Howtosignalprocessing
- How do I choose a sampling rate for ADC?
- What is precision of ADC?
- What is sample rate for audio?
- What is the rule of thumb for selecting ADC sampling rate?
How do I choose a sampling rate for ADC?
The sampling rate for your ADC should be at least double the frequency you want to measure with your ADC. If you're working in a specific frequency band, then you should choose your ADC based on the frequency at the high end of your desired band.
What is precision of ADC?
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).
What is sample rate for audio?
The audio sample rate is a measurement of the samples per second taken by the system from a continuous digital signal; these frequencies are measured in kilohertz (kHz). The audio sample rate determines the range of frequencies captured in digital audio.
What is the rule of thumb for selecting ADC sampling rate?
Use Your ADC Sampling Rate to Reduce PCB Noise
A good rule of thumb when sampling a wide bandwidth analog signal is to set the sampling rate anywhere from 2 to 5 times the fundamental frequency in your signal.
