ASDX Series Silicon Pressure Sensors Low Pressure and Ultra-Low Pressure Analog Output ±2% Total Error Band, DIP, 10 inches H20 to 100 psi DESCRIPTION The ASDX Series is a Silicon Pressure Sensor offering a ratiometric analog output 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. 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. FEATURES POTENTIAL APPLICATIONS • Ratiometric 12-bit analog output • Flow calibrators • Precision ASIC conditioning and temperature • Ventilation and air flow monitors compensated over 0 °C to 85 °C [32 °F to 185 °F] • Gas flow instrumentation temperature range • Sleep apnea monitoring and therapy equipment • Low operating voltage • Barometry • Absolute, differential and gage types • Pneumatic controls • Pressure ranges from 10 inches H20 to 100 psi • HVAC • Standard calibrations in inches H20, cm H20, psi, mbar, bar, kPa • Total error band of ±2.0% of full scale span maximum • RoHS compliant ASDX Series Silicon Pressure Sensors 1 Table 1. Absolute Maximum Ratings Parameter Supply voltage (Vsupply) Voltage to any pin ESD susceptibility (human body model) Storage temperature Lead temperature (2 s to 4 s) 2 External capacitance between Vsupply and ground Min. -0.3 -0.3 3 -50 [-58] 100 Table 2. Operating Specifications Parameter 3 Supply voltage (Vsupply) 3.3 Vdc 5.0 Vdc Max. 6.0 Vsupply + 0.3 125  250  470 Min. Typ. 3.0 4.75 3.3 4 5.0 4 Unit Vdc Vdc kV °C [°F] °C [°F] nF Max. Unit 3.6 5.25 Vdc Sensors are either 3.3.Vdc or 5.0.Vdc based on models chosen per the order guide (see Figure 1). Supply current 5 Compensated temperature range 6 Operating temperature range 7 Overpressure 8 Burst pressure Startup time (power up to data ready) Response time Upper output clipping limit Lower output clipping limit Minimum load resistance 9 Total error band Output resolution Table 3. Environmental Specifications Parameter Humidity Vibration Shock Life Table 4. Wetted Materials Parameter Covers Adhesives Electronic components 1.5 0  -20 [-4] 97.5 5.0 12 2.5 3.5 85  105  2X operating pressure range minimum 3X operating pressure range minimum 5 1.0 2.5 2.0 - mA °C [°F] °C [°F] ms ms % Vsupply % Vsupply kOhm 10 %FSS 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 11 12 Port 1 (Pressure Port) glass-filled PBT silicone silicon and glass 12 Port 2 (Reference Port) 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 1 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 the AC pressure port configuration, the “pressure” and “reference” ports are reversed. 2 www.honeywell.com/sensing Low Pressure and Ultra-Low Pressure Analog Output Figure 1. Nomenclature and Order Guide 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. 15. For a digital output, please refer to the ASDX Digital Series. 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% Completed Catalog Listing Example Figure 3 shows catalog listing ASDXAVX001PGAA3. It is an AV package, 1 psi gage sensor, with 3.3 Vdc operation using a 10% to 90% calibration. Figure 3. ASDXAVX001PGAA3 ASDXAVX001PGAA3 Output vs. Pressure 4 www.honeywell.com/sensing Figure 4. Dimensional Drawings and Pinout (For reference only: mm [in].) AV Package (Legacy G2) RR Package (Legacy D4) AC Package (Legacy A2) RV Package Table 6. Pinout Pin 1 2 3 4 5 6 7 8 Definition Vsupply Vout GND N/C N/C N/C N/C N/C Type supply analog output supply not used not used not used not used not used Description power supply source provides the analog output power supply ground do not connect in the application do not connect in the application do not connect in the application 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. Asia Pacific Europe Latin America USA/Canada +65 6355-2828; +65 6445-3033 Fax +44 (0) 1698 481481; +44 (0) 1698 481676 Fax +1-305-805-8188; +1-305-883-8257 Fax +1-800-537-6945; +1-815-235-6847 +1-815-235-6545 Fax Specifications may change without notice. The information we supply is believed to be accurate and reliable as of this printing. However, we assume no responsibility for its use. Sensing and Control Honeywell 1985 Douglas Drive North Golden Valley, MN 55422 www.honeywell.com/sensing 008090-9-EN IL50 GLO Printed in USA October 2009 Copyright © 2009 Honeywell International Inc. All rights reserved.