CSDX0811BARO SENSORTECHNICS | Alldatasheet

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Technical content

Digital pressure transducers 1/7February 2009 / 632 www.sensortechnics.com

FEATURES

barometric range 800...1100 mbar

  • Absolute, gage or differential pressure
  • Digital readout via I 2C-bus
  • Precision ASIC conditioning
  • Temperature compensated
  • Non-ratiometric output
  • Total accuracy ±0.5 to ±1.0 %FSS SPECIFICATIONS Maximum ratings Supply voltage VS 4.75 V to 5.25 VDC max. 6.50 VDC Lead temperature (2 - 4 sec.) 250°C Temperature ranges Compensated 0 to +85°C Operating -20 to +105°C Storage -40 to +125°C Vibration 10 g at 20 - 2000 Hz Shock 100 g for 11 ms ELECTRICAL CONNECTION Caution!The sensor is not reverse polarity protected. Incorrect applications of excitation voltage or ground to the wrong pin can cause electrical failure. Application of supply voltage above the maximum can cause electrical failure. Note: A capacitor of 220 nF is required between +Vs and GND. Pin 2 is an internal device connection and should be connected to ground with a 15 nF capacitor. It is important to place thecapacitors as close to the pins aspossible! Pins 4, 6 and 8 are internal device connections and should not be connected for any reason! GND 8 4 3 220 nF 15 nF N/C N/C CSDX SDA SCL +Vs IC

Digital pressure transducers 2/7February 2009 / 632 www.sensortechnics.com PRESSURE RANGES SPECIFICATIONS (VS = 5.0 VDC , TA = 25°C) Specification notes: 1. If maximum burst pressure is exceeded, even momentarily, the package may leak or burst, or the pressure sensing die may fracture. 2. Span is the algebraic difference between the output signal for the highest and lowest specified pressure. 3. Total accuracy is the combined error from offset and span calibration, linearity, pressure hysteresis, and temperature effects. Linearity is the measured deviation based on a straight line. Hysteresis is the maximum output difference at any point within the operating pressure range for increasing and decreasing pressure. Calibration errors include the deviation of offset and full scale from nominal values. 4. Delay time between sampling and signal change at the output. 5. The smallest change in the output voltage, given any change in pressure. traPr ebmune gnarerusserPt sruBe russerp 1 ).pyt(ytivitisneS ORAB1180XDSC0 011ot008) a(rabm2 rab )a( 7.01 /stnuoc rabm R2A0001XDSC1 ot0 rab )a( 22 .3 R2A0002XDSC2 ot04 6 .1 R2A0005XDSC5 ot00 16 .0 R4D5200XDSC5 2ot0 rabm )d,g( 2.0 rab )d,g( 821 R4D/R2G0500XDSC0 5ot05 3.04 6 R4D/R2G0010XDSC0 01ot05 3.02 3 R4D/R2G0520XDSC0 52ot01 8 .21 R4D/R2G0050XDSC0 05ot01 4 .6 R4D/R2G0001XDSC1 ot0 rab )d,g( 22 .3 R4D/R2G0002XDSC2 ot04 6 .1 R4D/R2G0005XDSC5 ot00 16 .0 D4D0100XDSC0 1±ot0 rabm )d( 2.0 rab )d( 061 D4D5200XDSC5 2±ot02 .04 6 D4D0500XDSC0 5±ot05 3.02 3 D4D0010XDSC0 01±ot05 3.06 1 D4D0520XDSC0 52±ot01 4 .6 D4D0050XDSC0 05±ot01 2 .3 D4D0001XDSC1 ±ot0) d(rab2 6 .1

Digital pressure transducers 3/7February 2009 / 632 www.sensortechnics.com scitsiretcarahC. niM. pyT. xaMs tinU tesffoerusserporeZ. ..0100XDSC ...5200XDSC ...0500XDSC 86910 0022 302 stnuoc srehtolla4 8910 0026 102 )SSF(napselacslluF 2 0023 tuptuOe russerpdeificeps.xamta. ..0100XDSC ...5200XDSC ...0500XDSC 86530 0632 363 srehtolla4 8530 0636 163 erusserpdeificeps.nimta. ..0100XDSC ...5200XDSC ...0500XDSC 8630 042 34 srehtolla4 830 046 14 )C°58ot0(ycaruccalatoT 3 ...0100XDSC ...5200XDSC ...0500XDSC 0.1± SSF% srehtolla5 .0± etarelpmaS0 01z H yaledesnopseR 4 37.21 1.41 sm)tluserts1otpurewop(emitputratS 04 petsnoitazitnauQ 5 2s tnuoc noitpmusnoctnerruC 6A m All CSDX...R and CSDX0811BARO scitsiretcarahC. niM. pyT. xaMs tinU erusserpdeificepstsewoltatesffO. ..5200XDSC ...0500XDSC ORAB1180XDSC 8630 042 34 stnuoc srehtolla4 830 046 14 )SSF(napselacslluF 2 0023 tuptuoelacslluF. ..5200XDSC ...0500XDSC ORAB1180XDSC 86530 0632 363 srehtolla4 8530 0636 163 )C°58ot0(ycaruccalatoT 3 ...5200XDSC ...0500XDSC ORAB1180XDSC 0.1± SSF% srehtolla5 .0± etarelpmaS0 01z H yaledesnopseR 4 37.21 1.41 sm)tluserts1otpurewop(emitputratS 04 petsnoitazitnauQ 5 ORAB1180XDSC4 stnuocsrehtolla2 noitpmusnoctnerruC 6A m All CSDX...D PERFORMANCE CHARACTERISTICS The output signal is not ratiometric to the supply voltage (VS = 5.0 VDC , TA = 25°C)

Digital pressure transducers 4/7February 2009 / 632 www.sensortechnics.com FIGURE I: I²C-BUS Protocol of CSDX SDA SCL START condition Data valid Data allowed to change STOP condition INTRODUCTION The CSDX is capable to generate a digital output signal. It runs a cyclic program, which will store a corrected 12-bit sensor value about every 10 ms within the output registers of the internal ASIC. In order to use the pressure transducer for digital signal readout, the device should be connected to a bidirectional I²C-bus. According to the I²C-bus communication specification, the bus is controlled by a master device, which generates the clock signal, controls the bus access and generates START and STOP conditions. The CSDX is designed to work as a slave, hence it will only respond to requests from a master device. The I²C-bus master-slave concept requires a unique address for each device. The CSDX has a hard coded slave address (1111000xb), therefore it is not possible to access more than one CSDX on the same I²C-bus line. DIGITAL I2C INTERFACE The CSDX complies with the following protocol (FIGURE I): Bus not busy: During idle periods both data line (SDA) and clock line (SCL) remain HIGH. START condition (S): HIGH to LOW transition of SDA line while clock (SCL) is HIGH is interpreted as START con- dition. START conditions are always generated by the master. Each request for the current pressure value must be initiated with a START. STOP condition (P): LOW to HIGH transition of SDA line while clock (SCL) is HIGH determines STOP condition. STOP conditions are always generated by the master. More than one request for the current pressure value can be trans- mitted without generation of intermediate STOP condition. DATA valid (D): State of data line represents valid data when, after START condition, data line is stable for duration of HIGH period of clock signal. Data on line must be changed during LOW period of clock signal. There is one clock pulse per bit of data. Acknowledge (A): Data is transferred in pieces of 8 bits (1 byte) on serial bus, MSB first. After each byte receiving device – whether master or slave – is obliged to pull data line LOW as acknowledge for reception of data. Master must generate an extra clock pulse for this pur- pose. When acknowledge is missed, slave transmitter becomes inactive. It is on master either to send last com- mand again or to generate STOP condition in that case. Slave address: Each device connected to the bus has a unique slave address. After generating a START con- dition, the master has to transmit the slave address for the CSDX with a READ command: $F1. The CSDX must not be accessed with a WRITE command ($F0) as the correct function of the device can not be guaranteed in this case (note: a power-down power-up change will force the sensor to use factory data again). DATA operation: The CSDX starts to send 2 data bytes containing the current pressure value placed in the output registers. R/WS Data Byte 1 A Data Byte 2Slave Address A S PSlave Address generated by master generated by slave S = START condition A = Acknowledge P = STOP condition Data Byte 1 = High Byte (MSB first) Data Byte 2 = Low Byte (LSB last) Read out of pressure value Next command

Digital pressure transducers 5/7February 2009 / 632 www.sensortechnics.com I2C INTERFACE PARAMETERS retemaraPl obmySs noitidnoC. niM. pyT. xaMt inU levelhgihtupnI 090 01 fo% sVlevelwoltupnI 00 1 levelwoltuptuO) Am4-=LOI,niardnepo(0 1 tnerrucpulluP) ADSdnaLCSsnip(5 0 2A µ ADSecnaticapacdaoL 004F p ycneuqerfkcolcLCS F LCS ---0 01z Hk neewtebemiteerfsuB noitidnocTRATSdnaPOTS t FUB 7.4s µ )detaeper(emitdloH noitidnocTRATS t ATS;DH eslupkcolctsrifot0 .4s µ LCSfodoirepWOL t WOL 7.4s µ LCSfodoirepHGIH t HGIH 0.4s µ detaeperemitputeS noitidnocTRATS t ATS;US 7.4s µ emitdlohataD t TAD;DH 0s n emitputesataD t TAD;US 052s n htobfoemitesiR LCSdnaADS tR ---0 03s n htobfoemitllaF LCSdnaADS tF ---0 03s n rofemitputeS noitidnocPOTS t OTS;US 4s µ ekipsretliftupnI noisserppus tPS foLCSroADSnosekips desserppuserahtgneltaht 05s n FIGURE II: Timing characteristics of the I²C interface tHD;STA tSU;DAT tHD;DAT tSU;STA tR tF SCL SDA tHIGH tLOW tSU;STO tBUF tHD;STA SDA SCL

Digital pressure transducers 6/7February 2009 / 632 www.sensortechnics.com PHYSICAL DIMENSIONS D4 package G2 package A2 package third angle projection dimensions in mm (inches) 16.89 (0.665) 1.27 typ (0.050 typ) 13.97 (0.550) 16.64 ±0.64 (0.655 ±0.025) 8.89 (0.350) 7.87 typ (0.310 typ) 4.5 (0.177) 2.54 typ (0.100 typ) 8.26 typ (.325 typ) 1.78 (0.070) 3.63 (0.143) 3.38 (0.133) 8.13 (0.320) 0.51 typ (0.02 typ) Low pressure port High pressure port 2.29 (0.090) 4.5 (0.177) 16.64 ±0.64 (0.655 ±0.025) 16.89 (0.665)1.27 typ (0.050 typ) 13.97 (0.550) 8.89 (0.350) 8.0 typ (0.315 typ) 2.29 typ (0.090 typ) 8.46 (0.333) 2.54 typ (0.100 typ) 0.51 typ (0.02 typ) 2 ° typ 16.89 (0.665) 1.27 typ (0.050 typ) 13.97 (0.550) 3.15 (0.124) 4.9 (0.193) 16.64 ±0.64 (0.655 ± 0.025) 8.89 (0.350)5.08 (0.200) 2.29 typ (0.090 typ) 4.5 (0.177) 2.54 typ (0.100 typ) 0.51 typ (0.02 typ) 6.99 (0.275) 1.19 typ (0.047 typ) 2.79 typ (0.11 typ)

Digital pressure transducers 7/7February 2009 / 632 www.sensortechnics.com

ORDERING INFORMATION

egnarerusserPe tulosbAe gaGe gaG/laitnereffiD rabm52ot0- R 4D5200XDSC rabm05ot0R 2G0500XDSCR 4D0500XDSC rabm001ot0R 2G0010XDSCR 4D0010XDSC rabm052ot0R 2G0520XDSCR 4D0520XDSC rabm005ot0R 2G0050XDSCR 4D0050XDSC rabm0011ot008O RAB1180XDSC- - rab1ot0R 2A0001XDSCR 2G0001XDSCR 4D0001XDSC rab2ot0R 2A0002XDSCR 2G0002XDSCR 4D0002XDSC rab5ot0R 2A0005XDSCR 2G0005XDSCR 4D0005XDSC rabm01±ot0 D4D0100XDSC rabm52±ot0 D4D5200XDSC rabm05±ot0 D4D0500XDSC rabm001±ot0 D4D0010XDSC rabm052±ot0 D4D0520XDSC rabm005±ot0 D4D0050XDSC rab1±ot0 D4D0001XDSC Sensortechnics reserves the right to make changes to any products herein. Sensortechnics 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. Other pressure ranges or calibrations are available on request CSDX...A2R, CSDX...BARO Note: Pins 4, 6 and 8 are internal device connections and should not be connected for any reason. Pin 2 is an internal device connection and should be connected to ground with a 15 nF capacitor. Vs (pin 1) identifier Vs (pin 1) identifier Vs (pin 1) identifier SCL N/C SDA N/C SCL N/C SDA N/C SCL N/C SDA N/C +Vs IC GND N/C +Vs IC GND N/C +Vs IC GND N/C