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FXPQ3115BV Datasheet

I2C precision pressure sensor

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FXPQ3115BV
I2C precision pressure sensor with altimetry
Rev. 4 — 12 April 2018
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
Pressure: 20-bit measurement (Pascals)
20 to 110 kPa
Temperature: 12-bit measurement (°C)
–40 °C to 85 °C
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


NXP Semiconductors Electronic Components Datasheet

FXPQ3115BV Datasheet

I2C precision pressure sensor

No Preview Available !

NXP Semiconductors
FXPQ3115BV
I2C 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
None Single Dual Gauge Differential Absolute
FXPQ3115BV Tray
98ASA002260D ●
FXPQ3115BVT1 Tape and reel 98ASA002260D ●
Digital
interface
5 Block diagram
PRESSURE AND TEMPERATURE SENSOR
R1
D
A
R3
VG
B
R2
Rx
C
PRT
TEMPERATURE
SENSOR
MUX
GAIN
AAF
ADC
DIGITAL
SIGNAL
PROCESSING
DIGITAL
INTERFACE
SDL
SCL
INT1
INT2
VOLTAGE REFERENCES
AND REGULATORS
OSCILLATORS,
CLOCK
GENERATORS
TRIM LOGIC
GND CAP VDD VDDIO
Figure 1. Block diagram
SENSOR
CONFIGURATION
AND OUTPUT
DATA REGISTERS
aaa-024033
FXPQ3115BV_SDS
Short data sheet: technical data
All information provided in this document is subject to legal disclaimers.
Rev. 4 — 12 April 2018
© NXP B.V. 2018. All rights reserved.
2 / 15


Part Number FXPQ3115BV
Description I2C precision pressure sensor
Maker NXP
Total Page 3 Pages
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