In the global fight against the epidemic, ventilators have become one of the most important medical devices for the treatment of critically ill patients with neocoronary pneumonia. As an effective means that can artificially replace the function of autonomous ventilation, ventilators have been commonly used in modern clinical medicine in the fields of critical care, emergency medicine, anesthesia medicine and home health care. As people's health awareness continues to strengthen, driving the rapid development of home medical devices, home ventilators can also help snoring people to relieve the symptoms of breathing difficulties and improve sleep quality. 

The ventilator mainly determines the patient's breathing status by detecting the change in the difference between the gas pressure at the ventilator end and the external pressure, so as to achieve the role of assisted breathing. A high-precision, high-reliability and high-stability pressure sensor is often indispensable inside it. 

July 5, 2022-Naxion Micro announces the launch of a gauge pressure sensor, the NSPGS5 series. The series uses a CMOS mixed signal conditioning chip inside the series to amplify, calibrate and compensate the output of the MEMS core, which can convert pressure signals from -10kPa to +10kPa into analog signals with customizable output range (0~5V) as well as digital I2C signals. Meanwhile, the built-in MEMS differential pressure core is based on high sensitivity single crystal silicon piezoresistive effect and designed by advanced silicon silicon bonding CSOI MEMS micromachining process, the accuracy and stability of the MEMS core is better than 1%FS over its life cycle. 

Figure: NSPGS5 series of Naxin Micro gauge pressure sensors 

The series products are mainly used in medical fields such as ventilators, oxygen generators, anesthesia machines, lung function testers, blood pressure meters and biosafety cabinets; meanwhile, they are also useful in the fields of gas flow detection, pressure switches and industrial control. 

The main features of the products are as follows. 

High precision and low power consumption: highly linear, good stability, no need for calibration, 100% temperature compensation, factory accuracy better than ±1% F.S., life cycle accuracy better than ±2% F.S., full temperature zone operating current less than 3.5mA. 

Multiple output methods: Support analog absolute output as well as digital I2C (under development) output, suitable for a variety of application requirements, simple and convenient, good portability. 

Customized products: -10kPa~10kPa range can be customized, output mode (analog/I2C) can be customized, support a variety of pressure application scenarios, high flexibility. 

Wide temperature range: -20℃~85℃ operating temperature, 0℃~70℃ compensation temperature. The extremely wide temperature range can help the ventilator to be suitable for various types of harsh working environments, while the wider temperature compensation range can also ensure the stability of the product and greatly reduce the impact of temperature changes on the product function. 

Single-nozzle package: The single-nozzle SOIC-16 package supports frontal air intake with an air vent on the back, saving as much space as possible in the respirator's structural design. With high reliability and strain relief characteristics, it is easy for customers to solder and use the product while ensuring excellent performance and reliability. 

As a high-performance, high-reliability analog and mixed-signal chip design company, Naximicro not only has self-developed MEMS design and packaging technology and automated batch calibration technology for multiple pressure and temperature points, but also can provide better delivery to customers to reduce supply chain risks. In addition, Naximicro can also provide customized co-packaging products according to customer needs to meet the application requirements of different scenarios.