FPGA Based Digital World

Welcome to FPGA based Digital World

This site focuses on knowledge related to FPGA, from basic analog electrionics, digital electrionics, FPGA to SoC, and software technology.Use the menus above, or select a topic from the preview boxes below.

System on a Chip (SoC)

System on a chip or system on chip (SoC or SOC) is an integrated circuit (IC) that integrates all components of a computer or other electronic system into a single chip. It may contain digital, analog, mixed-signal, and often radio-frequency functions—all on a single chip substrates.

SoCs are very common in our life. For example, mobile phone, laptop, iWatch, DVD and IPTV etc., they all hide SoCs in them.

The basic idea of introducing SoC into electric devices is to integrate more components into the same piece of silicon to reduce size and cost while enhancing performance.

This part introduces the the concept of SoC,its architecture, vendors and popular MCU SoC,SoC FPGA, etc.

Analog Electronic Device

An analog voltage amplifier is the most common amplifier, with both its input and output being voltages, and can be built with different components:

- Discrete component, e.g., BJT(Bipolar Junction Transistor) or FET(Field-EffectTransistor);

- Monolithic operational amplifier;

- Monolithic Field Programmable Analog Array (FPAA).

FPGA Device

FPGA and CPLD are high-densigy programmable logic devices(PLD) in fashion.

This section discusses its histroy, structure,programming technology and other related topics.

Analog Electrics and Circuit

Electric circuits interconnect electric elements (or electric devices) to accomplish the targeted task according to the application.

In this section,circuit element of analog devices, circuit analysis methods and analysis theorem, phasor ,and transfer function are discussed. In addtion, the application of Fourier series and tranformation, Laplace tranformation in circuit analysis are also depicted.

AC Circuit Analysis Techniques

In this section, an example problem will be solved with different techniques including Simetrix Simulation, Nodal Analysis, Mesh Analysis, Superposition Theorem, Thevenin's Theorem and Notron's Theorem.

Frequency Response of a Sinusoidal Circuit

In sinusodial circuit analysis,

- If source frequency remains constant, phasor method is employed to find the ciruit's gain and phase behavior;

- If source amplitude remains constant, frequency response is employed to find the circuit's dynamic behavior as a function of frequency.

The frequency response of a circuit is the variation in its behavior wiht change in signal frequency.

Two methods are employed to describe the circuit's frequency response.

1) Transfer function

2) Bode plot


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