Datasheet > FXPQ3115BV

FXPQ3115BV

更新时间： 2024-11-12 02:52:35

品牌	Logo	应用领域
恩智浦 - NXP		/
页数	文件大小	规格书
14页	523K
描述
I2C precision pressure sensor with altimetry

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FXPQ3115BV 数据手册

FXPQ3115BV

I²C precision pressure sensor with altimetry

Rev. 1 — 9 October 2017

Short data sheet: technical data

1 General description

The FXPQ3115BV is a compact, piezoresistive, absolute pressure sensor with an I²C

digital interface. FXPQ3115BV has a wide operating range of 20 kPa to 110 kPa. This

sensor is ideal for inhalers, continuous positive airway pressure (CPAP) masks or

other medical devices coming in contact with a patient's airway. The MEMS and ASIC

die are coated with a biomedically-approved gel. The gel is a nontoxic, nonallergenic

elastomer which meets all United States Pharmacopeia (USP) biological testing class

VI requirements. The gel properties allow uniform pressure transmission to the MEMS

diaphragm.

A high resolution ADC provides fully compensated and digitized outputs for pressure in

Pascals and temperature in °C. The compensated output is available as either barometric

pressure in Pascals or as an altitude in meters. The internal processing in FXPQ3115BV

removes compensation and unit conversion load from the system MCU, simplifying

system design.

FXPQ3115BV's advanced ASIC has multiple user programmable modes such as power

saving, interrupt and autonomous data acquisition modes, including programmed

acquisition cycle timing, and poll-only modes. Typical active supply current is 40 μA per

measurement-second.

2 Features and benefits

• Operating range: 20 kPa to 110 kPa absolute pressure

• Calibrated range: 50 kPa to 110 kPa absolute pressure

• Calibrated temperature output: −40 °C to 85 °C

• I²C digital output interface

• Fully compensated internally

• Precision ADC resulting in 1.5 Pa of effective resolution

• Direct reading

• Programmable interrupts

• Autonomous data acquisition

– Embedded 32-sample FIFO

– Data logging up to 12 days using the FIFO

– One-second to nine-hour data acquisition rate

• 1.95 V to 3.6 V supply voltage, internally regulated

• 1.6 V to 3.6 V digital interface supply voltage

• Operating temperature from −40 °C to +85 °C

– Pressure: 20-bit measurement (Pascals)

–

20 to 110 kPa

– Temperature: 12-bit measurement (°C)

–40 °C to 85 °C

–

12 3 4 5 6 7...14

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