Features Applications n Compensated digital output n Ultra-low pressure sensing n Digital I2C output n Gauge and differential types n For use in clean, dry air and non-corrosive gas environments Industrial: n HVAC systems n Process monitoring n Packaging automation **Medical Devices (low/medium risk): n Diagnostic equipment n Analysis equipment n RoHS compliant* BPS120 Series - 12 mm Digital Low Pressure Sensor Electrical Characteristics Supply Voltage (Vs)............................................................................................................................. 2.7 V minimum, 5 V typical, 5.5 V maximum Supply Current @ 5 V.................................................................................................................1.2 mA minimum, 2 mA typical, 3.5 mA maximum Performance Characteristics Operating Temperature.................................................................................................................................... -40 C to +85 C (-40 F to +185 F) Storage Temperature..................................................................................................................................... -55 C to +100 C (-67 C to +212 F) Pressure Range......................................................................................0.15 to 1.0 psi (10.3 to 68.9 mbar; 1.03 to 6.89 KPa; 4.2 to 27.7 in H2O) Output...................................................................................................................................................................................................Digital I2C (1) Effective ADC Resolution................................................................................................................................................................................. 13 bit Accuracy @ 25 C.................................................................................................................................................................................. 0.25 % FS Total Error Band over 0 C to 60 C (+32 F to +140 F)......................................................................................................................... 1.5 % FS Long Term Stability.................................................................................................................................................................................. 0.5 % FS Startup Time................................................................................................................................................................................... 15 ms maximum Digital Update Time.............................................................................................................................................................................8.5 ms typical Proof Pressure....................................................................................................................................................................... 5X full scale pressure Burst Pressure................................................................................................................................................................................................. 10 psi (1) I2C address is set to (0x28). Alternative addresses are available. Consult the factory for custom options. Product Characteristics Media Compatibility.......................................................................................................................................................... Non-corrosive dry gasses Moisture Sensitivity Level........................................................................................................................................................................................1 ESD Classification (HBM)..................................................................................................................................................................................2 kV Marking................................................................................... Partial model number, media compatibility, pressure type, pressure rating, lot code Standard Packaging................................................................................................................................................................ 250 pcs./13-inch reel Weight..................................................................................................................................................................................1.307 grams (0.046 oz) Transfer Function Formula Ppsi = (Pmax - Pmin) * ( Pcounts - 0.1 * Max 0.8 * Max ) Basic Circuit Schematic 1 + Pmin Vs Where Ppsi = Measured Pressure in PSI Pmin = Minimum Pressure DIGITAL OUT = Maximum Pressure SSC Pcounts = Pressure Counts Pmax Max SCL 8 SDA 7 = 16384 = 14 Bits Consult factory for custom options such as supply voltage, temperature calibration range, output range accuracy specification, and update rate. GND 4 Note: Power supply decoupling included. * RoHS3 Directive 2015/863 Amendments of Annex II on March 31, 2015 ** Bourns(R) products have not been designed for and are not intended for use in "lifesaving," "life-critical" or "life-sustaining" applications nor any other applications where failure or malfunction of the Bourns(R) product may result in personal injury or death. See Legal Disclaimer Notice on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. BPS120 - 12 mm Digital Low Pressure Sensor 3312 - 2Series mm SMD Trimming Potentiometer I2C Parameters SCL Clock Frequency fSCL...............................................................................................................................................................100 to 400 kHz Start Condition Hold Time Relative to SCL Edge tHDSTA................................................................................................................................0.1 s Minimum SCL Clock Low Width1 tLOW...........................................................................................................................................................0.6 s Minimum SCL Clock High Width1 tHIGH..........................................................................................................................................................0.6 s Start Condition Setup Time Relative to SCL Edge tSUSTA..............................................................................................................................0.1 s Data Hold Time on SDA Relative to SCL Edge tHDDAT...................................................................................................................................0.0 s Data Setup Time on SDA Relative to SCL Edge tSUDAT.................................................................................................................................0.1 s Stop Condition Setup Time on SCL tSUSTO....................................................................................................................................................0.1 s Bus Free Time Between Stop Condition and Start Condition tBUS.................................................................................................................... 2 s 1 Combined low and high widths must equal or exceed minimum SCLK period. I2C Parameters I2C Communication Communication to the Model BPS120 is read only. To read the pressure counts, the master performs a read request by asserting a start condition, sending the 7-bit address of the part (0x28), and sets the read/write bit. The master then waits for an acknowledgement. The acknowledgement is sent by the pressure sensor along with 2 bits of status and bits 13:8 of the pressure counts, the master acknowledges the first 8 bits, and the pressure sensor sends the remaining 8 bits of data. The master then does not acknowledge and sends a stop condition, signaling the end of the transaction. Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. BPS120 - 12 mm Digital Low Pressure Sensor 3312 - 2Series mm SMD Trimming Potentiometer Cross Section Terminal Assignment DEVICE PINOUT MEMS Sensing Element (Differential Pressure) P1 Cover/Mechanical Protection Soft Die Attach Material Integrated Signal Conditioning (ASIC) Media Inlet Ports Filter Capacitor Vs P2 N/C P3 N/C P4 VSS - Ground P5 N/C P6 N/C P7 SDA - I2C Data P8 SCL - I2C Clock Electrical Connections Recommended PCB Layout 2.5 Product Dimensions 8 7 6 8 7 5 6 (0.098) 2.5 2.5 (0.098) (0.098) 2.5 (0.098) 3.6 (0.142) 3.6 (0.142) 2.2 5 8 (0.087) 2.2 DIA. (0.087) DIA. 2.5 (0.098) 2.5 (0.098) 7 8 12.7 (0.500) 12.7 (0.500) 6 7 5 6 5 11.4 (0.449) 11.4 (0.449) 11.3 (0.445) 11.3 (0.445) 1 2 3 1 2 4 3 1 4 3 2 4 3 1.3 2.5 1.3 2.5 (0.051) (0.098) (0.051) (0.098) SMT LANDING PAD LAYOUT SMT LANDING PAD LAYOUT 10.2 (0.402) 10.2 (0.402) DIMENSIONS: 8.4 (0.331) 8.4 (0.331) 2.5 2.5 (0.098) (0.098) 2.5 2.5 (0.098)(0.098) 2 1 TOLERANCES: 4 1.9 1.9 (0.075) (0.075) MM (INCHES) 0.3 (0.012) 2.5 2.5 (0.098) (0.098) Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. BPS120 - 12 mm Digital Low Pressure Sensor 3312 - 2Series mm SMD Trimming Potentiometer How To Order BPS120 - A D 0P30 - 2 D G Model Series Digital Media Compatibility A = Air/Gas Pressure Type G = Gauge D = Differential Pressure (psi) 0P15 = 0.15 0P30 = 0.30 01P0 = 1.0 Terminal Pins 2 = Surface Mount Terminals Port Style D = Dual Port, Horizontal Packaging Designator G = 250 pcs. per 13-inch Reel Solder Profile TEMPERATURE (C) 300 250 C Max. (5 Seconds Max.) 200 150 5 C 100 Time 80-100 Seconds 60 Seconds Max. Notes: 1. No clean solder paste is recommended. 2. Aqueous wash is not recommended. 3. Use of water soluble soldering flux should be avoided due to possible corrosion. 4. Multiple passes through the soldering process is not recommended. 5. Other SMD processes and profiles should be verified by the customer. Processing Method: Reflow soldering with infrared heat or forced air convection (only once). Specifications are subject to change without notice. Users should verify actual device performance in their specific applications. The products described herein and this document are subject to specific legal disclaimers as set forth on the last page of this document, and at www.bourns.com/docs/legal/disclaimer.pdf. BPS120 - 12 mm Digital Low Pressure Sensor 3312 - 2Series mm SMD Trimming Potentiometer Packaging Specification 250 pieces per 13-inch reel. Meets specifications of EIA-481-1 or EIA-481-2. 12.7 DIA. (0.5) 3.81 (0.15) EQUAL SPACED 3 PLCS. 29.21 (1.15) 20.32 DIA. (0.8) 2.0 (0.079) 4.0 (0.157) 101.6 (4.0) 330.2 DIA. (13.0) 32.0 (1.260) 16.0 (0.630) 25.4 (1.0) DIMENSIONS: MM (INCHES) TOLERANCES: 0.25 (0.010) Asia-Pacific: Tel: +886-2 2562-4117 * Email: asiacus@bourns.com EMEA: Tel: +36 88 885 877 * Email: eurocus@bourns.com The Americas: Tel: +1-951 781-5500 * Email: americus@bourns.com www.bourns.com REV. 04/19 Specifications are subject to change without notice. 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