TruStability™ Board Mount Pressure Sensors RSC …

1 TruStability Board Mount Pressure Sensors 32321348. RSC Series High Resolution, High Accuracy, Compensated Issue B. mbar to 10 bar | 160 Pa to 1 MPa | inH2O to 150 psi 24-bit Digital SPI-Compatible Output Datasheet FEATURES. Pressure range: mbar to 10 bar | 160 Pa to 1 MPa |. inH2O to 150 psi; absolute range 1 bar to 8 bar | 15 psi to 150 psi Pressure types: Absolute: internal vacuum reference and an output value proportional to absolute Pressure ; Gage: referenced to atmospheric Pressure and provide an output proportional to Pressure variations from atmosphere;. Differential: allows measurement of Pressure between the two Pressure ports Total Error Band: As low as %FSS depending on Pressure range (after auto zero). Accuracy: %FSS BFSL (Full Scale Span Best Fit Straight Line). Compensated temperature range: -40 C to 85 C [-40 F to 185 F].

2 Power consumption: Less than 10 mW, typ. Size: Miniature 10 mm x 12,5 mm [ in x in] package Output: 24-bit digital SPI-compatible DESCRIPTION Meets IPC/JEDEC Moisture Sensitivity Level 1. The RSC Series is a piezoresistive silicon Pressure sensor requirements offering a digital output for reading Pressure over the speci ed full scale Pressure span and temperature range. It is calibrated DIFFERENTIATION. and temperature compensated for sensor offset, sensitivity, Industry-leading long-term stability: Minimizes system temperature effects, and non-linearity using a 24-bit analog-to- calibration needs and signi cantly reduces downtime. digital converter with integrated EEPROM. Pressure data may Industry-leading accuracy: Reduces software to correct be acquired at rates between 20 and 2000 samples per second system inaccuracies, which minimizes design time, helps over an SPI interface.

3 It is intended for use with non-corrosive, improve ef ciency, and often simpli es development. non-ionic gases, such as air and other dry gases, designed and Industry-leading exibility: Modular design with many manufactured according to ISO 9001 standards, and is REACH package styles and options simplify integration. and RoHS compliant. Total Error Band: Provides true performance over the compensated temperature range, which eliminates the VALUE TO CUSTOMERS need to test and calibrate every sensor, thereby reducing Enhances performance: Output accelerates performance manufacturing cost. Improves system accuracy and offers through reduced conversion requirements and direct ease of sensor interchangeability due to minimal part-to-part interface to microprocessors. Proprietary Honeywell variation (see Figure 1 on page 3).

4 Technology combines high sensitivity with high burst and over Pressure while providing industry leading stability POTENTIAL APPLICATIONS. (performance factors dif cult to achieve in the same sensor), Medical: Air ow monitors, anesthesia machines, blood providing exibility in implementation and minimizing analysis machines, gas chromatography, gas ow requirements for protecting the sensor without sacri cing instrumentation, hospital room air Pressure , kidney dialysis ability to sense very small changes in Pressure . machines, nebulizers, pneumatic controls, respiratory Cost-effective, high volume solution with a variety of options. machines, sleep apnea equipment, spirometers, ventilators Enhances reliability: High burst pressures promote system Industrial: Barometry, drones, ow calibrators, gas reliability, minimize downtime, and can simplify design.

5 Chromatography, gas ow instrumentation, HVAC clogged High working pressures allow ultra-low Sensors to be used lter detection, HVAC systems, HVAC transmitters, indoor continuously above the calibrated Pressure range. air quality, life sciences, pneumatic control, VAV (Variable Air Easy to design in: Package is small when compared to many Volume) control, weather balloons similar Sensors , occupying less area on the PCB. Port and housing options simplify integration. Wide Pressure range PORTFOLIO. simplifies use. Honeywell offers a variety of Board Mount Pressure Sensors Meets IPC/JEDEC Moisture Sensitivity Level for potential use in medical and industrial applications. Our 1 requirements: Allows avoidance of thermal and mechanical categories of Pressure sensor measurement include absolute, damage during solder re ow attachment and/or repair that differential, gage or vacuum gage, with unampli ed or ampli ed lesser rated Sensors would incur, allows unlimited oor life Sensors and covering a wide Pressure range.

6 When stored as speci ed (simplifying storage and reducing scrap), eliminates lengthy bakes prior to re ow, and allows for lean manufacturing due to stability and usability shortly after re ow. Energy efficient: Reduces system power requirements and enables extended battery life. Safety and Productivity Solutions TruStability Board Mount Pressure Sensors RSC Series Table of Contents General Speci cations .. 3-4. Nomenclature and Order Guide .. 5. Pressure Range Speci cations mbar to 10 bar .. 6. 160 Pa to 1 MPa .. 7. inH2O to 150 psi .. 8. Dimensional Drawings DIP Packages .. 9-11. SMT Packages .. 11-13. Recommended PCB Pad Layouts .. 13. Pinout .. 14. Recommended Circuit .. 14. System Overview .. 15. Major System Blocks .. 15. High-level Operating Sequence .. 15. Compensation Mathematics.. 16. System Initialization EEPROM.

7 17. EEPROM Contents .. 17-18. EEPROM Comunication .. 19-20. System Operation ADC .. 20. ADC Communications and Initialization .. 21. Programming the Data Rate and Pressure /Temperature Modes .. 21. ADC Reset Command .. 21. ADC Programming Sequence Power Up .. 22. ADC Programming and Read Sequence Temperature Reading .. 22-23. ADC Programming and Read Sequence Pressure Reading .. 23. Example Software .. 24. Data Types .. 24. Function Descriptions .. 24. Checksum Calculation .. 25. Compensation Sequence .. 25-26. Constraints .. 26. Sensor Offset Zero Correction Procedure .. 26. Additional Information.. 27. 2 TruStability Board Mount Pressure Sensors RSC Series Figure 1. TEB Components for TruStability Board Mount Pressure Sensors All Possible Errors Offset Full Scale Span Pressure Non-Linearity Accuracy Total Pressure Hysteresis Error BFSL.

8 Pressure Non-Repeatability Band Thermal Effect on Offset Thermal Effect on Span Thermal Hysteresis Table 1. Absolute Maximum Ratings1. Characteristic Min. Max. Unit Supply voltage (Vsupply) Vdc Voltage on any pin Vsupply + V. Digital interface clock frequency 5 MHz ESD susceptibility (human body model) 2 kV. Storage temperature -40 [-40] 85 [185] C [ F]. Soldering time and temperature: lead solder temperature (DIP) 4 s max. at 250 C [482 F]. peak reflow temperature (SMT) 15 s max. at 250 C [482 F]. 1. Absolute maximum ratings are the extreme limits the device will withstand without damage. Table 2. Environmental Specifications Characteristic Parameter Humidity (gases only) 0% to 95% RH, non-condensing Vibration 15 g, 10 Hz to 2 Hz Shock 100 g, 6 ms duration Life1 1 million Pressure cycles minimum Moisture Sensitivity Level 1.

9 Solder reflow (unlimited shelf life when stored at <30 C/85 % RH). 1. Life may vary depending on specific application in which the sensor is utilized. Table 3. Wetted Materials1. Component Port 1 ( Pressure Port) Port 2 (Reference Port). Ports and covers high temperature polyamide high temperature polyamide Substrate alumina ceramic alumina ceramic Adhesives epoxy, silicone epoxy, silicone Electronic components plastic, silicon, glass, solder silicon, glass, gold 1. Contact Honeywell Customer Service for detailed material information. Table 4. Sensor Pressure Types Pressure Type Description Absolute Output is proportional to the difference between applied Pressure and a built-in vacuum reference. Differential Output is proportional to the difference between the pressures applied to each port (Port 1 Port 2). Gage Output is proportional to the difference between applied Pressure and atmospheric (ambient) Pressure .

10 Safety and Productivity Solutions 3. TruStability Board Mount Pressure Sensors RSC Series Table 5. Digital Operating Specifications Characteristic Min. Typ. Max. Unit Supply voltage (Vsupply):1, 2, 3. Pressure ranges >60 mbar | 6 kPa | 1 psi: Vdc Vdc Vdc Pressure ranges <40 mbar | 4 kPa | 20 inH2O: Vdc Vdc Supply current: Vdc: standby mode . active mode mA. Vdc: standby mode . active mode . Operating temperature range4 -40 [-40] 85 [185] C [ F]. Compensated temperature range:5. medical 0 [32] 50 [122]. C [ F]. industrial -20 [-4] 85 [185]. extended -40 [-40] 85 [185]. Startup time (power up to data ready) ms 20, 40, 45, 90, 175, 180, 330, 350, 600, 660, samples per Data rate 1000, 1200, 2000 second SPI voltage level: low 20 %Vsupply high 80 . Pull up on MISO, SCLK, CS_ADC, CS_EE, 1 kOhm MOSI. Accuracy6 %FSS BFSL6. Orientation sensitivity ( 1 g):7, 9.