PRELIMINARY DATA SHEET LP Series Digital

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1 DATA SHEET L Series - Digital is a surface mountable pressure sensor package with a compensated digital output suitable fo ultra-low pressure sensing applications. COMANY: Merit Sensor is a leader in piezoresistive pressure sensing and partners with clients to create high performing solutions for a variety of applications and industries. SENTIUM: Merit Sensor products incorporate a proprietary Sentium technology developed to provide a best-in-class operating temperature range -4 C to 85 C) and superior stability. TECHNOLOGY: Merit Sensor utilizes a piezoresistive Wheatstone bridge in a design that anodically bonds glass to a chemically etched silicon diaphragm. All products are RoHS compliant. CAABILITIES: Merit Sensor designs, engineers, fabricates, dices, assembles, tests, sells and services die and packaged products from a state-of-the-art facility near Salt Lake City, Utah. FEATURES ressure.5 to psi.3 to 68.9 mbar;.3 to 6.89 Ka; Range 4.2 to 27.7 in H 2 O) Output I 2 C Type Gage and Differential Media Clean, Dry Air and Non-corrosive Gases ackaging Tape and Reel Customization Sensitivity, Resistance, Bridge, Constraint, etc. 42 Family art Number Configurator 42-XXXX-XX- ressure 5 =.5psi 3 =.3psi =.psi Reference D = Differential G = Gage in Type = J-lead ort = Dual horizontal, facing same direction BENEFITS erformance Enjoy best-in-class performance due to Merit s proprietary Sentium technology Cost Security Speed Save money over time with high-performing die Feel confident doing business with an experienced company backed by a solid parent company NASDAQ: MMSI) Get to market quickly with creative and flexible solutions Clock Speed = MHz I 2 C Address = x28 = x38 2 = x48 3 = x58 4 = x68 5 = x78 6 = Open* *Device will respond to any address. Input Buffer = None Update Rate = 5ms Operation Mode = Update mode constant Service Experience prompt, personal and professional support 42seriesDS.5

2 SECIFICATIONS arameter Minimum Typical Maximum Units Notes Electrical Supply Voltage Vdd) V Supply Current 3 ma ) Operating Temperature C Storage Temperature -55 C erformance ressure ADC Resolution 4 Bits ressure Accuracy % FSO 2) 3) Startup time 5 ms Digital update time.5 25 ms roof ressure 5X 4) Burst ressure Transfer Function Formula psi counts Media Compatibility For Use With Non-corrosive Dry Gasses Solder temperature: max 25 C, 5 seconds max Where psi counts Min Max Max = Measured ressure in SI = ressure from Merit Sensor art = Minimum Calibrated ressure = Maximum Calibrated ressure = 6384 = 4 Bit Resolution Notes: input voltage, 2) Over C to 6 C 3) Applicable if Vdd = 4.75V to 5.25V 4) Full scale pressure DIMENSIONS millimeters) SMT Landing ad Layout 8.4 Device inout VDD = Vdd - Supply voltage 2 = N/C 3 = N/C 4 = VSS - Ground 5 = N/C 6 = I 2 C conversion complete signal 7 = SDA - I 2 C data 8 = SCL - I 2 C clock Typical.µf placed near pins and 4 VSS 4 Digital out SSC SCL 8 SDA 7 INT 6

3 I 2 C ARAMETERS * arameter Symbol Min Typ Max Units SCL clock frequency fscl 4 khz Start condition hold time relative to SCL edge thdsta. µs Minimum SCL clock low width tlow.6 µs Minimum SCL clock high width thigh.6 µs Start condition setup time relative to SCL edge tsusta. µs Data hold time on SDA relative to SCL edge thddat. µs Data setup time on SDA relative to SCL edge tsudat. µs Stop condition setup time on SCL tsusto. µs Bus free time between stop condition and start condition tbus 2 µs Combined low and high widths must equal or exceed minimum SCLK period. I 2 C TIMING DIAGRAM* SDA t SUSDAT t LOW t HDSTA t BUS SCL t HDSTA t HDDAT t HIGH t SUSTA t SUSTO MERIT SENSOR 42 I 2 C COMMUNICATION Communications to the 42 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 If the part has an open address, 7 bits of anything is acceptable), and sets the read/write bit. The master then waits for an acknowledgment. The acknowledgment is sent by the pressure sensor along with 2 bits of status and bits 3:8 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. MASTER SLAVE MASTER SLAVE MASTER S RW A SB SB A N \ DEVICE ADDRESS / \ SENSOR DATA [3:8] / \ SENSOR DATA [7:] / ST S RW Start Conditioning Read/Write Bit # A Device Slave Address Acknowledge Bit # N Data Bit No Acknowledge Bit Status Bits Normal Operation, Good acket Device in Command Mode Stale Data ST Stop Condition SB Status Bits Diagnostic Condition Exsists *Used by permission, ZMDI

4 TRANSFER FUNCTION EXAMLES Example :.5 SI Gage art: 42-5G-xx- =. SI =.5 SI counts =725 Max =6384 si = si =.638 si SI art: 42-5G-xx Calibrated Range ressure) Example 2:. SI Gage art: 42-G-xx- =. SI =. SI counts =725 Max =6384 si = si =.4255 si SI art: 42-G-xx-.25 Calibrated Range ressure) Example 3: -.5 to.5 SI Differential art: 42-5D-xx art: 42-5D-xx- Calibrated Range ressure) = -.5 SI =.5 SI counts =892 Max =6384 si = si =. si SI

5 Mouser Electronics Authorized Distributor Click to View ricing, Inventory, Delivery & Lifecycle Information: Merit Sensor: 42-5D G-6-