Voltage Detection and Reset Manufacturer: Introduction to Shanghai Mingda Microelectronics Co., Ltd

Company name: Shanghai Mingda Microelectronics Co., Ltd

Region: Shanghai

Manufacturer type: Design Manufacturer

company website: http://www.md-ic.com.cn

Data provided: recommended by Shanghai IC Industry Association

Company profile

The predecessor of the company is Shanghai Mingda Electrical Technology Research Institute. Founded in 1996 and renamed Shanghai Mingda Microelectronics Co., Ltd. in April 2004, it has a history of more than ten years. More than 70% of the employees have intermediate and senior technical titles and are recognized as integrated circuit design enterprises by the Ministry of information industry of the people's Republic of China. In the development process of the company, it has accumulated rich experience in product design, formed a perfect production cooperation system, and laid a good foundation for production management. The company's design, production and management are orderly, and the product quality is strictly controlled. It has passed the certification of ISO9001:2000 quality management system in 2005. The products independently developed and sold by the company have also reached a certain scale. In 2006, it was recognized as a high-tech enterprise in Shanghai by Shanghai Science and Technology Commission.

Over the years, the company has successfully developed dozens of application specific integrated circuits in cooperation with customers. It involves CMOS, BiMOS and bipolar process types. Wide range of applications: in terms of communication, there are special control circuits for SPC exchanges; In terms of household appliances, there are color TV remote control circuit, display line scanning circuit, display frame scanning circuit, four-way touch switch circuit, FM and am radio circuit, electronic anti-theft door lock circuit; Industrial automation control has time relay circuit; In terms of cultural and educational supplies, there are special circuits for computer learning machines and special circuits for voice repeaters; In terms of public utilities, there are prepaid special circuits for magnetic card machines, special circuits for automotive intelligent wipers, and special circuits for height measurement......

In recent years, the company has independently developed power management low-voltage differential voltage stabilizing circuit and voltage detection circuit, two categories and dozens of varieties of series products. These products are characterized by high precision, small differential pressure, low power consumption and small temperature drift. And complete varieties and specifications, various packaging forms, good performance and stable quality. It can be interchanged with similar foreign products.

All the products provided by the company are characterized by strong anti-interference ability, strong anti-static ability, stable electrical parameter performance, high on-line rate and low work failure rate. The company will continue to build its own brand, broaden the sales market, and let customers be satisfied and assured.

Business contact: Xu Fei, Tel.: 021-64104739, 15821477487, Fax No.: 021-64103832, email: fishxu@md -ic.com.cn

Company products

Power management chip

LDO low dropout linear regulator

Voltage detection and reset

Voltage Detection and Reset Manufacturer: Introduction to Shanghai Mingda Microelectronics Co., Ltd 1

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Have You Ever Used Tape Storage
As long as it is related to technology, "never say impossible" to technologies that seem to be outdated. When one day there is a "change of Dynasty", it may "make a comeback", or even become more usable or attractive, and become a good way to solve new problems.It can't be true? Are we stepping into the time machine now? Everyone knows that "tape" is... "Antique" technology! Don't all storage applications now use solid state disk (SSD) or hard disk drive (HDD) memory?The answer is not exactly right. In a recent article in the Wall Street Journal - "companies look to an old technology to protect against new threats", it is mentioned that many companies store data on tape again in case. This is not just an anecdote: there are some powerful data certificates in the market, the unit shipment of tape has increased, and more and more data is stored on tape.Although tape is not as easy to access as SSD or HDD memory, this attribute is also an advantage, especially when the "worst" situation occurs, it can show its strong and slow recovery mechanism. In addition, because tapes cannot be "online", hackers are unlikely to access them. The Wall Street Journal article pointed out that "the government, financial services companies, medical insurance companies and other regulated industries still use tape as a backup system for digital records. Now, some companies are turning back to tape technology because hackers are becoming more and more powerful in penetrating their preventive measures."If you still stick to the old idea that tape is a large volume of disk, it is really out of date; In fact, there are only some archive disks left, and we are lucky to find the playback device. At present, the tape industry has standardized on the easy-to-use tape cartridge, so that it can play and rewind through the manipulator under the large array configuration of the tape drive "field", as shown in the table. Even with the assistance of the international tape storage Council, some standards began to appear, focusing on defining overall dimensions and formats, etc. Tape storage Council is an industry organization established in 2012 to promote the technological innovation and application of tape storage industry.Modern tape drives (lto-7) can be equipped with backup and restore performance up to 750mb / S (2.7tb / HR), and each cartridge can support 15tb of data (source: quantum Corp.)Two key criteria: ltfs and LTOThe two key standards of tape technology are linear tape file system (ltfs) - which can make tape "almost" like HDD; And the linear tape open (LTO) standard developed in the late 1990s as an alternative to the then proprietary tape format. In the "technology advances promote tape to new markets" report recently published by the tape storage Council, it briefly describes the latest progress and application of tape technology.The comparison of tape with SDD or HDD is not limited to security; The tape storage Council believes that reliability and bit error rate (BER) also deserve attention. As shown in the figure below, the quantum lto-7 has an error every 1019 bits, while the HDD of the top gauge has an average error of 1016 bits. The difference of up to three orders of magnitude is really impressive. Other performance comparisons between tape and HDD are also noteworthy, and may even break the traditional myth.Comparing different data storage media shows that high-performance tape provides the lowest bit error rate, even 1000 times better than other technologies (source: tape storage Council)The tape system is also a miniature analog signal and wireless transmission link, even if the stored data is digital. In many ways, it is similar to RF channel, except that RF is replaced by magnetic field for energy transmission. In addition, it also has all the problems that affect the RF "wireless" link, such as jitter, signal-to-noise ratio (SNR), inter symbol interference, signal strength change and so on.Of course, the reading channel starts with the analog preamplifier (installed as close to the reading head itself as possible) and the variable gain amplifier (VGA). But that is only the beginning of analog signal processing, because advanced tape systems use read channels with partial response, maximum likelihood (PRML) signal detection circuits to maximize the chance of successful and zero error data restoration (although the channel is irregular). Although the physical scale may be much smaller than the RF link, the signal path blocks are similar.There seems to be a development element contrary to "going back to the future". Tape is not only the first high-density data storage mechanism (much earlier than HDD), but also an early "amateur" - personal computers (PCS) use Philips Consumer audio tape cartridges as low-cost storage media (of course, low-speed and low-capacity), load the operating system and store programs and data through the "boot loader". Today, tape is not cost-effective for hobbies and business applications, especially high-density HDDs, which are more affordable and random access, but potential tape technology still plays a vital role - and even the trend of "comeback".As usual, I would like to reiterate once again: as long as it is related to technology, it is "never impossible" to say what seems to be outdated technology. When one day the "dynasty changes", it may "reappear in the Jianghu", or even become more usable or attractive, and become a good way to solve new problems.Have you used advanced LTO / ltfs tape technology? Or have you ever used tape storage before?
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