CP Series

Dual pressure sensor for CPAP, BiPAP and APAP combining differential and gauge pressure sensors in one device

The CP Series sensor modules for positive airway pressure applications leverage the advanced NimbleSense™ architecture, offering exceptional dynamic range to deliver the industry’s highest-performing pressure sensing solutions for CPAP, BiPAP, and APAP devices. By integrating both differential and gauge pressure sensors within a single package, the CP Series supports four programmable pressure ranges for each embedded sensor, enhancing versatility.

This series offers the most advanced sensor integration by combining two cutting-edge piezoresistive sensing elements with integrated amplification, ADC, DSP, and processor intelligence, streamlining the integration process for device manufacturers. Utilizing floating-point technology and sophisticated digital processing, the CP Series delivers highly precise digital outputs, ensuring maximum accuracy and simplifying system development.

Available in both 3-port and 4-port configurations, the CP Series provides design flexibility while optimizing performance, reliability, and cost-effectiveness for the demanding positive airway pressure market.

CPAP Application Video

CP Series Benefits Summary

ProductPressure PortsPossible ConfigurationsClosed Loop ControlOverpressure IndicatorAdvanced Digital Filtering
CP201-SM04
CP201-SM04
364
Optional
CP202-SM04
CP202-SM04
364
Yes
Yes
Optional
CP301-SM06
CP301-SM06
464
Optional
CP302-SM06
CP302-SM06
464
Yes
Yes
Optional
Evaluation hardware and accessories
EB02
EB02
Evaluation board EB02 supports CP201 and CP301 sensors. CP202 and CP302 require a custom development platform.
KP-ROR
KP-ROR
Right angle adapters for reducing total Z-height. KP-ROR includes o-rings for airtight seal (KP-RAR excludes o-rings).
ProductSensorMulti-Range Full Scale Pressure Limits (FSS)Number of Pressure RangesUpdate RateBW Corner FrequencyAccuracy (%)Long-Term StabilityShort-Term Error BandTotal Error Band
CP201-SM04Differential±250 Pa to ±2500 Pa42 ms25 – 250 Hz0.05%2 Pa1.25 Pa4 Pa
Gauge±2 kPa to ±6 kPa42 ms25 – 250 Hz0.05%12 Pa6 Pa10 Pa
CP202-SM04Differential±250 Pa to ±2500 Pa42 ms25 – 250 Hz0.05%2 Pa1.25 Pa4 Pa
Gauge±2 kPa to ±6 kPa42 ms25 – 250 Hz0.05%12 Pa6 Pa10 Pa
CP301-SM06Differential±250 Pa to ±2500 Pa42 ms25 – 250 Hz0.05%2 Pa1.25 Pa4 Pa
Gauge±2 kPa to ±6 kPa42 ms25 – 250 Hz0.05%12 Pa6 Pa10 Pa
CP302-SM06Differential±250 Pa to ±2500 Pa42 ms25 – 250 Hz0.05%2 Pa1.25 Pa4 Pa
Gauge±2 kPa to ±6 kPa42 ms25 – 250 Hz0.05%12 Pa6 Pa10 Pa

Common Device Features: 3.3V supply
Long-Term Stability is measured after first 12 months
Short-Term Error Band (STEB) is measured over 24 hours, after auto-zero

Common Specifications

  • Combines separate differential and gauge sensors in one device
  • 64 possible configurations per device
  • Optional advanced digital filtering
  • Standard I2C and SPI interfaces
  • Available in shared and dedicated port configurations for maximum flexiblity
  • Temperature-compensated from 0°C to 50°C
  • Supply voltage compensation
  • Fully integrated compensation math
Evaluation SoftwareVersionDateDownload
PRT-0279 EB02 Evaluation SoftwareEJanuary 2024
Software Download
PRT-0143 EB01 Evaluation SoftwareEFebruary 2024
Software Download
Drawings and CAD FilesVersionDateDownload
SM04 Package for CP201 and CP202 Sensors (IGS and STEP files)AMarch 2023
ZIP file Download
SM06 Package for CP301 and CP302 Sensors (IGS and STEP files)AMarch 2023
ZIP file Download
KP-ROR Package for Right Angle Adapters (STEP file)AFebruary 2024
ZIP file Download

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CP Series

Target Markets

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