± DESCRIPTION The ASDX Series is a Silicon Pressure Sensor offering either an I2C or SPI digital interface for reading pressure over the specified full scale pressure span and temperature range. The ASDX is fully calibrated and temperature compensated for sensor offset, sensitivity, temperature effects and non-linearity using an on-board Application Specific Integrated Circuit (ASIC). Calibrated output values for pressure are updated at approximately 1 kHz. The standard ASDX is calibrated over the temperature range of 0 °C to 85 °C [32 °F to 185 °F]. The sensor is characterized for operation from a single power supply of either 3.3 Vdc or 5.0 Vdc. FEATURES Output options: I2C- or SPI-compatible 12-bit digital Precision ASIC conditioning and temperature compensated over 0 °C to 85 °C [32 °F to 185 °F] temperature range Low operating voltage Absolute, differential and gage types Pressure ranges from 10 inches H20 to 100 psi Standard calibrations in inches H20, cm H20, psi, mbar, bar, kPa Total error band of ±2.0% of full scale span maximum RoHS compliant These sensors are available to measure absolute, differential and gage pressures. The absolute versions have an internal vacuum reference and an output value proportional to absolute pressure. Differential versions allow application of pressure to either side of the sensing diaphragm. Gage versions are referenced to atmospheric pressure and provide an output proportional to pressure variations from atmosphere. The ASDX Series sensors are intended for use with noncorrosive, non-ionic working fluids such as air and dry gases. They are designed and manufactured according to standards in ISO 9001. POTENTIAL APPLICATIONS Flow calibrators Ventilation and air flow monitors Gas flow instrumentation Sleep apnea monitoring and therapy equipment Barometry Pneumatic controls HVAC Table 1. Absolute Maximum Ratings1 Parameter Supply voltage (Vsupply) Voltage to any pin Digital clock frequency: I2 C SPI ESD susceptibility (human body model) Storage temperature Lead temperature (2 s to 4 s) External capacitance between Vsupply and ground2 Table 2. Operating Specifications Parameter Supply voltage: (Vsupply)3 3.3 Vdc 5.0 Vdc Min -0.3 -0.3 Max 6.0 Vsupply + 0.3 Unit Vdc Vdc 100 50 3 -50 [-58] 100 400 800 125 [257] 250 [482] 470 kHz kV °C [°F] °C [°F] nF Min. Typ. Max. Unit 3.0 4.75 3.34 5.04 3.6 5.25 Vdc Sensors are either 3.3 Vdc or 5.0 Vdc per the Order Guide (see Figure 1). Supply current Compensated temperature range5 Operating temperature range6 Overpressure7 Burst pressure8 Startup time (power up to data ready) Response time I2C or SPI voltage level low I2C or SPI voltage level high Pull-up on SDA and SCL (I2C output only) Total error band9 Output resolution Table 3. Environmental Specifications Parameter Humidity Vibration Shock Life Table 4. Wetted Materials11 Parameter Covers Adhesives Electronic components 2.0 0 [32] -20 [-4] 0.8 1 12 3.5 5.0 85 [185] 105 [221] 2X operating pressure range minimum 3X operating pressure range minimum 2.8 7.3 0.46 0.2 2.0 - mA °C [°F] °C [°F] ms ms Vsupply Vsupply kOhm %FSS10 bits Characteristic 0% to 95% RH non-condensing 10 G at 20 Hz to 2000 Hz 100 G for 11 ms 1 million cycles minimum Port 1 (Pressure Port)12 glass-filled PBT silicone silicon and glass Port 2 (Reference Port)12 glass-filled PBT silicone and epoxy silicon, glass, and gold Notes: 1. Absolute maximum ratings are the extreme limits that the device will withstand without damage to the device. 2. An external bypass capacitor is required across the supply voltage (Pins 6 and 3 – see Figure 4) as close to the sensor supply pin as possible for correct sensor operation. 3. Ratiometricity of the sensor (the ability of the output to scale to the input voltage) is achieved within the specified operating voltage for each option. Other custom supply voltages are available, please contact Honeywell Customer Service. 4. The sensor is not reverse polarity protected. Incorrect application of excitation voltage or ground to the wrong pin may cause electrical failure. 5. The compensated temperature range is the temperature range (or ranges) over which the sensor will produce an output proportional to pressure within the specified performance limits. 6. The operating temperature range is the temperature range over which the sensor will produce an output proportional to pressure but may not remain within the specified performance limits. 7. Overpressure is the maximum pressure which may safely be applied to the product for it to remain in specification once pressure is returned to the operating pressure range. Exposure to higher pressures may cause permanent damage to the product. 8. Burst pressure is the maximum pressure that may be applied to any port of the product without causing escape of pressure media. Product should not be expected to function after exposure to any pressure beyond the burst pressure. 9. Total error band is the maximum deviation in output from ideal transfer function over the entire compensated temperature and pressure range. Includes all errors due to offset, full scale span, pressure non-linearity, pressure hysteresis, repeatability, thermal effect on offset, thermal effect on span and thermal hysteresis. Specification units are in percent of full scale span (%FSS). 10. Full scale span (FSS) is the algebraic difference between the output signal measured at the maximum (Pmax.) and minimum (Pmin.) limits of the pressure range. 11. Consult Honeywell Customer Service for detailed material information. 12. For AC pressure port configuration, the “pressure” and “reference” ports are reversed. 2 www.honeywell.com/sensing Figure 1. Nomenclature and Order Guide Package Selection13 ASDX __ Calibration Selection X _____ _ _ _ Series Power Supply Voltage 3 = 3.3 Vdc 5 = 5.0 Vdc Pressure Port Transfer Function Limits14 AV = Axial port on top, vented cover on bottom A = 10% to 90% calibration B = 5% to 95% calibration Output Type15 S = SPI 2 2 = I C, Address 0x28 2 3 = I C, Address 0x38 2 4 = I C, Address 0x48 2 5 = I C, Address 0x58 2 6 = I C, Address 0x68 RR = Radial port on top, radial port on bottom 2 7 = I C, Address 0x78 Pressure Range16, 17, 18 Gage AC = Axial port, sealed cover (commonly used for absolute) RV = Radial port, single Future Option Differential Absolute 010NG = 10 in H2O 005ND = ±5 in H2O 010ND = ±10 in H2O - 025CG = 25 cm H2O 015CD = ±15 cm H2O 025CD = ±25 cm H2O - 001PG = 1 psi 005PG = 5 psi 015PG = 15 psi 030PG = 30 psi 100PG = 100 psi 001PD = ±1 psi 005PD = ±5 psi 015PD = ±15 psi 030PD = ±30 psi - 015PA = 15 psi 030PA = 30 psi 100PA = 100 psi 025MG = 25 mbar 050MG = 50 mbar 100MG = 100 mbar 200MG = 200 mbar 500MG = 500 mbar 015MD = ±15 mbar 025MD = ±25 mbar 050MD = ±50 mbar 100MD = ±100 mbar 200MD = ±200 mbar 500MD = ±500 mbar - 001BG = 1 bar 002BG = 2 bar 007BG = 7 bar 001BD = ±1 bar 002BD = ±2 bar - 001BA = 1 bar 002BA = 2 bar 007BA = 7 bar 003KG = 3 kPa 004KG = 4 kPa 005KG = 5 kPa 010KG = 10 kPa 020KG = 20 kPa 050KG = 50 kPa 100KG = 100 kPa 200KG = 200 kPa 700KG = 700 kPa 003KD = ±3 kPa 004KD = ±4 kPa 005KD = ±5 kPa 010KD = ±10 kPa 020KD = ±20 kPa 050KD = ±50 kPa 100KD = ±100 kPa 200KD = ±200 kPa - 100KA = 100 kPa 200KA = 200 kPa 700KA = 700 kPa Notes: 13. Other package combinations are possible, please contact Honeywell Customer Service. 14. The transfer function limits define the output of the sensor at a given pressure input. By specifying the output signal at the maximum (Pmax.) and minimum (Pmin.) limits of the pressure range, the complete transfer curve for the sensor is defined. See Figure 2 for a graphical representation of each calibration. For the 12-bit digital output, Table 6 provides the output of the sensor at significant percentages. These outputs are valid at the rated input voltage of the sensor. 15. The output type defines which communication protocol the sensor uses to communicate. Available protocols are I 2C or half duplex SPI (sensor acts only as a slave). This communication protocol is not field selectable, and must be defined when ordering the sensor. 16. Custom pressure ranges are available, please contact Honeywell Customer Service. 17. The pressure units (inches H20, cm H20, psi, mbar, bar, kPa) define the units used during calibration and in the application. 18. See Table 5 for an explanation of sensor types. Honeywell Sensing and Control 3 Table 5. Sensor Types Type Absolute Gage Differential Description Output is proportional to difference between applied pressure and built-in reference to vacuum (zero pressure). Output is proportional to difference between applied pressure and atmospheric (ambient) pressure. Output is proportional to difference between pressure applied to each of the pressure ports (Port 1 – Port 2). Figure 2. Transfer Functions and Limits A Calibration, 10% to 90% B Calibration, 5% to 95% Table 6. Sensor Output at Significant Percentages % Output Digital Counts (dec) 0% 0 5% 819 10% 1638 50% 8192 90% 14746 95% 15565 100% 16383 Figure 3. Completed Catalog Listing Example ASDXAVX001PG2A3: AV pressure port, 1 psi gage, I2C output (Address 0x28), 10% to 90% calibration at 3.3 Vdc operation. 4 www.honeywell.com/sensing Digital Counts (hex) 0x0000 0x0333 0x0666 0x2000 0x399A 0x3CCD 0x3FFF ASDXAVX001PG2A3 Output vs Pressure Figure 4. Dimensional Drawings (For reference only: mm [in].) RR Package (Legacy D4) AV Package (Legacy G2) RV Package AC Package (Legacy A2) Table 7. Pinout Pin 1 Definition SDA I2C Type digital I/O 2 SCL digital input 3 4 GND N/C supply not used 5 SS digital output 6 7 Vsupply N/C supply not used 8 N/C not used Description serial bidirectional data; data is clocked in or out on clock edge of SCL serial clock input; used to clock data on SDA power supply ground do not connect in the application interrupt signal (conversion complete output) power supply source do not connect in the application do not connect in the application Pin 1 Definition MISO SPI Type digital output 2 SCK digital input 3 4 GND N/C supply not used 5 SS digital input 6 7 Vsupply N/C supply not used 8 N/C not used Description “Master In Slave Out” - serial output data; data is clocked out on clock edge of SCK serial clock input; used to clock data on MISO power supply ground do not connect in the application slave select power supply source do not connect in the application do not connect in the application Honeywell Sensing and Control 5 WARNING WARNING PERSONAL INJURY DO NOT USE these products as safety or emergency stop devices or in any other application where failure of the product could result in personal injury. Failure to comply with these instructions could result in death or serious injury. WARRANTY/REMEDY Honeywell warrants goods of its manufacture as being free of defective materials and faulty workmanship. Honeywell’s standard product warranty applies unless agreed to otherwise by Honeywell in writing; please refer to your order acknowledgement or consult your local sales office for specific warranty details. If warranted goods are returned to Honeywell during the period of coverage, Honeywell will repair or replace, at its option, without charge those items it finds defective. The foregoing is buyer’s sole remedy and is in lieu of all other warranties, expressed or implied, including those of merchantability and fitness for a particular purpose. In no event shall Honeywell be liable for consequential, special, or indirect damages. MISUSE OF DOCUMENTATION The information presented in this product sheet is for reference only. Do not use this document as a product installation guide. Complete installation, operation, and maintenance information is provided in the instructions supplied with each product. Failure to comply with these instructions could result in death or serious injury. SALES AND SERVICE Honeywell serves its customers through a worldwide network of sales offices, representatives and distributors. For application assistance, current specifications, pricing or name of the nearest Authorized Distributor, contact your local sales office or: E-mail: [email protected] Internet: www.honeywell.com/sensing Phone and Fax: While we provide application assistance personally, through our literature and the Honeywell web site, it is up to the customer to determine the suitability of the product in the application. 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