difference between ADC and ADC precision?
The input signal is usually an analog voltage, and the output is a binary number. The ADC precision is the number of distinguishable ADC inputs (e.g., 4096 alternatives, 12 bits). The ADC range is the maximum and minimum ADC input (e.g., 0 to +3.3V).
Which is the minimum and maximum ADC range?
The ADC range is the maximum and minimum ADC input (e.g., 0 to +3.3V). The ADC resolution is the smallest distinguishable change in input (e.g., 3.3V/4095, which is about 0.81 mV). The resolution is the change in input that causes the digital output to change by 1. Range (volts) = Precision (alternatives) • Resolution (volts)
What does the adcon0 Register do in a microcontroller?
In ADCON0 register, clear HS0 and CHS2 & set CHS1, to connect AN2 channel with the internal S&H circuit (sample & hold). In the register ADCON1, clearing the VCFG bit will decide the voltage supply for A/D conversion. This register is used to select the clock source in A/D conversion.
How to calculate the memory needed for ADC?
Let fs be the sampling rate in Hz, and T be the total time interval required to collect samples in sec. Give a formula that relates needed memory in bytes as a function of fs and T. : Assume you have an 8-bit ADC. Let the sampling rate be 100 Hz. Assume you allocate 20,000 out of the available 32,768 bytes of RAM to store the data.
Which is the correct definition of the ADC precision?
The ADC precision is the number of distinguishable ADC inputs (e.g., 4096 alternatives, 12 bits). The ADC range is the maximum and minimum ADC input (e.g., 0 to +3.3V). The ADC resolution is the smallest distinguishable change in input (e.g., 3.3V/4095, which is about 0.81 mV).