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
The Effective Number of Bits (ENOB) of an ADC is one of the key indicators for measuring the actual performance of an Analog-to-Digital Converter (ADC). This article first provides a simple theoretical foundation, followed by examples illustrating how to calculate signal power, noise distortion power, and subsequently obtain the Signal-to-Noise and Distortion Ratio (SINAD) and … Read more
There are many key indicators for measuring the quality of an oscilloscope testing system, and the “Effective Number of Bits (ENOB)” is crucial for understanding the entire measurement system. This article will discuss the effective bits of oscilloscopes, the impact of ENOB on actual signal testing, and provide methods for solving it using EXCEL in … Read more