FXPQ3115BV 2 I C precision pressure sensor with altimetry Rev. 5 28 May 2020 Product data sheet 1 General description 2 The FXPQ3115BV is a compact, piezoresistive, absolute pressure sensor with an I C 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 A per measurement-second. 2 Features and benefits Operating range: 20 kPa to 110 kPa absolute pressure Programmable interrupts Calibrated range: 50 kPa to 110 kPa absolute pressure Autonomous data acquisition Calibrated temperature output: 40 C to 85 C Embedded 32-sample FIFO 2 I C digital output interface Data logging up to 12 days using the FIFO Fully compensated internally One-second to nine-hour data acquisition rate Precision ADC resulting in 1.5 Pa of effective resolution 1.95 V to 3.6 V supply voltage, internally regulated Direct reading 1.6 V to 3.6 V digital interface supply voltage Pressure: 20-bit measurement (Pascals) Operating temperature from 40 C to +85 C 20 kPa to 110 kPa Temperature: 12-bit measurement (C) 40 C to 85 CNXP Semiconductors FXPQ3115BV 2 I C precision pressure sensor with altimetry 3 Applications Inhalers/nebulizers Medical tablets Health activity monitors Oxygen concentrators CPAP machine and mask Spyrometry 4 Ordering information Table 1.Ordering information Device number Shipping Package Number of ports Pressure Type Digital interface None Single Dual Gauge Differential Absolute FXPQ3115BV Tray 98ASA002260D FXPQ3115BVT1 Tape and reel 98ASA002260D 5 Block diagram PRESSURE AND TEMPERATURE SENSOR A R 1 R 3 D V B G DIGITAL R R 2 x MUX GAIN ADC SIGNAL SDL AAF C PROCESSING PRT SCL DIGITAL INT1 INTERFACE TEMPERATURE SENSOR INT2 SENSOR OSCILLATORS, VOLTAGE REFERENCES CONFIGURATION CLOCK TRIM LOGIC AND OUTPUT AND REGULATORS GENERATORS DATA REGISTERS GND CAP V V DD DDIO aaa-024033 Figure 1.Block diagram FXPQ3115BV All information provided in this document is subject to legal disclaimers. NXP B.V. 2020. All rights reserved. Product data sheet Rev. 5 28 May 2020 2 / 51