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Gauge pressure transmitters for SMT Series/Type: ASR series Ordering code: Date: 2011-05-02 Version: 2.2  EPCOS AG 2009. Reproduction, publication and dissemination of this publication, enclosures hereto and the information contained therein without EPCOS' prior express consent is prohibited Content of header bars 1 and 2 of data sheet will be automatically entered in headers and footers! Please fill in the table and then change the color to "white". This ensures that the table disappears (invisible) for the customer PDF. Don't change formatting when entering or pasting text in the table and don't add any cell or line in and to it! Identification/Classification 1 (header 1 + top left bar): Pressure sensor Identification/Classification 2 (header 2 + bottom left header bar): Gauge pressure transmitters for SMT Ordering code: (top right header bar) Series/Type: (top right header bar) ASR series Preliminary data (optional): (if necessary) Preliminary data sheet Department: AS SEN PD TD Date: 2011-05-02 Version: 2.2 released / signed: PD released / signed: PM released / signed: QM released / signed: PPE Hundertmark

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 2 of 16 Important notes at the end of this document .

Description

/square6 Pressure sensor transmitters based on piezoresistive silicon pressure dies /square6 On board electronic for non-linearity and temperature error compensation /square6 Miniaturized SMD hybrid package (4.3 mm x 7.8mm x 3.5 mm)

Features

/square6 Analog ratiometric interface with adjustable output limits (clipping) or digital 14 bit I²C interface /square6 Diagnosis functions like loss of Vdd/Vss, bridge connections and short cuts /square6 High immunity against electromagnetic influences /square6 Plastic free surface mount technology for reflow soldering /square6 Conforming to RoHS Directive Options /square6 Pressure ranges up to 1.6 bar (23.2 psi) /square6 Other output characteristics and / or rated pressure ranges upon request Table of Contents

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 3 of 16 Important notes at the end of this document . 1. Technical Data Absolute maximum ratings Parameter Symbol Conditions Min. Max. Unit Temperature ranges Storage temperature range T st 1) -40 +125 ° C TN 2) -40 +85 ° C Operating temperature range T op TE 2) -40 +125 ° C Compensated temperature range T c 3), 4) 0 +70 ° C Soldering temperature T solder <10 s 260 ° C Pressure ranges Rated pressure range p r Gauge Pressure 4) 0 see ordering codes bar Overpressure p ov Gauge Pressure 5) 1.5 p r Burst pressure Gauge Pressure 3 p r Ambient pressure Absolute Pressure 200 (2.9) mbar (psi) Supply voltage /-current Supply voltage V supply 6) 2.7 5.5 V Supply current I supply I out = 0 2.5 mA Signal output current I out 7) 2 mA Start up time t STA 8) 10 ms

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 4 of 16 Important notes at the end of this document . Terminal assignment Dimensional drawings Pin Symbol Signal 1 - not connected

2 GND Ground

4 V supply Supply voltage

Output Characteristics Application Circuit pr,min pr,max Vout,min Vout,min + V FS pr,min pr,max Vout,min Vout,min + V FS Conversion Formula VR: ( ) min ,min , min ,max , rout Supply meas FS rr meas pVV V V ppp + −⋅−= ( ) ( ) min ,min , min ,max , rout meas FS rr meas pVVV ppp +−⋅−= GND

3 Vout

0.1µF GND 0.1µF0.1µF 2. Analog Output (VR/V1) Parameter Symbol Conditions Min. Typ. Max. Unit Analog output signal (VR/V1) @ Top = 25° C, V supply = 5 V, Iout < 0.1 mA VR: ratiometric 9) 10 %V CC Offset (at p r,min ) V out,0 V1: 0 … 1000 mV 9) 0 2.5 mV VR: ratiometric 10) 80 %V CC Signal span (Full Scale) V FS V1: 0 … 1000 mV 10) 1000 mV Full scale output at p r,max V out,0 + V FS VR: ratiometric 9), 10) 90 %V CC Diagnostic levels enabled upon request disabled Non-linearity L Simple output 10), 11) ±0.1 % FS Response time t 10-90 12) 2 ms Resolution r OUT 13) 12 bit Basic accuracy T op : 0 … 70° C ± 1.5 ± 2 % FS

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 5 of 16 Important notes at the end of this document . Terminal assignment Dimensional drawings Pin Symbol Signal

1 GND Ground

3 SCL Serial Clock

4 SDA Serial Data

  1. Digital Output – I²C (D5) Parameter Symbol Conditions Min. Typ. Max. Unit Digital output pressure signal (D5) @ T op = 25° C, V supply = 5 V, Iout < 0.1 mA Offset (at p r,min ) D P out,0 D5: I²C - 14bit 1638 digits Signal span (Full Scale) D P FS D5: I²C - 14bit 13107 digits Full scale output at p r,max DP out,0 + D P FS D5: I²C - 14bit 14745 digits Non-linearity L Simple output 10), 11) ±0.1 % FS Response time t 10-90 12) 2 ms Basic accuracy ± 1.5 ± 2 % FS Digital output temperature signal (D5) @ pr,min , V supply = 5 V, Iout < 0.1 mA Offset (at 0° C) D T out,0 D5: I²C - 11bit 512 digits Sensitivity D T S D5: I²C - 11bit 10.235 digits/K Basic accuracy T op : 0 … 70° C ± 2 ° C Configuration, digital interface System clock frequency 10 6 Hz Update period 1.5 ms I2C address 0x28 hex Sensor connection check active Sensor short check active Sleep Mode active

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 6 of 16 Important notes at the end of this document . Output Characteristics Application Circuit pressure: pr,min pr,max Dp out,min Dp out,min + D FS pr,min pr,max Dp out,min Dp out,min + D FS temperature: -50° C 150° C 0 digits 2047 digits 0° C 512 digits -50° C 150° C 0 digits 2047 digits 0° C 512 digits Conversion Formula pressure: ( ) ( ) min ,min , min ,max , r p out p meas p FS rr meas pDDD ppp +−⋅−= temperature: [ ] 235 .10 512 −=° T meas meas DCT GND SDA Vsupply SCL 0.1µF GND SDA Vsupply SCL 0.1µF Sleep Mode After the command window, the sensor’s signal proces sor will power down and fall into sleep mode. To wa ke up the sensor’s signal processor the master must send a Re ad_MR (measurement request operation) command or a Write_MR (reduced measurement request operation) command. After completion of the measurement cycle the data c an be transmitted via a data fetch operation and th e sensor’s signal processor will power down and fall into sleep mode again. POR Command Window Temperature Measurement Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Read_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 4.42 ms I²C measurement request operation (Read_MR) POR Command Window Temperature Measurement Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Read_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 4.42 ms I²C measurement request operation (Read_MR) POR Command Window Temperature Measurement Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Read_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 4.42 ms POR Command Window Temperature Measurement Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Read_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 4.42 ms I²C measurement request operation (Read_MR) POR Command Window Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Write_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 1.62 ms I²C reduced measurement request operation (Write_MR) POR Command Window Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Write_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 1.62 ms I²C reduced measurement request operation (Write_MR) POR Command Window Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Write_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 1.62 ms POR Command Window Pressure Measurement DSP Calcs. Power Down Power Down Temperature Measurement Sensor‘s Digital Signal Processor Activity Serial Interface Activity Power ON reserved Write_MR Wakes Sensor‘s Signal Processor Read_DF Invalid Values Write New Data To Output Register Read_DF Valid Reading Read_MR Wakes Sensor‘s Signal Processor Appr. 1.62 ms I²C reduced measurement request operation (Write_MR)

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 7 of 16 Important notes at the end of this document . I²C measurement request operation (Read_MR) The Read_MR command forces the sensor to wake up fr om sleep mode and to perform a complete measurement and calculation cycle. The Read_MR command is only cont aining the slave address and the READ bit (HIGH state ) both sent by the master. After the sensor responds with the slave ACK, the master must create a stop condition. S 6 5 4 3 2 1 0 R A Device Slave Address [0:6] Wait for Slave ACK S S R A S Start Condition Device Slave Address (0x28h) Read Bit (HIGH) Acknowledge (ACK) Stop Condition S 6 5 4 3 2 1 0 R A Device Slave Address [0:6] Wait for Slave ACK S S R A S Start Condition Device Slave Address (0x28h) Read Bit (HIGH) Acknowledge (ACK) Stop Condition I²C reduced measurement request operation (Write_MR) The Write_MR command forces the sensor to wake up f rom sleep mode and to perform only a pressure measu rement and calculation cycle. (Please Note: Obsolete, maybe inv alid, temperature data is used to calculate the pre ssure data. For using updated temperature data, please use the I²C measur ement request operation – Read_MR) The Write_MR com mand is faster then the Read_MR command, but perhaps result s are insufficient. The Write_MR command is only co ntaining the slave address and the WRITE bit (LOW state) both se nt by the master. After the sensor responds with the slave ACK, the master must create a stop condition. S 6 5 4 3 2 1 0 W A Device Slave Address [0:6] Wait for Slave ACK S S W A S Start Condition Device Slave Address (0x28h) Write Bit (LOW) Acknowledge (ACK) Stop Condition S 6 5 4 3 2 1 0 W A Device Slave Address [0:6] Wait for Slave ACK S S W A S Start Condition Device Slave Address (0x28h) Write Bit (LOW) Acknowledge (ACK) Stop Condition I²C data fetch operations For data fetch operations, the I²C master must star t with the 7bit slave address (0x28h) with the 8 th bit high (READ request). The sensor (I²C slave node) sends an acknowledge (AC K) indicating success. The sensor sends up to 4 data bytes depending on the master’s NACK. S 6 5 4 3 2 1 0 R A S15 14 13 12 11 10 9 8 A 7 6 5 4 3 2 1 0 A 10 9 8 7 6 5 4 A3 2 1 0 x x x x x N Device Slave Address [0:6] Wait for Slave ACK Pressure Data [13:8] Master ACK Pressure Data [7:0] Master ACK Temperature Data [10:3] Master ACK T. Data [2:0] reserved Master NACK S R A Start Condition Device Slave Address (0x28h) Read Bit Acknowledge (ACK) No Acknowledge (NACK) Status Bit Pressure Data Temperature Data x reserved S Stop Condition N S 6 5 4 3 2 1 0 R A S15 14 13 12 11 10 9 8 A 7 6 5 4 3 2 1 0 A 10 9 8 7 6 5 4 A3 2 1 0 x x x x x N Device Slave Address [0:6] Wait for Slave ACK Pressure Data [13:8] Master ACK Pressure Data [7:0] Master ACK Temperature Data [10:3] Master ACK T. Data [2:0] reserved Master NACK S R A Start Condition Device Slave Address (0x28h) Read Bit Acknowledge (ACK) No Acknowledge (NACK) Status Bit Pressure Data Temperature Data x reserved S Stop Condition N

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 8 of 16 Important notes at the end of this document . I²C Status Bits The sensor offers a full suite of diagnostic features to ensure robust system operation. The diagnostic states are indicated by a transmission of the status of the 2 MSBs of the pressure high byte data. Status Bits Definition

00 Normal operation, good (fresh) data packet

01 Reserved

10 Stale data: Data that has already been fetched si nce the last measurement cycle

11 Internal error occurred

I²C data fetch example S R A Start Condition Device Slave Address (0x28h) Read Bit Acknowledge (ACK) No Acknowledge (NACK) Status Bit Pressure Data Temperature Data x reserved S Stop Condition N S 0 1 0 1 0 0 0 1 A S0 0 0 0 0 1 1 0 A 0 1 1 0 0 1 1 0 A 0 1 0 1 1 0 0 A1 1 0 1 x x x x x N Device Slave Address 0x28h Pressure Data 00011001100110 = 0x666h = 1638d /barb2right0 mbar (rel.) Temperature Data 01011001101 = 0x2CDh = 717d /barb2right20 °C Status Bits 00 /barb2rightnormal operation, fresh data package S R A Start Condition Device Slave Address (0x28h) Read Bit Acknowledge (ACK) No Acknowledge (NACK) Status Bit Pressure Data Temperature Data x reserved S Stop Condition N S 0 1 0 1 0 0 0 1 A S0 0 0 0 0 1 1 0 A 0 1 1 0 0 1 1 0 A 0 1 0 1 1 0 0 A1 1 0 1 x x x x x N Device Slave Address 0x28h Pressure Data 00011001100110 = 0x666h = 1638d /barb2right0 mbar (rel.) Temperature Data 01011001101 = 0x2CDh = 717d /barb2right20 °C Status Bits 00 /barb2rightnormal operation, fresh data package S 0 1 0 1 0 0 0 1 A S0 0 0 0 0 1 1 0 A 0 1 1 0 0 1 1 0 A 0 1 0 1 1 0 0 A1 1 0 1 x x x x x N Device Slave Address 0x28h Pressure Data 00011001100110 = 0x666h = 1638d /barb2right0 mbar (rel.) Temperature Data 01011001101 = 0x2CDh = 717d /barb2right20 °C Status Bits 00 /barb2rightnormal operation, fresh data package I²C protocol limitations Please note:

  • Sending a start-stop condition without any transiti on on the CLK line (no clock pulses in between) crea tes a communication error for the next communication, eve n if the next start condition is correct and the cl ock pulse is applied. An additional start condition must be sent, which results in restoration of proper communication.
  • The restart condition – a falling SDA edge during da ta transmission when the CLK line is still high – cr eates the same situation. The next communication fails, and a n additional start condition must be sent for corre ct communication.
  • A falling SDA edge is not allowed between the start c ondition and the first rising SCL edge. If using an I²C address with the first bit 0, SDA must be held low from the start condition through the first bit.
  • If a data fetch is performed before or during the first measurement after power-on reset (POR), the f etched data is invalid, even though the status bits report it as “valid” or “stale”.

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 9 of 16 Important notes at the end of this document . 4. Total Error (Temperature Error Multiplier) The output accuracy over the whole temperature rang e can be calculated by multiplying the basic accura cy with a temperature dependant factor as shown in the following graph. Temperature error multiplier 0,0 0,1 0,2 0,3 0,4 0,5 0,6 0,7 0,8 0,9 1,0 1,1 1,2 1,3 1,4 1,5 1,6 1,7 1,8 1,9 2,0 -40 -35 -30 -25 -20 -15 -10 100 105 110 115 120 125 Temperature [° C] Temperature error multiplier 5. Pressure Feed p = p 2 - p 1 p 1: ambient (athmospheric) pressure p 2: system pressure p: pressure corresponding to output signal 6. Board Layout (Recommendation)

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 10 of 16 Important notes at the end of this document . 7. Reliability Testing Performed Tests: Test Standard Test conditions Early Life Failure Rate (ELFR) following to AEC-Q100-008 - Storage for 24h at +105° C Preconditioning (PC) following to AEC-Q100, JEDEC J-STD-020 and JEDEC JESD22-A113 - Parts from ELFR test - 5 cycles shipping conditions (-40° C to +60° C) - Bake 24h at +125° C - Soak 192h at +30° C and 60% r.h. - Apply 3 reflow soldering cycles High Temperature Storage Life (HTSL) following to AEC-Q100 and JEDEC JESD22-A103 - Parts from PC test - Storage for 1000h at +125° C - Unpowered High Temperature Operating Life (HTOL) following to AEC-Q100 and JEDEC JESD22-A108 - Parts from ELFR test - Operating for 408h at +105° C - Powered with V supply at +5VDC Variable Frequency Vibration Test (VFV) following to AEC-Q100 and JEDEC JESD22-B103 - Parts from ELFR test - Logarithmic sweep from 20Hz to 2KHz to 20Hz within 4min - Max. acceleration at 50g - 4 x 4min in each orientation (total 144min) Mechanical Shock Test (MS) following to AEC-Q100 and JEDEC JESD22-B104 - Parts from ELFR test - 5 pulses with 1, 500g peak acceleration in positive vertical direction - Peak duration 0.5ms Pressure Cycle Test (Internal standard) - Parts from ELFR test - 1,000,000 pressure cycles between minimum rated pressure (p r,min ) and overpressure (p ov ) - Test performed at room temperature Test Criterion: All sensors have to be within the specified tolerances before and after each test listed below.

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 11 of 16 Important notes at the end of this document . 8. Product Key AS R 1.600 VR TN H30 KXXXX Customer Specific Index Optional, reserved Pressure Feed Reserved Operating Temperature Range TN TE Normal Temperature Range (-40° C … +85° C) Extended Temperature Range (-40° C … +125° C) Output signal VR 0 ... 1 V I²C (pressure 14 bit / temperature 11 bit) Rated pressure range available: 0.400 bar (5.8 psi) 0.600 bar (8.7 psi) 1.000 bar (14.5 psi) 1.600 bar (23.2 psi) Measuring type R Gauge (Relative) Sensor type AS Advanced Surface Mount Technology 9. Ordering Codes Normal Temperature Range Extended Temperature Range Rated Pressure pr [bar] ([psi]) Ratiometric 0..1000 mV I²C (14 bit) Ratiometric 0.. 1000 mV I²C (14 bit) 0.400 (5.8) n/n (ASR 0.400 VR TN H30) n/n (ASR 0.400 V1 TN H30) n/n (ASR 0.400 D5 TN H30) n/n (ASR 0.400 VR TE H30) n/n (ASR 0.400 V1 TE H30) n/n (ASR 0.400 D5 TE H30) 0.600 (8.7) n/n (ASR 0.600 VR TN H30) n/n (ASR 0.600 V1 TN H30) n/n (ASR 0.600 D5 TN H30) n/n (ASR 0.600 VR TE H30) n/n (ASR 0.600 V1 TE H30) n/n (ASR 0.600 D5 TE H30) 1.000 (14.5) n/n (ASR 1.000 VR TN H30) n/n (ASR 1.000 V1 TN H30) n/n (ASR 1.000 D5 TN H30) n/n (ASR 1.000 VR TE H30) n/n (ASR 1.000 V1 TE H30) n/n (ASR 1.000 D5 TE H30) 1.600 (23.2) n/n (ASR 1.600 VR TN H30) n/n (ASR 1.600 V1 TN H30) n/n (ASR 1.600 D5 TN H30) n/n (ASR 1.600 VR TE H30) n/n (ASR 1.600 V1 TE H30) n/n (ASR 1.600 D5 TE H30)

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 12 of 16 Important notes at the end of this document . 10. Packaging Tape and reel packing comply with specifications of IEC 60286-3. Tape: Reel: To be defined

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 13 of 16 Important notes at the end of this document . 11. Reflow Soldering Recommended temperature characteristic for reflow soldering following JEDEC J-STD-020D Profile feature Sn-Pb eutectic assembly Pb-free as sembly Preheat and soak - Temperature min - Temperature max - Time T smin Tsmax tsmin to t smax 100 ° C 150 ° C 60 … 120 s 150 ° C 200 ° C 60 … 180 s Average ramp-up rate T smax to T p 3 ° C/s max. 3 ° C/s max. Liquidous temperature Time at liquidous T L tL 183 ° C 60 … 150 s 217 ° C 60 … 150 s Peak package body temperature T p A) 220 ° C … 235 ° C B) 245 ° C … 260 ° C B) Time (t p)3) within 5 ° C of specified classification temperature (T c) 20 s C) 30 s C) Average ramp-down rate T p to T smax 6 ° C/s max. 6 ° C/s max. Time 25 ° C to peak temperature maximum 6 min maxim um 8 min A) Tolerance for peak profile temperature (T p) is defined as a supplier minimum and a user maximum. B) Depending on package thickness. For details please refer to JEDEC J-STD-020D. C) Tolerance for time at peak profile temperature (t p) is defined as a supplier minimum and a user maximum.

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 14 of 16 Important notes at the end of this document . Symbols and terms 1) Storage temperature range T st A storage of the pressure sensor within the temperature range Tst,min up to T st,max and without applied pressure and supply voltage will not affect the performance of the pressure sensor. 2) Operating temperature range T op An operation of the pressure sensor within the temperature range Top,min up to Top,max will not affect the performance of the pressure sensor. 3) Compensated temperature range T c While operating the pressure sensor within the temperature range Tc,min up to T c,max , the deviation of the output signal from the values at 25 ° C will not exceed the temperature coefficients. Out of the compensated temperature range, the deviations may increase. 4) Rated pressure p r Within the rated pressure range 0 up to p r,max the signal output characteristic corresponds to this specification. 5) Overpressure p OV Pressure cycles within the pressure range 0 up to p ov will not affect the performance of the pressure sensor. 6) Supply voltage V supply Vsupply,max is the maximum permissible supply voltage, which can be applied without damages. Vsupply,min is the minimum required supply voltage, which has to be applied for normal operation. 7) Signal output current I A IA,max is the maximum permissible sink current of the signal output. Exceeding (e.g. short circuit) may cause irreparable damages. 8) Start up time t STA Time between the start up of the normal operation after power on and the first valid output signal. 9) Offset V out,0 The offset V out,0 is the signal output V A(p = 0) at zero pressure. 10) Signal span (F ull Scale) Simple output: V FS = FS = V out (p r,max ) – V A0 11) Non-linearity L (including pressure hysteresis) The non-linearity is the deviation of the real sensor characteristic VA = f(p) from the ideal straight line. It can be approximated by a polynomial of second order, with the maximum at p x = p r / 2 . The equation to calculate the non-linearity is: r x out rout out xout p p VpV VpVL −− 0 , 0 , 12) Response time t 10-90 13) Resolution r OUT The resolution of the output DAC (digital/analog converter). For ratiometric output only 80% of DAC range is used.

Gauge pressure transmitters for SMT ASR series Preliminary data sheet AS SEN PD TD 2011-05-02 Please read Cautions and warnings and Page 15 of 16 Important notes at the end of this document . Cautions and warnings Storage The pressure sensors should be stored in their original packaging. They should not be placed in harmful environments such as corrosive gases nor exposed to heat or direct sunlight, which may cause deformations. Similar effects may result from extreme storage temperatures and climatic conditions. Avoid storing the pressure sensors in an environment where condensation may form or in a location exposed to corrosive gases, which will adversely affect their performance. Soldering The thermal capacity of the pressure sensor is normally low, so steps should be taken to minimize the effects of external heat. High temperatures may lead to damage or changes in characteristics. A no-clean flux should normally be used. Flux removal processes are not recommended. Avoid rapid cooling due to dipping in solvent. Note that the output signal may change if pressure is applied to the terminals during soldering. Operation Media compatibility with the pressure sensors must be ensured to prevent their failure (see page 2). The use of other media can cause damage and malfunction. Never use them in atmospheres containing explosive liquids or gases. Ensure pressure equalization to the environment, if relative pressure sensors are used. Avoid operating the pressure sensors in an environment where condensation may form or in a location exposed to corrosive gases. These environments adversely affect their performance. If the operating pressure is not within the rated pressure range, it may change the output characteristics. Be sure that the applicable pressure does not exceed the overpressure, it may damage the pressure sensor. Do not exceed the maximum rated supply voltage, it may damage the pressure sensor. Do not exceed the rated storage temperature range, it may damage the pressure sensor. Temperature variations in both the ambient conditions and the media (liquid or gas) can affect the accuracy of the output signal from the pressure sensors. Be sure to check the operating temperature range and thermal error specification of the pressure sensors to determine their suitability for the application. Connections must be wired in accordance with the terminal assignment specified in this publication. Care should be taken as reversed pin connections can damage the pressure sensors or degrade their performance. Contact between the pressure sensor terminals and metals or other materials may cause errors in the output characteristics. This listing does not claim to be complete, but merely reflects the experience of EPCOS AG.

The following applies to all products named in this publication: 1. Some parts of this publication contain statements about the suitability of our products fo r certain areas of application . These statements are based on our knowledge of ty pical requirements that are often placed on our products in the areas of application concerned. We nevertheless expressly point out that such statements cannot be regarded as binding statements about the suitability of our products fo r a particular customer application. As a rule, EPCOS is either unfamiliar with individual cu stomer applications or less familiar with them than the customers themselves. For these reasons, i t is always ultimately incumbent on the customer to check and decide whether an EPCOS produ ct with the properties described in the product specification is suitable for use in a particular customer application. 2. We also point out that in individual cases, a malfunction of electronic c omponents or failure before the end of their usual service life cannot be completely ruled out in the current state of the art, even if they are operated as specified. In customer applications requiring a very high level of operational safety and especially in custo mer applications in which the malfunction or failure of an electronic component could endanger h uman life or health (e.g. in accident prevention or life-saving systems), it must therefore be ensured by means of suitable design of the customer application or other action taken by the c ustomer (e.g. installation of protective circuitry or redundancy) that no injury or damage is sustained by third parties in the event of malfunction or failure of an electronic component. 3. The warnings, cautions and product-specific notes must be observed. 4. In order to satisfy certain technical requiremen ts, some of the products described in this publication may contain substances subject to restr ictions in certain jurisdictions (e.g. because they are classed as hazardous) . Useful information on this will be found in our Material Data Sheets on the Internet (www.epcos.com/material ). Should you have any more detailed questions, please contact our sales offices. 5. We constantly strive to improve our products. Co nsequently, the products described in this publication may change from time to time . The same is true of the corresponding product specifications. Please check therefore to what exte nt product descriptions and specifications contained in this publication are still applicable before or when you place an order. We also reserve the right to discontinue production and delivery of products . Consequently, we cannot guarantee that all products named in this publication will always be available. The aforementioned does not apply in the case of in dividual agreements deviating from the foregoing for customer-specific products. 6. Unless otherwise agreed in individual contracts, all orders are subject to the current version of the “General Terms of Delivery for Products and Ser vices in the Electrical Industry” published by the German Electrical and Electronics Industry Association (ZVEI) . 7. The trade names EPCOS, BAOKE, Alu-X, CeraDiode, CSMP, CSSP, CTVS, DSSP, MiniBlue, MKK, MLSC, MotorCap, PCC, PhaseCap, PhaseCube, Phas eMod, SIFERRIT, SIFI, SIKOREL, SilverCap, SIMDAD, SIMID, SineFormer, SIOV, SIP5D, SIP5K, ThermoFuse, WindCap are trademarks registered or pending in Europe and in other countries. Further informat ion will be found on the Internet at www.epcos.com/trademarks.