company blog about NXP MPX5700ASX 0 To 700 kPa Integrated Piezoresistive Transducer

NXP MPX5700ASX 0 To 700 kPa Integrated Piezoresistive Transducer

In today's rapidly evolving landscape of industrial automation, automotive electronics, and smart devices, high-precision pressure sensors have become indispensable core components in various control systems. As a leading distributor of electronic components, Shenzhen Mingjiada Electronics Co., Ltd. has been specialising in supplying the NXP MPX5700ASX series of piezoresistive pressure sensors, providing customers with precise pressure monitoring solutions within the range of 0 kPa to 700 kPa.

Technical Overview of the NXP MPX5700ASX Pressure Sensor

The MPX5700ASX piezoresistive sensor is a pressure sensor that employs advanced single-crystal silicon pressure-sensitive technology, suitable for a wide range of applications, particularly systems equipped with microcontrollers (MCUs) or microprocessors (MPUs) featuring A/D inputs. The MPX5700ASX single-chip sensor employs advanced microfabrication technology, thin-film metallisation processes, and bipolar processing techniques to provide a precise high-level analogue output signal proportional to the applied pressure.

The MPX5700ASX boasts outstanding core parameters:

Pressure range: 0 kPa to 700 kPa, covering most industrial and medium-to-low-pressure application scenarios

Output characteristics: Analog voltage output, range 0.2 V to 4.7 V, linearly proportional to pressure, facilitating direct connection to the A/D input port of a microcontroller

Power supply requirements: Wide voltage supply from 4.75V to 5.25V, with a maximum operating current of only 10mA, suitable for embedded system integration

Accuracy specifications: Accuracy as high as ±2.5% across the entire temperature range, with smaller errors within the 0°C to 85°C range

Temperature adaptability: Operating temperature range from -40°C to 125°C, suitable for harsh environments

The MPX5700ASX is packaged in a 6-pin SIP module with a robust and durable structure. The sensor features a male 4.93mm pressure port with a barb, facilitating installation and connection to pressure tubing. It incorporates an internal temperature compensation circuit to effectively counteract the impact of environmental temperature changes on measurement accuracy, ensuring stable performance output under various operating conditions.

Notably, the MPX5700ASX can withstand a maximum pressure of 2800 kPa (406.11 PSI), offering high overload protection capability to handle potential pressure spikes in the system.

Industry Applications of the MPX5700ASX

The NXP MPX5700ASX pressure sensor, with its outstanding performance metrics and reliable quality, has found widespread application across multiple industrial sectors. This MPX5700ASX sensor is particularly suitable for systems using microcontrollers or microprocessors with A/D inputs, providing an ideal solution for various pressure monitoring applications.

In the field of industrial automation control, the MPX5700ASX is commonly used for:

Pneumatic and hydraulic system pressure monitoring: Used for pressure detection in pneumatic circuits of factory automation equipment, robotic arms, etc., to ensure the system operates within safe pressure limits

Process control and monitoring: In industries such as chemicals, petroleum, and water treatment, monitoring the pressure status of pipelines and containers to prevent overpressure or leakage accidents

Pump and compressor control: Adjusting equipment operating conditions through real-time pressure feedback to achieve energy savings and optimised control

In automotive electronics applications, the MPX5700ASX's wide temperature range (-40°C to 125°C) enables it to withstand harsh environmental conditions such as engine compartments. Typical applications include:

Engine management systems: Monitoring intake manifold pressure (MAP sensor) to provide critical parameters for fuel injection volume calculations

Brake system monitoring: Detecting hydraulic brake line pressure to work in conjunction with ABS/ESP systems

New energy vehicle applications: Used for fuel cell system pressure monitoring, battery pack cooling system pressure detection, etc.

Medical devices also widely adopt the MPX5700ASX for precise pressure measurement:

Ventilators and anaesthesia machines: Monitoring patient airway pressure to ensure safe and effective treatment

Infusion pumps and dialysis machines: Detecting fluid line pressure to prevent blockages or leaks

Medical gas systems: Monitoring the delivery pressure of medical gases such as oxygen and nitrogen

In the consumer electronics and home appliance sectors, this sensor also has a wide range of applications:

Smart home systems: Safety applications such as water pressure monitoring and gas pressure detection

White goods: Water level sensing in washing machines and water pressure detection in dishwashers

Fitness equipment: Monitoring of air pressure suspension systems in treadmills

Notably, the MPX5700ASX's analogue voltage output feature enables seamless integration with the analogue input interfaces of most microcontrollers and PLC systems, significantly simplifying system design complexity. Additionally, its temperature compensation function ensures accurate measurement results across varying environmental temperatures, reducing the need for system calibration. These features make the MPX5700ASX a top choice for engineers designing pressure detection systems.