To understand the role of each pin, please refer to the relevant IC application manual. After knowing the role of each pin, it is convenient to analyze the working principle of the external circuit of each pin and the role of components. For example: knowing that the ① foot is an input pin, then the capacitor connected in series with the ① foot is the input coupling circuit, and the circuit connected to the foot is the input circuit.

Three ways to understand the role of each pin of the integrated circuit

There are three ways to understand the role of each pin of an integrated circuit: one is to consult relevant information, the other is to analyze based on the internal circuit block diagram of the integrated circuit, and the third is to analyze the external circuit characteristics of each pin in the application circuit of the integrated circuit. The third method requires a good basis for circuit analysis.

Heisener offers flexible pcb assembly service. Our range of services include Quick Turn PCB, Rigid Flex PCB, and more PCB Customized Services. Submit a RFQ now.

Circuit analysis steps

How to understand the IC circuit diagram?

Knowing some key test points of integrated circuits and the rule of pin DC voltage is very useful for repairing circuits. The DC voltage at the output of the OTL circuit is equal to half of the DC operating voltage of the integrated circuit. The DC voltage at the output of the OCL circuit is equal to 0V. The DC voltage at the two outputs of the BTL circuit is equal. Time is equal to 0V.

When a resistor is connected between the two pins of the integrated circuit, the resistance will affect the DC voltage on the two pins. When a coil is connected between the two pins, the DC voltage on the two pins is equal, Unequal time must be an open circuit. When a capacitor is connected between two pins or an RC series circuit is connected, the DC voltage of these two pins must be unequal. If they are equal, the capacitor has broken down. Under normal circumstances, do not analyze the working principle of the internal circuit of the integrated circuit, which is quite complicated.

related articles：

Circuit design and circuit structure

Semiconductor integrated circuit classification

What are the areas of integrated circuits

IC application circuit function

Integrated circuit application circuit analysis

Disassemble with a tin cleaner

The tin suction device is a maintenance tool that uses manual or electric means to generate suction force and suck the solder away from the copper foil of the circuit board. The tin suction device is shown in the figure below. The lower tin suction device in the figure has a heating function, also known as a tin suction electric soldering iron.

The operation of disassembling the integrated circuit by using the tin absorber is shown in the following figure. The specific process is as follows: press the piston of the tin absorber down until it is stuck. Heat the solder joints with an electric soldering iron until the solder melts. Remove the electric soldering iron, and at the same time quickly attach the nozzle of the tin absorber to the solder joint, and press the button of the tin absorber to allow the suction force generated by the piston to bounce the solder into the tin absorber. If the suction is not clean once, the operation can be repeated multiple times. When the solder of all pins is sucked away, the integrated circuit can be removed from the circuit board.

Find IC SDRAM/IC DRAM memory on Heisener. We provide you with detailed specification that facilitates your search for the ideal parts. Get a quote from us now.

Use a brush to disassemble the soldering iron

This disassembly method is relatively simple, and only one electric soldering iron and a small brush are needed for disassembly. When using this method to dismantle the integrated block, first use an electric soldering iron to heat the solder at the pin of the integrated circuit. After the solder on the pin melts, immediately sweep away the molten solder with a brush, and then use this method to remove other After the solder of all the pins is removed, use tweezers or a small flat-blade screwdriver to pry off the integrated circuit.

Use multiple strands of copper wire to remove tin. When using this method for disassembly, multiple strands of copper core wire are required.

related articles：

The main points of use in the road DC voltage measurement method

Compare the reference data to determine the fault

Main points of use in road resistance measurement

Exclusion and substitution methods

Substitution of integrated circuits

programmable sliding rheostat, after repeated research on it, found to be a perfect alternative; this digital potentiometer chip can refer to MCp41100 model

Digital potentiometer chip

Digital potentiometer pin Diagram

This is the pin definition diagram of the MCp41100 digital potentiometer chip. Among them, the CS pin, SCK pin and SI pin are connected to the microcontroller, the pA0 pin, pW0 pin and pB0 pin are the A pin of the corresponding sliding rheostat W pin and B pin; the output resistance of the potentiometer can be controlled through the software programming of the single chip microcomputer; the typical circuit application diagram is as follows

Digital potentiometer circuit application diagram

In this way, the function of controlling the potentiometer can be realized by programming the software, which can better replace the function of the traditional sliding rheostat (potentiometer), and realize the compatibility and complementation of the circuit functions;

I don't know whether there is an intuitive understanding of the digital potentiometer chip, if you encounter related design problems in circuit design.

Looking for deals? digital potentiometer programmable from Heisener is the right answer. Request a real-time quote on our web and choose from different manifacturers.

related articles：

Digital potentiometers and circuits

How to control the digital potentiometer

Digital potentiometer analog log tap

How does the potentiometer achieve multiple gains of the in-phase amplifier

Digital potentiometer chip

Emerging trends and the fastest-growing companies will flourish globally. The SiC semiconductor market is valued at US $ 29 million in 2019 and is expected to reach US $ 138.5 million by 2027; CAGR is expected to grow at a compound rate of 22.6% from 2020 to 2027 Growth rate growth. SiC

Semiconductor devices are used in inverters and power electronic devices to provide energy from photovoltaic arrays to power grids and other applications such as heat exchangers in centralized solar power plants. electric car. In the early days, silicon-based devices were the first choice for semiconductors. However, according to research, SiC-based semiconductor devices are faster, smaller, stronger, more efficient and more cost-effective. They can withstand higher temperatures and voltages than silicon semiconductors, which makes them reliable and versatile inverter components.

Commons Workshop provides coworking . Break free from the setting of the traditional office and join us in this wonderful workspace in Wan Chai. Spark communications today with the like-minded.

Many researchers are planning to expand the use of SiC semiconductor devices with the help of power electronics equipment that connects distribution lines to transmission lines. This saves energy. In order to surge the demand for SiC devices in solar photovoltaics, the government looks forward to investing heavily in the energy industry. For example, the renewable energy sector in rural areas is the fourth most attractive market in the world. In 2018, the country ranked fourth in wind power generation and fifth in installed capacity of solar power and renewable energy. Since the last few years, the installed renewable power generation capacity has grown rapidly. With the increasing support of the national government, the energy industry has become attractive from the perspective of investors.

The report highlights the key growth strategies adopted by these players in the SiC semiconductor industry, including financial profiles, products / services provided, significant developments, and SWOT analysis details.

The report analyzes the factors that affect the SiC semiconductor market from both supply and demand sides, and further evaluates the market dynamics that affect the market during the forecast period, that is, driving factors, constraints, opportunities and future trends. The report also provides a detailed pEST analysis of all five regions. After evaluating the political, economic, social, and technological factors affecting the SiC semiconductor market in these regions, North America, Europe, Asia pacific, MEA, and South and Central America.

TDA7297 is a dual-bridge amplifier specifically designed for TV and portable broadcast applications.

related articles：

Recent semiconductor industry outlook

What effect does the market have on semiconductor exports

Impact of the market on the company's chips

How about semiconductor investment

Strong chip demand investment

About one-third of agricultural production is eventually landfilled, unfortunately confirming the second law of thermodynamics. Simply put, the second law of thermodynamics says that every energy conversion is accompanied by energy loss. A large part of this loss is due to the industrialization of agricultural products. Especially when checking the storage and transportation parts of the food chain, we found that losses accounted for 17% of global production. This is because the grains are exposed to microorganisms and insects when they are transported or stored in the silo, and the microorganisms and insects will find the ideal growing environment.

Compare different touch screen controllers and touch screen light switch panel from Heisener. Request a real-time quote with competitive prices.

How IoT technology is part of the solution

IoT technology attempts to provide solutions to improve the supply chain because it uses a variety of sensors, some of which have very high-precision measurement results and machine learning algorithms for big data analysis.

Therefore, one of the competitive advantages is the use of patent-level military-grade technology for agriculture. According to Dr. Sotiris Bantas, Centaur's sensors are "the only commercial technology capable of sensing and transmitting in mass storage to monitor the quality of the entire product." In other words, four sensors are sufficient to fully monitor about 30.000 bushels (1.000 metric tons) Silo.

Find your best fit in different style from JND Water, a Chinese supplier with exceptional quality and credibility.

related articles：

How is the market for pressure sensors

Wearable sensor market size

Quantum dot sensor market

New digital power control system

Using sensor accessories to realize digital power control