HDI Series Amplified pressure sensors FEATURES · 10 mbar to 5 bar, absolute, gage or differential pressure · Digital I2C-bus and analog output · Precision ASIC signal conditioning · Calibrated and temperature compensated · SMT and DIP housings · RoHS compliant MEDIA COMPATIBILITY To be used with non-corrosive, non-ionic working fluids such as clean dry air, dry gases and the like. SPECIFICATIONS ELECTRICAL CONNECTION Maximum ratings Supply voltage VS HDI...3 2.7 ... 3.3 VDC HDI...5 4.5 ... 5.5 VDC max. 6.50 VDC +Vs Output current Sink Source 1 mA 1 mA Lead specifications Average preheating temperature gradient 2.5 K/s Soak time ca. 3 min Time above 217°C 50 s Time above 230°C 40 s Time above 250°C 15 s Peak temperature 260°C Cooling temperature gradient -3.5 K/s Temperature ranges5 Compensated Operating Storage E / 11650 / G 1 2 4 3 6 Vout SDA SCL GND 0 ... +85 °C -20 ... +85 °C -40 ... +125 °C 1/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors PRESSURE SENSOR CHARACTERISTICS (TA=25 °C, RH=50 %) Part no. Operating pressure Proof pressure1 Burst pressure2 HDIM010...B... HDIM020...B... HDIM050...B... HDIM100...B... HDIM200...B... HDIM500...B... HDIB001...B... HDIM010...U... HDIM020...U... HDIM050...U... HDIM100...U... HDIM200...U... 0...±10 mbar 0...±20 mbar 0...±50 mbar 0...±100 mbar 0...±200 mbar 0...±500 mbar 0...±1 bar 0...10 mbar 0...20 mbar 0...50 mbar 0...100 mbar 0...200 mbar 150 mbar 150 mbar 550 mbar 1 bar 1 bar 1 bar 2 bar 150 mbar 150 mbar 550 mbar 1 bar 1 bar 200 mbar 200 mbar 800 mbar 1.5 bar 1.5 bar 1.5 bar 3 bar 200 mbar 200 mbar 800 mbar 1.5 bar 1.5 bar HDIM500...U... 0...500 mbar 1 bar 1.5 bar HDIB001...U... HDIB002...U... HDIB005...U... HDI0611AR... HDI0811AR... 0...1 bar 0...2 bar 0...5 bar 600...1100 mbar(a) 800...1100 mbar(a) 2 bar 4 bar 7 bar 2 bara 2 bara 3 bar 6 bar 7 bar 3 bara 3 bara Other pressure ranges are available on request. Please contact First Sensor. Specification notes: 1. Proof pressure is the maximum pressure which may be applied without causing durable shifts of the electrical parameters of the sensing element. 2. Burst pressure is the maximum pressure which may be applied without causing damage to the sensing element or leaks to the housing. 3. Full Scale Span (FSS) is the algebraic difference between the output signal for the highest and lowest specified pressure. 4. 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. 5. Extended temperature ranges on request. Please contact First Sensor. 6. Max. delay time between pressure change at the pressure die and signal change at the output. 7. The response time depends on the adjusted internal A/D resolution of the sensor. For 12 bit it is typ. 0.5 ms. Other A/D resolutions and reponse time are available on request. Please contact First Sensor for further information. 8. Sensors with lower current consumption are available on request. Please contact First Sensor for further information. E / 11650 / G 2/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors PERFORMANCE CHARACTERISTICS (VS=5.0 VDC, TA=25 °C, RH=50 %, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS) All HDI...P5 devices (VS = 5.0) Characteristics Total accuracy (0...85°C)4 all barometric devices all other devices Response delay6, 7 A/D resolution7 D/A resolution Current consumption8 Min. Typ. Max. ±1.0 ±0.5 0.5 12 Units %FSS ms 11 5 bit mA All HDI...R...P5 (barometric devices) Characteristics Min. Typ. Max. Units ANALO G UE PE R F O R M A N C E C H A R A C T E R I S T I C Output at min. specified pressure Full scale span (FSS)3 Full scale output 0.46 4.46 0.50 4.00 4.50 0.54 4.54 V DI G I TAL PER F O R M A N C E C H A R A C T E R I S T I C Output at min. specified pressure Full scale span (FSS)3 Full scale output 3015 29228 3277 26214 29490 3539 29752 Min. Typ. Max. counts All HDI...U...P5 (unidirectional devices) Characteristics Units ANALO G PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Full scale output 0.48 4.48 0.50 4.00 4.50 0.52 4.52 V DI G I TAL PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Full scale output 3146 29359 3277 26214 29490 3408 29621 Min. Typ. Max. counts All HDI...B...P5 (bidirectional devices) Characteristics Units ANALO G PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Output 2.48 at max. specified pressure at min. specified pressure 4.48 0.48 2.50 4.00 4.50 0.50 2.52 4.52 0.52 V DI G I TAL PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Output E / 11650 / G 16252 at max. specified pressure at min. specified pressure 29359 3146 16384 26214 29490 3277 16515 29621 3408 counts 3/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors PERFORMANCE CHARACTERISTICS (VS=3.0 VDC, TA=25 °C, RH=50 %, analog output signal is ratiometric to VS, digital output signal is not ratiometric to VS) All HDI...P3 devices (VS = 3.0) Characteristics Total accuracy (0...85°C)4 all barometric devices all other devices Response delay6, 7 A/D resolution7 D/A resolution Current consumption8 Min. Typ. Max. ±1.0 ±0.5 0.5 12 Units %FSS ms 11 3 bit mA All HDI...R...P3 (barometric devices) Characteristics Min. Typ. Max. Units ANALO G UE PE R F O R M A N C E C H A R A C T E R I S T I C Output at min. specified pressure Full scale span (FSS)3 Full scale output 0.23 2.23 0.25 2.00 2.25 0.27 2.27 V DI G I TAL PER F O R M A N C E C H A R A C T E R I S T I C Output at min. specified pressure Full scale span (FSS)3 Full scale output 2512 24357 2731 21845 24575 2949 24794 Min. Typ. Max. counts All HDI...U...P3 (unidirectional devices) Characteristics Units ANALO G PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Full scale output 0.24 2.24 0.25 2.00 2.25 0.26 2.26 V DI G I TAL PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Full scale output 2621 24466 2731 21845 24575 2840 24684 Min. Typ. Max. counts All HDI...B...P3 (bidirectional devices) Characteristics Units ANALO G PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Output 1.24 at max. specified pressure at min. specified pressure 2.24 0.24 1.25 2.00 2.25 0.25 1.26 2.26 0.26 V DI G I TAL PER F O R M A N C E C H A R A C T E R I S T I C Zero pressure offset Full scale span (FSS)3 Output E / 11650 / G 13545 at max. specified pressure at min. specified pressure 24466 2621 13653 21845 24575 2731 13762 24684 2840 counts 4/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors I²C BUS Introduction The HDI is capable to generate a digital output signal. The device runs a cyclic program, which will store a corrected pressure value with 12 bit resolution about every 250 µs within the output registers of the internal ASIC. In order to use the sensor for digital signal readout, it should be connected to a bidirectional I²C-bus. According to the I²C-bus 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 HDI is designed to work as a slave, hence it will only respond to requests from a master device. Digital I²C interface The HDI complies with the following protocol (Fig. 1): 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 condition. START conditions are always generated by the master. Each initial request for a pressure value has to begin with a START condition. 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 transmitted 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 purpose. When acknowledge is missed, slave transmitter becomes inactive. It is on master either to send last command again or to generate STOP condition in that case. Slave address: The I²C-bus master-slave concept requires a unique address for each device. The HDI has a preconfigured slave address (1111000xb). By factory programming it is possible to define a secondary slave address additional to the general one. According to I²C specification 127 different addresses are available. The sensor will then listen to both slave addresses. After generating a START condition the master sends the address byte containing a 7 bit address followed by a data direction bit (R/W). A "0" indicates a transmission from master to slave (WRITE), a "1" indicates a data request (READ). DATA operation: The sensor starts to send 2 data bytes containing the current pressure value as a 15 bit information placed in the output registers. SCL SDA START condition 1 S Slave Address R/W A Data valid Data allowed to change Data Byte 1 A STOP condition Data Byte 2 Read out of first pressure value generated by master generated by slave S = START condition A = Acknowledge P = STOP condition A Data Byte 1 P Read out of n pressure values (optional) Data Byte 1 = High Byte (MSB first) Data Byte 2 = Low Byte (LSB last) Fig. 1: I²C bus protocol E / 11650 / G 5/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors I²C Interface Parameters Parameter Input high level Input low level Output low level Pull-up resistor Load capacitance @ SDA Input capacitance @ SDA/SCL SCL clock frequency Bus free time between STOP and START condition Hold time (repeated) START condition, to first clock pulse LOW period of SCL HIGH period of SCL Setup time repeated START condition Data hold time Data setup time Rise time of both SDA and SCL Fall time of both SDA and SCL Setup time for STOP condition Symbol Min. 90 0 Typ. Max. 100 10 10 Unit % of Vs W 500 CSDA CI2C_IN FSCL tBUF tHD.STA tLOW tHIGH tSU.STA tHD.DAT tSU.DAT tR tF tSU.STO 400 10 400 100* 1.3 0.8 1.3 0.6 1 0 0.2 pF kHz µs 0.3 0.3 0.6 * recommended Note: First Sensor recommends communication speeds of at least 100 kHz (max. 400 kHz). Please contact us for further information. tSU;DAT tHD;DAT tSU;STA tHD;STA tR tSU;STO tBUF tHD;STA tF SCL SDA tHIGH tLOW SCL SDA Fig. 2: Timing characteristics E / 11650 / G 6/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors PHYSICAL DIMENSIONS 4,10 HDI...F... (DIP, 2 ports same side) 6,23 3,40 0,25 2,68 2,30 15 15,70 11,90 3,41 2,54 9,28 5,08 0,63 7,60 first angle projection 18,75 19,50 R0 , 40 10,93 9,64 8,83 5,73 1,90 3,35 0,46 dimensions in mm 6,23 2,68 2,30 15 15,70 14,32 11,90 0,25 3,41 2,54 3,40 4,10 HDI...E... (SMD, 2 ports same side) R0 , 40 E / 11650 / G 0,63 4,69 7,79 9,89 8,60 2,31 0,46 0,86 5,08 7,60 18,75 19,50 first angle projection dimensions in mm 7/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors PHYSICAL DIMENSIONS (cont.) HDI...Z... (DIP, 1 port axial) 13,01 11,90 0,25 2,69 3,03 15 15,70 8 3,41 2,54 5,08 5,73 3,03 8,83 2,69 2 0,46 7,79 ±0,50 6,83 ±0,50 8 R0 ,8 0 15,70 ±0,50 high pressure port A 0,63 2,12 ±0,50 R 0, 40 first angle projection dimensions in mm HDI...Y... (SMD, 1 port axial) 7,79 8 3,41 2,54 0,25 2,69 3,03 14,32 15,70 15 11,90 5,08 0,63 15,79 4,69 0,96 0,46 first angle projection 40 0, R E / 11650 / G dimensions in mm 8/9 www.first-sensor.com www.sensortechnics.com HDI Series Amplified pressure sensors ELECTRICAL CONNECTION (cont.) HDI...A... (absolute) HDI...G... (gage) 4 5 6 3 2 1 Pin marking HDI...D... (differential) 6 5 4 4 5 6 1 2 3 Pin marking 3 2 1 High pressure port Pin 1 2 3 4 5 6 Connection +Vs +Vout GND SDA I / C* SCL * Internal connection. Do not connect for any reason Pin marking ORDERING INFORMATION Series Options HDI Pressure range Pressure mode B* Bidirectional M010 10 mbar G Gage R** Barometric M020 20 mbar M050 50 mbar M100 100 mbar M200 200 mbar M500 500 mbar B001 1 bar (B001A) 1 bara B002 2 bar B005 5 bar HDI Note: M050 U Unidirectional Housing F* DIP, 2 ports same side Porting Grade Voltage 8 Straight P Prime 5 5 V 3 3V E* SMD, 2 ports same side Z** DIP, 1 port axial Y** SMD, 1 port axial * only from 1 bar Example: Calibration 0611 600...1100 mbar A* Absolute 0811 800...1100 mbar D Differential G * only up to 1 bar ** for pressure ranges 0611, 0811 U * standard for differential devices, "D" ** standard for absolute and gage devices, "A" and "G" Z 8 P 5 Devices highlighted in grey are preferred stock items First Sensor reserves the right to make changes to any products herein. First Sensor 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. E / 11650 / G 9/9 www.first-sensor.com www.sensortechnics.com