This is essentially the mathematical version of the previous article; I prefer a more serious approach.Review of ADC Encoding Principles: The digital output of an ADC (ignoring quantization error) is: Where: Vin: Input signal voltage; Vref: Reference voltage; N: Number of bits of the ADC; Introducing Reference Voltage Noise Assume: Ideal reference voltage: Actual reference … Read more
Introduction: Misconceptions about ADC Noise Floor Many performance metrics of ADCs need to be obtained through spectrum analysis. The general process involves the ADC first collecting a set of data, and then generating a spectrum graph on a PC through FFT calculations. The data sheet of the ADC will also display such spectrum graphs. For … Read more
In practical systems, signals are often interfered with by noise, resulting in noisy signals. Simply put, the Signal-to-Noise Ratio (SNR) is the ratio of signal power to noise power within a given signal bandwidth. Typically, this is calculated by performing a Fast Fourier Transform (FFT) and examining the fundamental signal power and the noise spectral … Read more
Why Is Bluetooth® Low Energy Long-Range Connection So Important? Nowadays, the number of Bluetooth devices and applications is continuously increasing. Applications such as warehouse asset tracking, smart home devices, livestock tracking, and remote control devices all require long-range connection capabilities in terms of functional needs and user experience. As Bluetooth devices proliferate, we need a … Read more