npa low pressure the npa product series is provided in a miniature size as a cost effective solution for applications that require calibrated performance. packaged in a soic14 pin surface mount, the npa-low pressure series is available in gauge or differential pressure ranges with either amplifed analog or digital outputs. the sensor is intended for printed circuit board mounting and delivered in tape and reel form to simplify manufacturing handling. features ? surface mountable ? differential, gauge, low pressure ? 2 and 5 h 2 o full scale ? output options: amplifed analog, digital serial (14bit), digital i 2 c ? on chip temperature sensor in digital mode ? operating temperature range of -40 to 125c ? total error band: +/-1.5% span at 5h 2 o full scale +/-2.5% span at 2h 2 o full scale surface-mount pressure sensor series a mphenol advanced sensors
2 low pressure npa specifcations parameter value units notes pressure range 2 or 5 in h 2 o 498 or 1245 pa maximum overpressure 5x rated pressure 400 in h 2 o package overpressure electrical @ 25c (77f) unless otherwise stated input excitation 3.3 to 5.0 vdc 3.1 to 5.25 vdc environmental temperature range operating compensated storage -40 to +125 0 to +60 -40 to +125 c c c -40 to +257f +32 to +140f -40 to +257f mechanical/package weight ~1 grams media compatibility positive differential and gage ports media compatible with thermoset plastic, silicon, epoxy, rtv, pyrex, and uv silicone gel negative differential ports dry gasses only performance parameters units minimum maximum notes accuracy (total error band) % span -1.5 1.5 5h 2 o full scale -2.5 2.5 2h 2 o full scale response time ms 2 0.5 ms typical current consumption ma 1.2 typical
3 typical analog circuits - circuit layout same as ratiometric voltage output ratiometric voltage output - standard npa absolute voltage output - request required ratiometric voltage output with over-voltage protection - request required 1 2 3 4 5 6 7 14 13 12 11 10 9 8 np a se ns or vs s vg at e vd d si g 1 2 3 4 5 6 7 14 13 12 11 10 9 8 np a se ns or vs s vg at e vd d si g vs up pl y +2 .7 to +5 .5 v vo ut gr ou nd 0. 1 f 1 2 3 4 5 6 7 14 13 12 11 10 9 8 np a se ns or vs s vg at e vd d si g 1 2 3 4 5 6 7 14 13 12 11 10 9 8 np a se ns or vs s vg at e vd d si g vs uppl y +5 .5 to +30 v vo ut gr o und 0. 1 f mm bf 4 392 1 2 3 4 5 6 7 14 13 12 11 10 9 8 np a se ns or 1 2 3 4 5 6 7 14 13 12 11 10 9 8 t vs up pl y +5 to +5 .5 v vo ut gr o und 0. 1 f j 107 vs s vg at e vd d si g np a se ns or vs s vg ae vd d si g pin # amplified analog function notes 1 -- 2 -- 3 nc do not connect 4 nc do not connect 5 -- 6 vss ground supply 7 -- 8 sig analog out, calibration interface 9 vdd supply voltage 10 -- 11 nc do not connect 12 nc do not connect 13 -- 14 -- npa amplified output pinout parameter units min max analog performance parameters 5 volt excitation offset volts 0.44 0.56 span (absolute/gauge) volts 4 analog performance parameters 3.3 volt excitation offset volts 0.46 0.54 span (absolute/gauge) volts 2.5 output option: amplifed analog
4 output option: digital serial (14 bit) parameter units min typ max notes digital performance resolution adc 14bit 16383 steps sampling rate khz 1 zacwiredigital output (nom) bridge readings with temperature option zacwiredigital output (nom) bridge readings digital output options streaming serial output is a 14 bit number proportional to the full scale. pin # amplified digital serial function notes 1 -- 2 -- 3 nc do not connect 4 nc do not connect 5 -- 6 vss ground supply 7 -- 8 sig digital out, calibration interface 9 vdd supply voltage 10 -- 11 nc do not connect 12 nc do not connect 13 -- 14 -- npa digital serial pinout
5 output option: digital i 2 c pin # digital i 2 c function notes 1 -- 2 -- 3 nc do not connect 4 nc do not connect 5 -- 6 vss ground supply 7 vdd supply voltage 8 sda serial data, calibration interface 9 scl serial clock, calibration interface 10 -- 11 nc do not connect 12 nc do not connect 13 -- 14 -- digital i 2 c update mode output options npa i 2 c pinout parameter units min typ max notes digital performance resolution (adc) bit 14 16383 steps i 2 c slave address 0x28 sampling rate khz 2 i 2 c bit rate kbits/s 100 400 i 2 c mode update i 2 c circuit npa pinout
6 barbed design recommended tubing size of 3/32 id, 7/32 od, 1/16 wall thickness ( all measurements given in mm) suggested pcb land pattern package leadframe material: alloy 194, nipdau
7 ordering information warranty novasensor warrants its products against defects in material and workmanship for 12 months from the date of shipment. products not subjected to misuse will be repaired or replaced. novasensor reserves the right to make changes without further notice to any products herein. novasensor makes no warranty, representation or guarantee regarding the suitability of its products for any particular application. novasensor does not assume any liability arising out of the application or use of any product or circuit and specifcally disclaims, and all liability, without limitation consequential or incidental damages. the foregoing warranties are exclusive and in lieu of all other warranties, whether written, oral, implied or statutory. no implied statutory warranty or merchantability or ftness for particular purpose shall apply. model npa code description 300 analog amplifed output, 3.3vdc excitation, calibrated sensor 500 analog amplifed output, 5vdc excitation, calibrated sensor 600 zacwire digital serial output, calibrated sensor, 2 byte 601 zacwire digital serial output, calibrated sensor, 3 byte 700 i 2 c - digital output, calibrated sensor, 2 byte code port type b 2 barbed ports for gauge, absolute and differential pressure types** code pressure range 02w 2h20 (0.5 kpa) 05w 5h20 (1.24 kpa) code pressure type g gauge d differential npa - 700 b - 02w d example ? contact novasensor for custom port options. ? refer to application guide 910-289 for more information. ? product is rohs:2010 compliant.
aas-920-644c 07/2016 www.amphenol-sensors.com ? 2016 amphenol corporation. all rights reserved. specifcations ar e subject to change without notice. other company names and product names used in this document are the registered trademarks or trademarks of their respective owners. a mphenol advanced sensors
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