NPS30xx – differential, digital, low pressure, ultra-low power sensors

NPS30xx – differential, digital, low pressure, ultra-low power sensors

NPS30xx is the last NXP family of digital differential pressure sensor in a tiny 4x5mm LGA package with ceramic lead frame. 

This complete family offers low pressure measurement (NPS3000VV = +/500Kpa, NPS3001DV = 0/1Kpa, NPS3002VV = +/-2Kpa, NPS3005DV = 0/5Kpa) combined with absolute accuracy down to 3Pa. It also offers an ultra-low power consumption down to 3.1uA in a measurement mode.

On top of using the serial SPI or I²C interface, user can also benefit from embedded interrupts to trigger wake up based on various configuration of pressure and/or temperature change – and therefore significantly reduce system power.

This family is targeting 2 different markets :

  1. Heating, Ventilation and  Air conditioning market, used as flow sensor when combined with a Venturi element or simple obstruction made by a filter or a fan. The very good offset stability and high accuracy are key parameters here. More specifically, wireless smart filter with a BLE connectivity is a new application that can be targeted thanks the  low power capability
  2. Medical market for e-inhaler, drug delivery and CPAP machine. The NPS30xx pressure sensor piezo resistive element is actually protected by a bio-compatible gel coating that will facilitate medical certification.  Again interrupt capabilities and low power performance together with very small form factor are the key criteria’s here.

Evaluation tools

  • Freedom board: FRDM-KE15Z
  • Shield board: FRDMSTBIDP300x
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Mike is the founder and editor of Electronics-Lab.com, an electronics engineering community/news and project sharing platform. He studied Electronics and Physics and enjoys everything that has moving electrons and fun. His interests lying on solar cells, microcontrollers and switchmode power supplies. Feel free to reach him for feedback, random tips or just to say hello :-)

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