Phenobarbital

Theoretical Research on Self-assembled Phenobarbital and Acrylamide Systems

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Theoretical Research on Self-assembled Phenobarbital and Acrylamide Systems

Theoretical Research on the Self-assembly System of Molecularly Imprinted Polymers Formed via Phenobarbital and Acrylamide WANG Guang-Yu (王光宇) LIU Jun-Bo (刘俊渤) TANG Shan-Shan (唐珊珊) CHANG Hai-Bo (常海波) JIN Rui-Fa (靳瑞发) Chinese J. Struct. Chem., 38, 1069 (2019) To prepare phenobarbital (PHN) molecularly imprinted polymers (MIPs) with higher adsorption and selectivity, this paper employed quantum chemical … Read more

Time Interleaved ADC Series: Interleaved Non-Ideal Factors

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Time Interleaved ADC Series: Interleaved Non-Ideal Factors

Time interleavedADC improves the sampling rate ofADC by using multiple parallel workingADCs. Ignoring the non-ideal factors present in thechannel ADC, there are non-ideal factors such asoffset mismatch, gain mismatch, and timing skew between the interleavedADCs, which causespur in theADC output leading to a decrease inENOB. Assuming thechannel ADC is ideal and ignoring noise factors. 4-way … Read more

How Reference Voltage Noise Affects the LSB Size of ADCs and Ultimately Injects Output Errors

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How Reference Voltage Noise Affects the LSB Size of ADCs and Ultimately Injects Output Errors

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

Understanding the Effective Number of Bits (ENOB) in ADC Circuit Design

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Understanding the Effective Number of Bits (ENOB) in ADC Circuit Design

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

What Impact Does Effective Number of Bits Have on Signal Measurement in Oscilloscopes?

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What Impact Does Effective Number of Bits Have on Signal Measurement in Oscilloscopes?

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