28

2021-10

Training seminar on packaging and application technology of silicon carbide module devices

2021-10-28

Training seminar on packaging and application technology of silicon carbide module devices

28

2021-10

HJMAG803A high-temperature three-axis high-precision weak magnetic measurement module mounted on the satellite

2021-10-28

HJMAG803A high-temperature three-axis high-precision weak magnetic measurement module mounted on the satellite

08

2021-10

Hangjing released domestically produced LVDT signal conditioning circuit

2021-10-08

Hangjing released domestically produced LVDT signal conditioning circuit

30

2021-09

Domestic LVDT Signal Conditioning Circuit - HJG598

2021-09-30

Domestic LVDT Signal Conditioning Circuit - HJG598

With the increasing uncertainty in the international environment and the continuous escalation of Sino-U.S. frictions, the suppression of China's integrated circuit industry by the U.S. and others is gradually expanding. It is becoming increasingly difficult to procure imported integrated circuits, with prices soaring hundreds or thousands of times, severely impacting China's economic development and national security. The trend towards domestic production in the integrated circuit industry is inevitable. In light of the country's increased policy support for the integrated circuit industry, which aims to gradually achieve domestic substitution of the integrated circuit supply chain, our company has launched a self-produced LVDT signal conditioning circuit, HJG598, based on over 200 types of domestically produced integrated circuits after preliminary market research, program validation, experimental verification, and our own technological accumulation and research. This product can functionally replace the imported AD598. Overview HJG598 is an LVDT signal conditioning circuit designed using thick film integration technology. It includes a positive sine wave oscillator and power driver to generate an excitation signal for driving the primary side of the LVDT. At the same time, HJG598 conditions and converts the amplitude-modulated (AM) signal output from a rotary transformer into a DC voltage, providing adjustable sum output (A+B) and difference output (A-B). Unlike AD598, it does not perform ratio division internally on-chip, making it easier for customers to directly determine whether the electrical connection between excitation and rotation is normal based on sum output (A+B). Users can implement division calculations on DSPs or microcontrollers with arithmetic functions to quantify angles. The HJG598 LVDT signal conditioning circuit is very suitable for precision industrial position and measurement applications due to its low temperature drift, high detection accuracy, high reliability, and high sensitivity. It is widely used in angle position detection systems in fields such as servo control systems, aerospace, electronics, etc. In summary, HJG598 truly realizes domestic substitution for AD598. Electrical Schematic Package Form and Pin Functionality 1. Package Form It uses ceramic dual in-line package HD14-02B and HD14-02C ceramic surface mount leadless packages; dimensions are shown in Figure 2: 2. Pin Functionality Table 2 shows pin functionality for packaging. Electrical Characteristics Unless otherwise specified: VCC=+15V,VEE=-15V,T_A=25℃. Typical Application Diagram Note: 1. Changing RSCL can alter EXC's amplitude; 2. Capacitors CT1 and CT2 must be paired and should use NPO/COG dielectric capacitors; 3. The REF pin can adjust the zero point of output voltage VA-B.

18

2021-09

Hangjing Microelectronics' domestic DC-DC selection is highly recommended.

2021-09-18

Hangjing Microelectronics' domestic DC-DC selection is highly recommended.

13

2021-09

Hangjing Microelectronics' domestic DC-DC selection is highly recommended.

2021-09-13

Hangjing Microelectronics' domestic DC-DC selection is highly recommended.

　　DC-DC power modules are widely used in communication, industrial control, automotive electronics, aerospace, and other fields. With the extensive use of semiconductor processes, packaging technologies, and high-frequency soft switching, the application of power modules is becoming increasingly widespread. The power density of power modules is increasing, conversion efficiency is improving, applications are becoming simpler, and demand is rising. This places higher requirements on the semiconductor industry. Hangjing Micro Integrated Circuit leverages its industry advantages to adopt modular power systems that feature short design cycles, high reliability, and easy system upgrades. Hangjing supports the development of the DC-DC industry and creates a domestic high-reliability semiconductor supply chain to serve high-reliability power and special power fields. Hangjing Microelectronics has a history of 20 years in R&D and production of microelectronic devices suitable for harsh environmental applications. The company has developed and produced eleven major series of Hangjing micro integrated circuits as well as sensor products. Currently, we particularly recommend domestically produced DC-DC power module product selection. The products are independently controllable with stable and reliable quality that can be supplied continuously over the long term. Below is a list of some supporting product catalogs. Some functional block diagrams and physical images are as follows:

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