KP275

KP275 INFINEON | Alldatasheet

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dTurboTMAP with SENT Output and Temperature Sensor Interface KP275 DigitalTurboTMAP Sense & Control Data Sheet Revision 1.0, 2016-06-20

Data Sheet 2 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Table of Contents

Digital Absolute Pressure Sensor Data Sheet 3 Revision 1.0, 2016-06-20 List of Tables

Product Name Product Type Ordering Code Package dTurboTMAP with SENT Output and Temperature Sensor Interface KP275 SP000973736 PG-DSOF-8-162 Data Sheet 5 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor

1 Product Description

The KP275 is a miniaturized Digital Absolute Pressure Sensor IC based on a capacitive principle. It is surface micromachined with a monolithic integrated signal co nditioning circuit implemented in BiCMOS technology. The sensor converts a pressure into a 12-bit digital value and sends the information via the SENT protocol (SAE J2716 revised Jan. 2010). In addition, an interface for an external negative temperature coefficient (NTC) temperature sensor is prov ided. The temperature information given by the NTC is also digitized into a 12-bit value and transmitted with the SENT protocol. A special safety feature is the integr ated diagnostic mode, which allows te sting of the sensor cells as well as the signal path. This diagnosis is triggered by powering the device. The chip is packaged in a “green” media robust SMD housing. The sensor has been primarily developed for measuring manifold air pressure, but can also be used in other application fields. The high accuracy, high sensitivity and safety features of the device makes it a perfect fit for advanced automotive applications as well as in industrial and consumer applications.

1.1 Features

The following features are provided by the KP275:

• Increased media robustness for current automotive requirements
• High accuracy pressure sensing ( ± 0.77% FSS)
• Integrated signal processing for external temperature sensor
• SENT protocol interface
• Real 12-bit pressure resolution
• Real 12-bit temperature resolution
• Self diagnosis features
• “Green” 8 pin SMD housing
• Automotive qualified

1.2 Target Applications

The KP275 is designed for use in the following target applications:

• Automotive applications, Industrial control
• Consumer applications, Medical applications

Data Sheet 6 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2 Functional Description

2.1 Pin Configuration

Figure 1 shows the pin configuration. Figure 1 Pin configuration (top view, figure not to scale)

2.2 Pin Description

Table 1 shows the pin description. Table 1 Pin description Pin No. Name Function Comment

1 NCS Not-Chip-Select (activ e-low) Communication is enabled when NCS is low 1)

1) SPI pins (pin1 - pin4) are used only during calibration and test. It is recommended to leave these pins floating in the application.

2 CLK Serial Clock External clock for serial communication 1)

3 SDI Serial Data In Serial data input (e.g. from a controller)1)

4 SDO Serial Data Out Tri-state serial data output 1)

5V DD Supply voltage – 6S E N T OUT SENT output Digital Output of the SENT Interface 7N T C IN NTC Input Input pin for an external NTC 8G N D G r o u n d – GND NTCIN SENTOUT VDD SDI NCS CLK SDO

Data Sheet 7 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.3 Block Diagram

Figure 2 shows the functional block diagram. Figure 2 Functional block diagram

2.4 Transfer Function Pressure

The KP275 device is fully calibrated on delivery. The sensor has a linear transfer function between the applied pressure and the digital output signal. Figure 3 Pressure transfer function Pressure Cells ADC Digital Signal Processing Normal Mode/ Diagnosis Mode Temperature Compensation Digital Core (iSM) SPI Interface E²PROM Interface E²PROM Voltage Regulator digital analog Reset VDDA VDDD NCS CLK SDI SDO GND SENTOUT VDD NTCIN Buffer Amplifier (Interface Driver) ROM NTC Conditioning MUX pressure [kPa] 1000 4088 40 80 120 160 200 240 280 operatingpressure range 320 360 400 output signal [LSB] Zoom 3896 2000 3000 193 44010

Data Sheet 8 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.4.1 Pressure Transfer Function Characteristics

The following calibration is adjusted with the parameters Sp and offsp Clamping The output signal for pressure is limited internally to clamping level low (output code 1) and clamping level high (output code 4088).

2.4.2 Pressure Accuracy

Figure 4 Accuracy for pressure acquisition Table 2 Pressure transfer function characteristics Output Code Pressure Gain and Offset Symbol Values Unit Symbol Values Unit Symbol Value Unit p IN,1 10 kPa LSBOUT,1 193 LSB Sp 9.495 LSB/kPa pIN,2 400 kPa LSBOUT,2 3896 LSB offsp 98.05 LSB p pp amb S offsoutp −= absolute error [kPa] -40 0 temperature [°C] 1.79 1.28 1.03 85 150 -40 0 85 150 temperature [°C] Pressure range 40 … 150 kPa Pressure range 10 … 40 kPa 150 … 400 kPa 0.77 2.05 0.26 0.51 1.54 Relative error [%FSS] 1.79 1.28 1.03 0.77 2.05 0.26 0.51 1.54 kPa%

Data Sheet 9 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.5 Transfer Function Temperature

Figure 5 Temperature transfer function

2.5.1 Temperature Transfer Function Characteristics

The following calibration is adjusted with the parameters ST and offsT: Table 3 Temperature transfer function characteristics Temperature Output Code Gain and Offset Symbol Values Unit Symbol Values Unit Symbol Value Unit T IN,1 -40 °C LSBOUT,1 265 LSB ST 8.0 LSB/°C TIN,2 170 °C LSBOUT,2 1945 LSB offsT 585.2 LSB operating temperature range output signal [LSB] temperature [°C] -40 150 Zoom 1785 265 05 0 1 0 0 operating peak temperature range 170 1945 -50 185 T TT amb S offsoutT −=

Data Sheet 10 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.6 SENT Interface

The SENT interface enables communi cation according to the SENT (S ingle Edge Nibble Transmission) Specification. The SENT protocol sp ecifies the transmission of informat ion in a series of pulses with data encoded as falling edge to falling ed ge periods. Each following pulse is called a nibble. The SENT interface transmits messages organized in frames. Each frame consists of several pulses which are delimited by falling edges. Each falling edge marks the start of a new nibble.

2.6.1 Physical Layer

The physical layer provides the method of transferring digital data encoded as time between two falling edges of a signal through the communication medium. It co nsists of power, ground and the signal wire (see Figure 16 “Application circuit example” on Page 20). The basic unit of time for the SENT interface is called a clock tick. The transmission bit rate depends on the data value sent and the sensor cloc k tolerance. The shortest length of a nibble pulse consists of 12 ticks (nominally 36 µs), the maximum length is 27 ticks (nominally 81 µs). Figure 6 shows the physical layer specification of a nibble. Figure 6 Physical layer specification of a nibble

2.6.2 Data Link Layer

The SENT interface has two channels for transmitting information:

• Fast Channel
• Slow Channel The fast channel represents the information transmitted in the data pulses of the SENT frame. Within a single SENT frame a full pressure code and full NTC code is transmitted. The slow channel represents the information transmitted within the Status and Serial Communication nibble. On this channel information is transmitted over several SENT frames (4 bits per SENT frame). This information consists of diagnostic codes and serial messages. time voltageVOH VOL 3.8 V 1.1 V tfall trise >4 ticks n ticks + ∆tfall

Data Sheet 11 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description The SENT frame starts with a Sync hronization and Calibration pulse wh ich is used by the receiver to synchronize with the frame and to create a reference for the length measurement of the following nibbles. The Synchronization pulse is followed by a Status and Serial Communication nibble. The value coded in this nibble represents a series of 4 bits. While bit #0 and bit #1 are reserved, bit #2 and bit #3 are used to communicate serial messages. The message transmitted by the KP275 comprehends two fast channels. Each channel is segmented in 3 data nibbles; every nibble includes 4 bits. The 12 bit pressure information is transmitted by the first fast channel, the 12 bit temperature information of the NTC by the second fast channel. Figure 7 Message transmission The pause pulse is used to create a SENT transmission with a constant frame length of 333 clock ticks (999 µs).

2.6.2.1 Nibble Specification

A nibble contains 4 bit data content. The length of a nibble defines the content of the 4 bits. The global timing of a nibble is based on ticks. The length of a tick is specified as 3 µs. The following formula defines the number of ticks (nticks) based on the nibble content (datanibble). Figure 8 shows the nibble timing. time VSEN T 56 ticks 12 – 27 ticks 999 µs synchronization pulse status & communication nibble pressure data nibble 1 pressure data nibble 2 pressure data nibble 3 temperature data nibble 1 temperature data nibble 2 temperature data nibble 3 CRC nibble pause pulse 1st fast channel 2 nd fast channel MSN MidN LSN LSN MidN MSN 12 – 27 ticks 12 – 27 ticks 12 – 27 ticks 12 – 27 ticks 12 – 27 ticks 12 – 27 ticks 14 – 25 ticks MSN: most significant nibble (bit 11:8) MidN: middle nibble (bit 7:4) LSN: least significant nibble (bit 3:0) 63 –179 ticks nibbleticks 12 datan +=

Data Sheet 12 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description Figure 8 Nibble timing

2.6.2.2 Status & Communication Nibble

This nibble is reserved to enable the sensor to transmit different information such as part numbers or error code information. The nibble is defined in the following table: The serial message channel (slow message channel) is implemented as enhanced serial message format.

2.6.2.2.1 Enhanced Serial Message Format

Bit #2 and #3 of the status and communication nibble are used for serial data transmission. A serial message stretches over 18 consecutive SENT data messages. All 18 messages must be successfully received for the serial value to be valid. The frame start of a serial message is indicated by the unique pattern “1111110” in bit #3 of the status and communication nibble, Figure 10. The first “1” in a series of six “1” (after a “0”) indicates the first nibble of a serial message. Serial data bit #3 of serial communicatio n nibble 1 - nibble 6 are set to “1”, Serial data bit #3 of serial communication nibbles 7, 13 and 18 are set to “0”. The serial message contains 20 bits of payload data. The communication is defined by the configuration bit (serial data bit #3, serial communication nibble No.8), configuration bit = 0”:

• 12 bit data and 8 bit message ID Table 4 Status nibble description Status Nibble Bit Function

0 Pressure channel error flag

1 Temperature channel error flag

2 Serial message bit: Serial message data bit

3 Serial message bit: Indicates the start of a serial message

time [µs] ticks nibble value 0> 4 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 0 >12 36 39 42 45 48 51 54 57 60 63 66 69 72 75 78 81 0d 1d 2d 3d 4d 5d 6d 7d 8d 9d 10d 11d 12d 13d 14d 15d 0000b 0001b 0010b 0011b 0100b 0101b 0110b 0111b 1000b 1001b 1010b 1011b 1100b 1101b 1110b 1111b

Data Sheet 14 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.6.2.2.2 Enhanced Serial Message Data

The following 28 serial messages are transmitted over the slow channel and continuously repeated: Figure 11 ESM cycle Table 5 Slow message channel data Message Number Message ID Definition 12 bit data EEPROM programmable 1 $01 Diagnostic error codes - - 2 $03 Sensor type Channel 1/2 Pressure/Temperature 0x007 no 3 $04 Configuration Code 0x001 no 4 $05 Manufacturer Code 0x049 no 5 $06 SENT standard version 0x003 no 6 $07 Fast channel 1 characteristic X 1, (X1=pIN,1) 0x053 yes 7 $08 Fast channel 1 characteristic X 2, (X2=pIN,2) 0x144 yes 8 $01 Diagnostic error codes - - 9 $81 defined by OEM/Supplier yes 10 $23 Supplementary data channel #4,1 0x000 no 11 $09 Fast channel characteristic Y 1, default 0x0C1 no 12 $0A Fast channel characteristic Y 2, default 0xF38 no 13 $29 Sensor ID #1 yes 14 $80 defined by OEM/Supplier yes 15 $01 Diagnostic error codes - - 16 $2A Sensor ID #2 yes 17 $2B Sensor ID #3 yes 18 $2C Sensor ID #4 yes 19 $82 OEM/Supplier 0x000 no 20 $90 OEM part number 0x000 no 21 $91 OEM part number 0x000 no 22 $01 Diagnostic error codes - - 23 $92 OEM part number 0x000 no 24 $93 OEM part number 0x000 no 25 $94 OEM part number 0x000 yes 26 $95 OEM part number 0x000 yes 27 $96 OEM part number 0x000 yes 28 $97 OEM part number 0x000 yes 123 4 5 6 7 8 9 1 01 11 21 31 4 15 16 17 18 19 20 21 22 23 24 25 26 27 28 01 03 04 05 06 07 0801 81 23 09 0A 29 8001 2A 2B 2C 82 90 9101 92 93 94 95 96 97 123 4

Data Sheet 15 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.6.3 Pressure Channel Output Codes

Table 6 gives an overview about the pressure channel data content. Note: Status Nibble Bit #0 is calculated at start of every frame. Status value for slow channel is calculated at start of every slow channel status message (ID$01). Table 6 Pressure channel data content Code [dec] Code [bin] Data Nibble 1 D ata Nibble 2 Data Nibble 3 Description 0 0000 0000 0000 12 ticks 12 ticks 12 ticks invalid value 1 0000 0000 0001 12 ticks 12 ticks 13 ticks Clamping low 2 0000 0000 0010 12 ticks 12 ticks 14 ticks min. pressure output 4087 1111 1111 0111 27 ticks 27 ticks 19 ticks max. pressure output 4088 1111 1111 1000 27 ticks 27 ticks 20 ticks Clamping high 4089 1111 1111 1001 27 ticks 27 ticks 21 ticks invalid value 4090 1111 1111 1010 27 ticks 27 ticks 22 ticks diagnostic error 4091 1111 1111 1011 27 ticks 27 ticks 23 ticks invalid value 4092 1111 1111 1100 27 ticks 27 ticks 24 ticks invalid value 4093 1111 1111 1101 27 ticks 27 ticks 25 ticks invalid value 4094 1111 1111 1110 27 ticks 27 ticks 26 ticks invalid value 4095 1111 1111 1111 27 ticks 27 ticks 27 ticks invalid value Table 7 Error indication for Pressure channel Pressure kPa Fast channel 1 LSB slow channel ID$01 Status Nibble Bit 0

Description

P < -10 1 002 H 1c l a m p i n g l o w -10 ≤ P < 10 2 ≤ code ≤ 192 002 H 0 reduced signal accuracy 10 ≤ P ≤ 400 193 ≤ code ≤ 3896 000 H 0 signal range 400 < P < 420 3897 ≤ code ≤ 4087 001 H 0 reduced signal accuracy 420 ≤ P 4088 001 H 1 clamping high

Data Sheet 16 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.6.4 Temperature Channel Output Codes

Table 8 gives an overview about the temperature channel data content. Note: 1. The output code for fast channel 2 is limited by the NTC resistance value. 2. Status Nibble Bit #1 is calculated at start of every frame. Status value for slow channel is calculated at start of every slow channel status message (ID$01). Table 8 Temperature channel data content Code [dec] Code [bin] Data Nibble Data Nibble Data Nibble 0 0000 0000 0000 12 ticks 12 ticks 12 ticks initialization 1 0000 0000 0001 12 ticks 12 ticks 13 ticks -73°C 185 0000 1011 1001 12 ticks 23 ticks 21 ticks min. temperature 1) (-50°C) 1) min/max temperature output depends on external NTC due to limitation of measurement range for NTC resistance, see Table 18 2025 0111 1110 1001 19 ticks 26 ticks 21 ticks max. temperature 1) (180°C) 4088 1111 1111 1000 27 ticks 27ticks 20 ticks 438°C 4089 1111 1111 1001 27 ticks 27 ticks 21 ticks invalid value 4090 1111 1111 1010 27 ticks 27 ticks 22 ticks diagnostic error 4091 1111 1111 1011 27 ticks 27 ticks 23 ticks invalid value 4092 1111 1111 1100 27 ticks 27 ticks 24 ticks invalid value 4093 1111 1111 1101 27 ticks 27 ticks 25 ticks invalid value 4094 1111 1111 1110 27 ticks 27 ticks 26 ticks invalid value 4095 1111 1111 1111 27 ticks 27 ticks 27 ticks invalid value Table 9 Error indication for Temperature channel Temperature Fast channel 2 LSB slow channel ID$01 Status Nibble Bit 1 T < -50 code < 185 805 H 1 Temperature too low -50 ≤ T < -40 185 ≤ code ≤ 265 000 H 0 Accuracy undefined -40 ≤ T ≤ 170 266 ≤ code ≤ 1945 000 H 0 Temperature range 170 < T ≤ 180 1946 ≤ code ≤ 2025 000 H 0 Accuracy undefined T > 180 code > 2025 804 H 1 Temperature too high

Data Sheet 17 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.6.5 Diagnostic Error Codes

After power on, a system self check is started. During this initialization phase th e following internal sensor checks are performed:

• Pressure out of range
• Signal path check (Diag1)
• Sensor cell check (Diag2)
• E 2PROM check The signal range is continuously monitored and ‘Signal out of range’ is transmitted with every SENT frame. Pressure out of range is tr ansmitted over fast channel1, temperatur e out of range is transmitted over fast channel2 If an internal malfunction is detected, the error code 4090 is transmitted over fast channel1 and fast channel2. The error type is transmitted over the slow message channel (Diagnostic Error Code), see Table 10. If more than one error is detected, only the diagnosis code with the highest priority will be sent. Note: Diagnostic error code is updated with start of every new status message ID.

2.6.5.1 Signal out of range

The signal ranges are monitored during normal operation mode. If the pressure value is below the minimum operating pressure range or exceeds the maximum operating pressure range the error code “Pressure out of range low/high” is transmitted. The limits are defined in Table 7. If the NTC temperature is below the minimum operatin g temperature or NTC resistor exceeds the maximum resistance value of NTC “Temperature out of range low” is transmitted. If the NTC temperature exceeds the maximum operating temperature or NTC resistor is below minimum resistance value the error code “Temperature out of range high” is transmitted. The limits are defined in Table 9, the resistance values of NTC are defined in Table 18.

2.6.5.2 Diag1

The Diag1 test checks the functional ity of the signal path. Therefore th e inputs of the sigma delta ADC are shorted. Afterwards, the system response is compared with the expected range (~ 50% of full scale range). If the system response is out of range, the diagnostic error code “Internal Error” is set. Table 10 Diagnostic Error Codes Description Priority 1) 1) Priority 5: high, priority 1: low Fast Channel1 Code Fast Channel2 Code Diagnostic Error Code Normal Operation/Initialization data data 000 H no error Internal Error 5 4090 4090 A05 H Pressure out of range high 4 4088 001 H Pressure out of range low 3 1 002 H Temperature out of range high 2 >2025 804 H Temperature out of range low 1 <185 805 H

Data Sheet 18 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description Figure 12 Diag1 functionality

2.6.5.3 Diag2

The Diag2 test checks the functionality of the pressu re sensor cells. Therefore a malfunction (e.g. broken membrane) can be detected. The KP 275 pressure sensing el ement is made of 2 measuring cells and 2 reference cells. In the normal mode these four cells ar e connected in a Wheatstone bridge configuration. In the Diag2 mode, the connection of th e cells is modified as shown in Figure 13. If Diag2 value is out of range, the diagnostic error code “Internal Error” is set. Figure 13 Diag2 functionality

2.6.5.4 E 2PROM Check

During the initialization phase the content of the E 2P R O M c e l l s i s c o p i e d i n t o t h e c o r r e s p o n d i n g E2PROM registers. Thereby, a parity check is done based on the parity row and column. A one bit error is corrected by the forward error correction. Any additional bit error results in an “Internal Error”.

2.6.6 Definition of Pressur e Signal Path Latency

Figure 14 Pressure signal path latency t path_pres (pressure settling time) The pressure value is calculated at start of the SENT frame and is transmitted once per frame. ΣΔ ADC Decimation Filter U = f (p) p p Normal Operation U = f (p) pp Diag2 Mode A/D Digital Filter FW PLIN SENT Driver SENSOR Signal path latency Constant response relative to SENT frame Pressure freeze SENT RX SENT pin

Data Sheet 19 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Functional Description

2.7 External Temperature Sensor

The KP275 can be connected to an external temperature sensor at pin NTCIN. A reference voltage is applied to the NTC and the current through the NTC is used to determine the temperature. The internal signal processing of the KP275 makes it a perfect fit for using standard NTC temperature sensors. The current through the NTC is changed in a way to have a linear temperature transf er function within the SENT protocol. To avoid errors through self heating of the NTC, the power consumption is limited.

2.7.1 Linearization of the External Temperature Sensor Transfer Function

The resistance of NTC thermistors is a nonlinear fu nction of the temperatur e. The used method for mathematical modelling of the resistance R versus temperature T is the Steinhart-Hart Equation: The Steinhart-Hart coefficients for a selected NTC are coded in the E2PROM. Evaluation of accuracy is included for the following thermistor: Note: The resistance range of the NTC is limited, see Table 18.

2.7.2 Accuracy for NTC signal processing

The accuracy of the signal processing for external temperature sensors depends on the resistance value and the nonlinearity of the connected NTC. In Figure 15 the absolute error is displayed graphically, all errors due to the integrated signal processing are considered. Figure 15 Accuracy for signal processing of NTC Table 11 NTC characteristics example Steinhart-Hart coefficients Rmin [Ohm] T [°C] R max [Ohm] T [°C] A B C NTC 99 170 109945 -40 1.10937E-03 2.44772E-04 2.28348E-07 T--- AB R ()ln() CR ()ln() 3++= Resistance [Ohm] absolute error [°C]

Data Sheet 20 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Specification

3 Specification

3.1 Application Circuit Example

Figure 16 Application circuit example Attention: For the application PCB-layo ut, it is mandatory to route the NTC GND wire in such a way that the chip current or any other current does not run through any of the NTC input connections. Star ground connection is recommended for the NTC-GND and GND of the supply source. This will reduce the additional external voltage drop that could influence the external NTC accuracy. Table 12 Component values Component Symbol Values Unit Min. Typ. Max. Supply Blocking Capacitor C1 30 100 – nF NTC Capacitor C 2 – 330 – pF Pull-up Resistor R PULL-UP 10 – 55 KOhm Parasitic Input Capacitor C input ––0 . 1 n F Low Pass Resistor R Tau1 448 560 672 Ohm Low Pass Capacitor C Tau1 1.54 2.2 2.86 nF Low Pass Resistor - second stage R f 4––K O h m Low Pass Capacitor - second stage C f –4 7 –p F optional resistor R v – 100 – KOhm Filter Time Constant - first stage, determined by RTau1 and CTau1 Tau1 0.74 – 1.73 µs Filter Time Constant - second stage, determined by Rv, Rf and Cf Tau2 0.6 – 1.4 µs ECU VDD NTC Cinput RPULL-UP RTau1 CTau1 Rf Cf RV Microcontroller SENT HW Interface SENTIN GND VDD dTMAP Module ~~~

5 V Supply

Data Sheet 21 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Specification

3.2 Application Circuit Example for EMC

Figure 17 Application Circuit example for pulse immunity For pulse immunity an EMC filter consisting of a capacitor (C 3) followed by a resistor in series (R 2) with the SENTOUT Pin is recommended to attenuate RF energy coupled on the external signal line. In addition a filter consisting of the adapted supply capacitor (C 1) followed by a resistor in series (R 1) with the Supply Pin is recommended to attenuate RF energy coupled on the external supply line. Table 13 Component values Component Symbol Values Unit Min. Typ. Max. Supply Blocking Capacitor C1 – 330 – nF NTC Capacitor C 2 – 330 – pF SENT Filter Capacitor C 3 –1–n F Supply Filter Resistor R 1 –1 0 –O h m SENT Filter Resistor R 2 – 100 – Ohm ECU VDD NTC Cinput RPULL-UP RTau1 CTau1 Rf Cf RV Microcontroller SENT HW Interface SENTIN GND VDD dTMAP Module ~~~

Data Sheet 22 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Specification

3.3 Absolute Maximum Ratings

Attention: Stresses above the max. values listed in Table 14 “Absolute maximum ratings” on Page 22 may cause permanent damage to the device. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Maximum ratings are absolute ratings; exceeding only one of these values may cause irreversible damage to the integrated circuit. Note: The Voltage on SENT OUT must not exceed the Voltage on the VDD Pin. Table 14 Absolute maximum ratings Parameter Symbol Values Unit Note Number Min. Typ. Max. Voltage on GND & SENTOUT Vmax -0.3 – 16 V – 1.1 Voltage on VDD Vmax_VDD -16 – 16 V Reverse polarity protection against supply 1.2 Storage temperature TS -40 – 150 °C – 1.3 Maximum input pressure pamb_max – – 500 600 kPa kPa Limited time: Max. 300 s 1.4 ESD robustness Pins: VDD, GND, SENTout, NTCin Pins: NCS, CLK, SDI, SDO VESD –– kV kV Human Body Model R=1.5 kΩ, C=100pF 1.5

Data Sheet 23 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Specification

3.4 Operating Range

The following operating conditions must not be exceeded in order to ensu re correct operation of the device. All parameters specified in the following sections refer to these operating conditions, unless noted otherwise. Attention: The sensor must be operated in darkness. No exposure to light. Table 15 Operating range Parameter Symbol Values Unit Note Number Min. Typ. Max. Supply voltage VDD 4.5 5.0 5.5 V – 2.1 Supply voltage power up/power down gradient Vgrad 1E-5 – 1E4 V/ms – 2.2 Input voltage for low level at pins NCS, CLK & SDI Vlow_in -0.3 – 0.8 V – 2.3 Input voltage for high level at pins NCS, CLK & SDI V high_in 2.0 – 3 V – 2.4 Output voltage for low level at pin SDO Vlow_out ––0 . 4 V T e s t c u r r e n t a t p i n S D O is 1.5mA 2.5 Output voltage for high level at pin SDO Vhigh_out VDD - 0.4 – VDD V Test current at pin SDO is 1.5mA 2.6 Operating temperature Operating peak temperature Ta_peak – – +170 °C Limited time: Max. 20 min. 2.8 Ambient operating pressure range pamb 10 – 400 kPa – 2.9 Thermal resistance Rthj-pin – – 180 K/W Thermal resistance between the die and the pins, according to JESD51-2 2.10 Lifetime 1) The life time shall be considered as anticipation with re gard to the product that shall not extend the agreed warranty period. tlive 15 – – years – 2.11 Operating time top – – 10000 h – 2.12

Data Sheet 24 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Specification

3.5 Characteristics

Product characteristic s involve the spread of valu es guaranteed within the specified voltage and ambient temperature range. Typical characteristics are the median of the production. Table 16 General characteristics Parameter Symbol Values Unit Note Number Min. Typ. Max. Supply current into VDD1) 1) supply current depends on NTC resistor: additional current of approximately 2mA has to be considered with min RNTC (40 Ohm) connected IVDD –9– mA mA no NTC connected, no SENT filter NTC shorted to GND and SENT filter connected 3.1 Internal pressure update rate f update – 250 – kHz – 3.2 Pressure signal path latency2) 2) for more details see, Chapter 2.6.6 tpath_pres –12m s – 3 . 3 Temperature signal path latency tpath_temp – 100 500 ms NTC update rate 3.4 Start-up time3) Pressure 3) time from power-up until SENT transmission start tstart-up_pres –1 0 1 2 m s f o r p r e s s u r e channel 3.5 Start-up time Temperature tstart-up_temp – 300 500 ms for temperature channel 3.6 Table 17 Physical layer characteristics Parameter Symbol Values Unit Note Number Min. Typ. Max. Low state voltage level on SENTOUT VOL – – 0.5 V 0.1 mA DC load current 4.1 High state voltage level on SENTOUT VOH 4.1 – 5.5 V 0.1 mA DC load current 4.2 Length of one tick ttick –3 . 0 –µ s – 4 . 3 Clock tick time variation tickvar -20 – 18 % – 4.4 Nibble fall time tfall – – 6.5 µs From 3.8 V to 1.1 V 4.5 Nibble rise time trise – – 18.0 µs From 1.1 V to 3.8 V 4.6

Data Sheet 25 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Specification Jitter Δtfall – – 0.1 µs Edge to edge with static environment for any pulse period 4.7 Signal stabilization time tstable 6 – – µs Signal stabilization time below 1.39 V or above 3.8 V 4.8 Table 18 Transfer function characteristics Parameter Symbol Values Unit Note Number Min. Typ. Max. Sensitivity pressure S p –9 . 4 9 5 –L S B /kPa –5 . 1 Offset pressure of fsp – 98.05 – LSB – 5.2 Sensitivity temperature S T –8 . 0 –L S B /°C –5 . 3 Offset temperature offsT – 585.2 – LSB – 5.4 Accuracy pressure 40 kPa - 150 kPa acc p_mid -3.0 -5.2 -5.6 3.0 5.2 5.6 kPa 0°C - 85°C @-40°C @150°C 5.5a Accuracy pressure 10 kPa - 40 kPa acc p_low -4.0 -6.2 -6.6 4.0 6.2 6.6 kPa 0°C - 85°C @-40°C @150°C 5.5b Accuracy pressure 150 kPa - 400 kPa accp_high -4.0 -6.2 -6.6 4.0 6.2 6.6 kPa 0°C - 85°C @-40°C @150°C 5.5c Resistance value of NTC RNTC 0.040 – 127 KOhm – 5.6 Table 17 Physical layer characteristics (cont’d) Parameter Symbol Values Unit Note Number Min. Typ. Max.

Data Sheet 26 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor

Package Information

4 Package Information

For passivation the sensor is covered with a transparent gel.

4.1 PG-DSOF-8-162 Outline

OUTER DIMENSIONS DOES NOT INCLUDE PROTUSION OR INTRUSION OF 0.2 MAX. PER SIDE 1) VALID FOR THE WHOLE SEATING PLANE INCLUDED TIE BAR AREA

Data Sheet 27 Revision 1.0, 2016-06-20 KP275 Digital Absolute Pressure Sensor Green Product (RoHS compliant) To meet the world-wide customer requirements for en vironmentally friendly pro ducts and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pb-free finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020).

4.2 Identification Code

The identification code is provided in a machine readable format. The date and sales code are provided in human readable format. Figure 19 Identification Code The identification code for the KP275 is on the same side of the package as pin 8 (GND). For further information on alternative packages, please visit our website: http://www.infineon.com/packages. Dimensions in mm Data Matrix Code 8 x 18 Dots Dot Size: 0.15 mm x 0.15 mm Date Code Sales Code BYYW KP 275 W B: BE Location ´M´ = Malacca ´R´ = Regensburg YY: Year WW: Week

Data Sheet 28 Revision 1.0 2016-06-20 KP275 Digital Absolute Pressure Sensor

Revision History

5 Revision History

Page or Item Subjects (major changes since previous revision) Revision 1.0, 2016-06-20 change document status from target to final

Trademarks of Infineon Technologies AG AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, CoolMOS™, CoolSET™, CORE CONTROL™, CROSSAVE™, DAVE™, DI -POL™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPIM™, EconoPAC K™, EiceDRIVER™, eupec™, FCOS ™, HITFET™, HybridPACK™, I 2RF™, ISOFACE™, IsoPACK™, MIPAQ™, ModSTACK™, my- d™, NovalithIC™, OptiMOS™, ORIGA™, POWERCODE™, PRIMARION™, PrimeP ACK™, PrimeSTACK™, PRO-SIL™, PROFET™, RASIC™, ReverSave™, SatR IC™, SIEGET™, SINDRION™, SIPMOS™, SmartLEWIS™, SPOC™, SO LID FLASH™, TEMPFET™, thinQ! ™, TRENCHSTOP™, TriCore™. Other Trademarks Advance Design System™ (ADS) of Agilent Technologies, AMBA™, ARM™, MULTI-ICE™, KEIL™, PRIMECELL™, REALVIEW™, THUMB™, µVision™ o f ARM Limited, UK. AUTOSAR™ is licensed by AUTOSAR development partnership. Blue tooth™ of Bluetooth SIG Inc. CA T-iq™ of DECT Fo rum. COLOSSUS™, FirstGPS™ of Consortium. HYPERTERMINAL™ of Hil graeve Incorporated. IEC™ of Commission Electrot echnique Internationale. IrDA™ of Infrared Dat a Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATIO N. MATLAB™ of MathWorks, Inc. MAXIM™ of Maxim Integrated Prod ucts, Inc. MICROTEC™, NUCLEUS™ of Mentor Graphics Corporation. MIPI™ of MI PI Alliance, Inc. MIPS™ of MIPS Technologies, Inc., USA. muRata™ of MURATA MANUFACTURING CO., MICROWAVE OFFICE™ (MWO) of Applied Wave Research Inc., Om niVision™ of OmniVision Technologies, Inc. Openwave ™ Openwave TOKO™ of TOKO KABUSHIKI KAISHA TA. UNIX™ of X/Open Company Limited. VERILOG™, PALLADIUM ™ of Cadence Design Systems, Inc. VLYNQ™ of Texas Instruments Incorporated. VXWORKS™, WIND RIVER™ of WIND RIVER SYSTEMS, INC. ZETEX™ of Diodes Zetex Limited. Last Trademarks Update 2011-11-11 Edition 2016-06-20 Published by Infineon Technologies AG

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