Domestic signal chain chips are becoming popular! These companies' products are attracting attention

Jiangsu Di'ao Microelectronics Co., Ltd. is an analog integrated circuit design company that covers mixed signal product lines, power management and ACDC high-voltage and high-power products. It provides overall analog solutions for various markets, mainly serving the fields of consumer electronics, medical electronics, industrial electronics and smart lighting, including mobile phones, wearable products, televisions, electric meters, carrier communications, Internet of Things, commercial lighting and other markets. The main products include USB interface integrated circuits, low-power low-noise amplifiers, high-voltage and high-current power management ICs, smart lighting control and ripple removal ICs, high-definition audio and video signal modulation ICs, etc.

The DIO4480 chip has completely independent intellectual property rights. Its product performance has reached the world's top level and surpassed European and American competitors in some indicators. Its surge resistance exceeds positive and negative 25V, bandwidth exceeds 1GHz, and THD reaches -105dB. It also has price and supply advantages over European and American competitors.

Rongpai Semiconductor (Shanghai) Co., Ltd. is a domestic supplier of high-performance analog integrated circuits with global leading technology. Its currently launched products include the digital isolator π1xxx & π2xxx series products. The comprehensive performance of this series of products is several times better than the current products of the same level on the market, which greatly expands the application scope of isolators.

Rongpai Semiconductor focuses on the research, development and sales of isolator series (standard digital isolators, isolated transceivers, isolated drivers and isolated voltage sources) and current sensor series products. The company has applied for 21 global invention patents in the field of isolation. Among them, intelligent voltage divider technology (iDivider technology) is a digital isolator technology invented by Rongpai Semiconductor.

Digital Isolator π122M31

The digital isolator π122M31 has 3KVrms and 5KVrms isolation voltage options, and its power consumption is about 60% lower than that of European and American isolation chips, with better EMI performance. In addition, the chip area is only about 1/5 of that of European and American isolation chip manufacturers, which is conducive to reducing customer system costs.

The chip uses Rongpai Semiconductor's original intelligent capacitor voltage divider (iDivider) technology. Based on the principle of capacitor voltage division, the voltage signal is transmitted from one side of the capacitor to the other side without the need for RF signals and modulation and demodulation. Compared with other isolation technologies (optocoupler Opto-Coupler, iCoupler, OOK, etc.), it is a more essential and simpler isolation signal transmission technology.

Digital Isolator π122U31

智能电器领域由于价格的原因，一直使用光耦。荣湃数字隔离芯片相比光耦在温漂、寿命和一致性等方面都有显著的提高，且 价格相比于高速光耦有显著降低，相比普通光耦也有一定程度降低。

The chip uses Rongpai Semiconductor 's original intelligent capacitor voltage divider (i Divider) technology. Based on the principle of capacitor voltage divider, the voltage signal is transmitted from one side of the capacitor to the other side without the need for RF signal and modulation and demodulation. Compared with other isolation technologies (opto-coupler, iCoupler, OOK, etc.), it is a more essential and simple isolation signal transmission technology.

Jiangsu Runshi Technology Co., Ltd. is a high-tech semiconductor company focusing on the research and development and sales of high-performance, high-quality analog/mixed-signal integrated circuits.

The main products include precision operational amplifiers, high-speed operational amplifiers, general-purpose operational amplifiers, low-noise operational amplifiers, micro-power operational amplifiers, micro-power comparators, analog switches, power management, data converters, level conversion, voltage reference sources, etc., which are widely used in industrial control, medical equipment, security monitoring equipment, instrumentation, automotive electronics, smart homes, and consumer electronics.

RS8491/RS8492 is a single-channel/dual-channel operational amplifier with femtoampere-level input bias current launched by Jiangsu Runshi. The input bias current is no more than 100fA and the offset voltage is no more than 500uV. It is mainly used in chromatographs, mass spectrometers, coulomb meters and other instrumentation products.

Founded in September 2003, Chipsea Technology is a full signal chain integrated circuit design company integrating perception, computing, control and connection. It focuses on the research and development of high-precision ADC, high-reliability MCU, measurement algorithm and AIOT overall solution. Chip products are widely used in smart health, smart phones, consumer electronics, wearable devices, smart homes, industrial control, industrial measurement, automotive electronics, etc.

Xinhai Technology is headquartered in Shenzhen and has established subsidiaries in Hefei, Xi'an and Chengdu. It is a national high-tech enterprise and has been recognized by the Guangdong Provincial Department of Science and Technology as the "Guangdong Internet of Things Chip Development and Application Engineering Technology Research Center". It has built a reliability testing center, a health measurement laboratory, a perception laboratory, and an MCU laboratory. The company's annual R&D investment exceeds 20%, and R&D personnel account for more than 64%. Core members have more than 10 years of work experience. There are nearly 600 global patent assets, of which more than 246 have been authorized patents (including US patents).

Hangzhou Jinghua Microelectronics Co., Ltd. was established in 2005. It is committed to the design and sales of high-performance, high-quality mixed-signal integrated circuits. With its innovative design capabilities of high integration and high reliability and advanced quality assurance system, it provides users with one-stop professional integrated circuit and product application solution design.

Through years of technology accumulation and business development, Jinghua Microelectronics' general-purpose analog integrated circuits and series of dedicated SoC products have excellent performance and reliable quality. The main products include medical electronic chips, smart health scale chips, industrial control and instrument chips, smart sensing chips, etc., which are widely used in many fields such as medical health, pressure measurement, industrial control, instrumentation, smart home, etc.

Industrial control pressure /temperature sensor signal conditioning and transmission dedicated SoC chip (model: SD2322)

SD2322 is a signal conditioning circuit for resistive or voltage type sensor applications. The chip integrates two 24-bit ADCs, which can be used for main signal measurement and auxiliary temperature signal measurement respectively. The main ADC supports EMI detection to reduce the impact of interference signals; it integrates a 32-bit programmable MCU to support customer development and can realize online debugging through serial mode; it integrates a 16-bit DAC to support proportional voltage, absolute voltage, 4-20mA current and PWM output, and the analog output allows 10% over-range.

The chip has flexible serial interfaces such as SPI, UATR, I2C, and OWI. The OWI interface can communicate in a single line with the help of the power line without the need for additional lines. A variety of constant current sources and constant voltage source excitation outputs meet the measurement requirements of thermal resistors, thermocouples, bridge pressure sensors, etc. The 6.5V~40V wide power supply voltage is suitable for a variety of industrial field application requirements.

32-bit general-purpose microprocessor (SD93F115) with built-in 24-bit high-precision ADC

This chip is a 32-bit MCU SOC product with LCD driver and 24-bit high-precision ADC, providing 120KB Flash space for storing user programs.

Its technological innovations are reflected in:

1）拓展性地采用两组/两类模数转换器，显著扩展客户的应用场景范围。其中低速高精度Σ-Δ ADC的ENOB=18Bits@8sps (Gain = 128)。而高速中等精度的SAR ADC性能可达ENOB=12Bits@0.8Msps。

2) Adopt optimized RC oscillator circuit structure and normal temperature calibration technology to realize high-precision clock signal that complies with UART communication protocol (24MHz RC-OSC, deviation after calibration <±0.5%@normal temperature, deviation <±1.5%@-40℃~85℃).

3) The low-noise, high-input impedance preamplifier, combined with the company's own patented offset automatic correction function, can tolerate and correct abnormally large offset deviations of peripheral sensors, effectively reducing material losses for complete machine manufacturers.

4) Built-in EMI detection function module with patented technology can realize intelligent diagnosis and filtering of interference data, improving system reliability.

5）内置Chopper结构的高阶曲率补偿Bandgap电路，实现低噪声低温漂电压基准源，常温校准即可实现温漂系数小于10ppm/℃（@-40~85度范围内）。显著拓展了最终产品方案的使用温度范围，让产品更具竞争力。

6) Supports 8-electrode BIA body fat measurement, realizing resistance and phase angle measurement of human equivalent impedance, achieving more accurate analysis of human health parameters.

Linearin brings together the industry's top signal chain analog chip design team, senior technical application and product marketing talents, and focuses on high-end analog and mixed-signal IC chips for sensor signal conditioning and power current sensing applications.

Xianji integrated products include high-performance amplifiers, comparators, linear power supplies and reference voltages, switches and multiplexers, interface circuits, data converters, and AFE & ASSP dedicated chips and other analog and mixed signal chips. Benchmarking against similar products from TI and ADI in the United States, it provides innovative products and more optimized solutions for smart home, IoT, industrial control and smart factory (Industry 4.0), test and measurement, medical equipment, communication systems, automotive electronics and other markets.

High Performance, Low Cost General-Purpose Amplifier LTC8822

The LTC8822 has a 1.8V~5.5V power supply range, a dual-channel operational amplifier with up to 500kHz bandwidth, and a quiescent current as low as 6.6μA per channel. It maximizes the GBW to IQ ratio, effectively extending the battery life of portable products.

This product can not only meet the performance requirements, but also significantly reduce system power consumption, improve the DC accuracy of the application circuit with low offset and high precision, and integrate EMI filters. It is suitable for sensitive circuits up to 30MHz, and reduces the area of ​​user application circuit boards with a space-saving miniaturized package size, providing excellent cost-effectiveness for cost-conscious system applications.

High Precision Zero Drift Current Sense Amplifier LT199

The LT199 is an integrated current sense amplifier with integrated precision matched thin film resistors that can accurately monitor current signals from 0V to 26V on the power rail with low gain error, low temperature drift, and a maximum error of approximately 1.1%.

Juxun Semiconductor Technology (Shanghai) Co., Ltd. is a global high-tech chip design company that focuses on the R&D, design and sales management of high-performance, high-quality analog and mixed-signal products, and provides application solutions and technical support services.

The GS872X series devices are low noise, low voltage operational amplifiers suitable for a variety of applications. Based on the use of ordinary 0.35um CMOS process, the GS872X series has 11MHz unity gain bandwidth, 9V/µs slew rate, and good voltage and current noise performance.

Shanghai Taisi Microelectronics Co., Ltd. focuses on the research and development of various high-performance dedicated SoC chips related to Internet of Things applications. It has received strong support and investment from many well-known investment institutions including Shanghai Pudong State-owned Assets, and is committed to developing into a platform-based chip company.

The company's team has the ability to develop various types of system-level complex chips, and has shipped billions of chips. It has accumulated a large number of SoC chip solutions in the areas of signal chain, power supply, and radio frequency. Differentiated chip products will not only set industry benchmarks, but will also empower more IoT companies and better serve customer needs.

The TCAS series is an ultra-low power signal chain SoC based on ARM Cortex-M0 developed by Shanghai Taishi Microelectronics, integrating high-performance AFE. It is suitable for various small signal processing applications, various IoT terminal node applications, and seamlessly connects various types of sensors.

The TCAS series chip integrates a 32-bit ARM®Cortex®-M0 high-performance core with a maximum operating frequency of 48MHz, and has a built-in maximum of 64KBFLASH and 8KBBSRAM. It integrates a variety of analog front-end peripherals such as 24-bit high-precision Sigma-DeltaADC, 14-bit high-speed SAR ADC, ultra-low noise PGA with a maximum gain amplification of 1024 times, VDAC, IDAC, TIA, and op amps, as well as multiple digital interface peripherals such as UART, SPI, and I2C, and supports a variety of hardware encryption algorithms.

TaiSilicon has also developed an original Tinywork® technology (patent number: CN111427443A) to reduce the overall power consumption of the system, allowing peripherals to work independently and collaborate with each other in sleep mode without the intervention of the core processor. It can reduce the operating current in typical application scenarios by more than 80%, and supports ultra-low power standby and independent backup battery power supply.

The content of this article is compiled by Xin Shiye based on information provided by the company and is for communication and learning purposes only. If you have any questions, please contact us at info@gsi24.com.