Amplified Very Low Pressure Sensors AMPLIFIED Pressure Sensors Features • 0.25 and 0.50 In H2O Pressure Ranges • Ratiometric 4V Output • Temperature Compensated • Calibrated Zero and Span Applications General Description The Amplified line of low pressure sensor is based upon a proprietary technology to reduce all output offset or common mode errors. This model provides a ratiometric 4-volt output with superior output offset characteristics. Output offset errors due to change in all sensors • Medical Breathing • HVAC conventional compensation methods. In addition the sensor utilizes a silicon, micromachined, stress concentration enhanced structure to provide a very linear output to measured pressure. These calibrated and temperature compensated sensors give an accurate and stable output over a wide temperature range. This series The output of the device is ratiometric to the supply voltage over a supply voltage range of 4.5 to 5.5 volts. 2.54 0.100 (Typ) 8.74 0.344 CL Vs 1.27 0.050 0.020" x 0.010" Pin 0.30" minimum length Pin 1 Identifier 5.33 0.210 Port B Gnd 3.18 R0.125 pin 1: Vsupply 12.19 0.480 13.97 0.550 20.32 0.800 pin 2: Common 21.59 0.850 pin 3: Voutput pin 4: do not connect All Sensors DS-0032 Rev B Vout + 27.43 1.080 3.56 0.140 Port A 10.67 0.420 10.67 0.420 3.18 0.125 Port 0.179"/0.189" Equivalent Circuit a 16035 Vineyard Blvd. Morgan Hill, CA 95037 Physical Dimensions p 408 225 4314 f 408 225 2079 is intended for use with non-corrosive, non-ionic working fluids such as air, dry gases and the like. e www.allsensors.com temperature, stability to warm-up, stability to long time period, and position sensitivity are all significantly reduced when compared to Pressure Sensor Ratings Supply Voltage, Vs Common-mode pressure Environmental Specifications +4.5 to +5.5 Vdc Temperature Ranges -10 to +10 psig Compensated 270°C Lead Temperature, max (soldering 2-4 sec.) 5 to 50° C Operating -25 to 85° C Storage -40 to 125° C Humidity Limits 0 to 95% RH (non condensing) Standard Pressure Ranges Device Operating Range Proof Pressure Burst Pressure Nominal Span (5) 0.25 INCH-D-4V ±0.25 inH2O 40 inH2O 80 inH2O ±2.0 V 0.25 INCH-G-4V 0.25 inH2O 40 inH2O 80 inH2O 4.0 V 0.5 INCH-D-4V ±0.5 inH2O 40 inH2O 80 inH2O ±2.0 V 0.5 INCH-G-4V 0.5 inH2O 40 inH2O 80 inH2O 4.0 V Performance Characteristics for: 0.25 INCH-D-4V Parameter, note 1 note 1 Minimum Nominal Maximum Units Output Span note 5 ±1.90 ±2.0 ±2.1 V Offset Voltage @ zero differential pressure 2.15 2.25 2.35 V Offset Temperature Shift, note 2 - - ±60 mV Offset Warm-up Shift, note 3 - ±20 - mV Offset Position Sensitivity (±1g) - ±20 - mV Offset Long Term Drift (one year) - ±20 - mV Linearity, hysteresis error, note 4 - 0.05 0.25 %FSS Span Temperature Shift, note 2 - - ±3 %FSS Minimum Nominal Maximum Units Output Span note 5 3.9 4.0 4.1 V Offset Voltage @ zero gage pressure 0.15 0.25 0.35 V Offset Temperature Shift, note 2 - - ±60 mV Offset Warm-up Shift, note 3 - ±20 Offset Position Sensitivity (±1g) - ±20 - mV Offset Long Term Drift (one year) - ±20 - mV Linearity, hysteresis error, note 4 - 0.05 0.25 %FSS Span Temperature Shift, note 2 - - ±3 %FSS Performance Characteristics for: 0.25 INCH-G-4V note 1 Parameter, note 1 mV Amplified Very Low Pressure Sensors Nominal Maximum Units ±1.90 ±2.0 ±2.1 V Offset Voltage @ zero differential pressure 2.15 2.25 2.35 V Offset Temperature Shift, note 2 - - ±60 mV Offset Warm-up Shift, note 3 - ±20 - mV Offset Position Sensitivity (±1g) - ±20 - mV Offset Long Term Drift (one year) - ±20 - mV Linearity, hysteresis error, note 4 - 0.05 0.25 %FSS Span Temperature Shift, note 2 - - ±3 %FSS Minimum Nominal Maximum Units Output Span note 5 3.9 4.0 4.1 V Offset Voltage @ zero gage pressure 0.15 0.25 0.35 V Offset Temperature Shift, note 2 - - ±60 mV Offset Warm-up Shift, note 3 - ±20 - mV Offset Position Sensitivity (±1g) - ±20 - mV Offset Long Term Drift (one year) - ±20 - mV Linearity, hysteresis error, note 4 - 0.05 0.25 %FSS Span Temperature Shift, note 2 - - ±3 %FSS Performance Characteristics for: 0.5 INCH-G-4V note 1 Specification Notes note 1: All parameters are measured at 5.0 volt excitation, for the nominal full scale pressure and room temperature unless otherwise specified. with positive pressure applied to 2: 3: note 4: note 5: note note Port B. Pressure measurements are Shift is relative to 25°C. Shift is within the first hour of excitation applied to the device. Measured at one-half full scale rated pressure using best straight line curve fit. The span is the algebraic difference between full scale output voltage and the offset voltage. All Sensors reserves the right to make changes to any products herein. All Sensors does not assume any liability arising out of the application or use of any product or circuit described herein, neither does it convey any license under its patent rights nor the rights of others. All Sensors DS-0032 Rev B a 16035 Vineyard Blvd. Morgan Hill, CA 95037 p 408 225 4314 Parameter, note 1 e www.allsensors.com Minimum Output Span note 5 f 408 225 2079 Parameter, note 1 all sensors Performance Characteristics for: 0.5 INCH-D-4V note 1