KP212F1701XTMA1

KP212F1701 Analog Absolute Pressure Sensor Features • High precision pressure sensing (± 1.4 kPa) • Ratiometric analog output • Large temperature range (-40 °C to 125 °C) • Broken wire detection • Clamping • “Green” 8 pin SMD housing • Automotive qualified Applications The KP212F1701 is defined for use in following target applications: • Two wheeler applications (manifold air pressure measurement) • Industrial control • Consumer application • Medical application Description The KP212F1701 is a miniaturized Analog Manifold Air Pressure Sensor IC based on a capacitive principle. It is surface micromachined with a monolithic integrated signal conditioning circuit implemented in BiCMOS technology. The sensor converts a pressure into an analog output signal. The calibrated transfer function converts a pressure of 10 kPa to 115 kPa into a voltage range of 0.4 V to 4.65 V. The chip is packaged in a “green” 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 and the high sensitivity of the device makes it a perfect fit for advanced automotive applications as well as in industrial and consumer applications. Type Package Ordering Code Marking KP212F1701 PG-DSOF-8-16 SP005435487 KP212F1701 Data Sheet www.infineon.com/sensors 1 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Table of Contents Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1 Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 1 1.1 1.2 1.3 1.4 1.5 1.5.1 1.5.2 1.6 1.7 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Transfer Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Ratiometric Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Overall Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 Output Voltage versus Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Timing Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10 2 2.1 2.2 2.3 2.4 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Application Circuit Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3 3.1 3.2 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 PG-DSOF-8-16 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16 Identification Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 4 Revision history . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18 Data Sheet 2 11 11 12 13 14 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1 Functional Description The pressure is detected by an array of capacitive surface micromachined sensor cells. The sensor cell output is amplified, temperature compensated and linearized to obtain an output voltage that is proportional to the applied pressure. The transfer function for linearization is computed in the digital part of the sensor using a third order polynomial calculation. The transfer function is created from the following parameters: • Minimum and maximum rated pressure • Voltage level at minimum and maximum rated pressure • Clamping levels The output is analog and ratiometric with respect to the supply voltage. All parameters needed for the complete calibration algorithm — such as offset, gain, temperature coefficients of offset and gain, and linearization parameters — are determined after assembly. The parameters are stored in an integrated E²PROM. The E²PROM content is protected with forward error correction (a one bit error is detected and corrected, errors of more than one bit are detected and the output signal is switched to ground potential). Clamping The output voltage is limited internally to two clamping threshold levels. Based on this feature, the open bond detection (OBD) is simplified and improved. Open Bond Detection The open bond detection, in conjunction with the clamping levels, eases the implementation of error and malfunction detection strategies (e.g. for On-Board Diagnosis requirements). The microcontroller can sample the output of the sensor and compare it with programmed overvoltage and undervoltage limits. When the sensor’s output voltage exceeds those limits, a broken wire condition is identified. When the chip is not powered properly, the JFET transistors of the broken wire detection stage are self-conducting. For example, if the GND connection is interrupted, the output is drawn strongly to VDD. Similarly, if the VDD connection is broken, the output is drawn to GND. Data Sheet 3 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1.1 Pin Configuration Figure 1 shows the pin configuration. Figure 1 1.2 TEST 1 8 GND CLOCK / VPROG 2 7 VOUT DATA IN 3 6 GND DATA OUT 4 5 VDD Pin configuration (top view, figure not to scale) Pin Description Table 1 shows the pin description. Table 1 Pin Description Pin No. Name Function 1 TEST Test pin1) 2 CLOCK / VPROG External clock for communication / programming voltage1) 3 DATA IN Serial data input pin1) 4 DATA OUT Serial data output pin1) 5 VDD Supply voltage 6 GND Circuit ground potential2) 7 VOUT Analog pressure signal output 8 GND Circuit ground potential2) 1) Digital pins are used only during calibration and test. It is recommended to leave these pins floating (in case of an open GND connection, the floating pins prevent from a cross grounding through the corresponding ESD diodes). 2) It is recommended to connect both GND pins. Data Sheet 4 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1.3 Block Diagram Figure 2 shows the functional block diagram. CLOCK / VPROG VDD Internal Reference Voltage EEPROM ( 90+22 bit ) DATA IN DATA OUT Test and Programming Interface Digital Control Temperature Compensation VOUT A D 1 bit 1 kHz 12 bit D Clamping Linearization 10 bit 10 bit A 30kHz VDD Clock Generator OBD GND Figure 2 Data Sheet Functional block diagram 5 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1.4 Transfer Function The KP212F1701 device is fully calibrated on delivery. The sensor has a linear transfer function between the applied pressure and the output signal: V OUT = VDD x (a x P + b) The output signal is ratiometric. Gain a and offset b are determined during calibration in order to generate the required transfer function. Calibrated Transfer Function The following calibration is adjusted with the parameters a and b: Table 2 Transfer function Pressure Output Voltage @ VDD = VDD,Typ Gain and Offset Values Unit Symbol Values Unit Symbol Value Unit pIN,1 10 kPa VOUT,1 0.40 V a 0.00810 1/kPa pIN,2 115 kPa VOUT,2 4.65 V b -0.00095 – Note: The points pIN,1/VOUT,1 and pIN,2/VOUT,2 define the calibrated transfer function and not the operating range. The operating pressure range is defined by the parameter 2.4 “Ambient operating pressure range” on Page 13. VOUT [V] Symbol 5.0 4.0 3.0 2.0 1.0 0.0 10 30 50 70 90 110 130 150 pressure [kPa] operating pressure range maximum input pressure range Figure 3 Note: Data Sheet Transfer function The application circuitry determines the current driven by the device and thus may have an impact on the output voltage delivered by the sensor. 6 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1.5 Accuracy The accuracy of the KP212F1701 sensor is influenced by the supply voltage (ratiometric error) as well as by pressure, temperature and aging effects. The specified value, calculated with the transfer function, represents the theoretical value (see Figure 3). The error equals the deviation between the measured output voltage value and the specified output voltage value. 1.5.1 Ratiometric Error Ideally the sensor is ratiometric - the output (VOUT) scales by the same ratio that VDD increases or decreases. The ratiometric error is defined as the difference between the ratio that VDD changed and the ratio that VOUT changed, expressed as a percentage. ERAT (%) = VOUT(@VDD) - V OUT(@5V) x 5V VDD 5V x 100% The output voltage VOUT is ratiometric to VDD. VDD must be in the operating range provided in Table 7. Table 3 Ratiometric Error Supply voltage (V) Max. ratiometric error (ERAT in % of VDD, Typ) VDD,Min ± 0.5 VDD,Typ 0 VDD,Max ± 0.5 ERAT (%) 0.5 0 -0.5 VDD,MIN VDD,TYP VDD,MAX VDD Figure 4 1.5.2 Ratiometric error Overall Accuracy Overall accuracy covers the entire pressure and temperature range from different sources of error including the following: • Pressure: Output deviation from target transfer function over the specified pressure range • Temperature: Output deviation over the temperature range • Aging: Parameter drift over life time Data Sheet 7 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description Note: Ratiometric signal error is not included in the overall accuracy. For error measurements, the supply voltage must have the nominal value (VDD = VDD,Typ). The error band is determined by three continuous lines through four relevant breakpoints. Accuracy Error [kPa] Error Multiplier -40 ±2.1 1.50 0 ±1.4 1.00 85 ±1.4 1.00 125 ±2.1 1.5 error multiplier Temperature [°C] 2.5 2.0 1.5 2.1 1.0 1.4 absolute error [kPa] Table 4 0.5 0.0 -40 0 85 125 temperature [°C] Figure 5 Data Sheet Accuracy for pressure acquisition 8 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1.6 Output Voltage versus Load The output voltage limits depend on: The value of the external load resistor. • The type of connection (pull-up or pull-down). VOUT [V] • 20 50 5.00 pull-down resistance [kΩ] 5 10 4.90 4.85 4.80 4.70 4.60 4.50 0.0 Figure 6 0.1 0.2 0.4 0.6 0.8 1.0 source current [mA] Maximum output voltage limit with pull-down load pull-up resistance [kΩ] VOUT [V] 50 20 10 5 0.50 0.40 0.30 0.20 0.10 0 0.0 Figure 7 Note: Data Sheet 0.1 0.2 0.4 0.6 0.8 1.0 source current [mA] Minimum output voltage limit with pull-up load The values in the diagrams are valid for the entire specified temperature range. The two diagrams above do not take into account clamping levels. In case clamping levels are implemented, the output voltage is clamped accordingly. 9 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Functional Description 1.7 Timing Properties voltage [V] Power-up Time The power-up time tUP is defined as the maximum time between the supply voltage reaching its operating range and the output voltage reaching 90% of its final value (assuming pin VOUT open and constant input pressure). 5 VDD 4 VOUT 3 90% of Final Value tUP 2 1 constant input pressure 0 2.5 0 5 7.5 10 12.5 15 time [ms] Figure 8 Power-up time 120 5 input pressure tS within required accuracy 4 90% of final value VOUT 3 100 80 60 tR 2 pressure [kPa] voltage [V] Response Time and Stabilization Time The response time tR is defined as the time required by the output to change from 10% to 90% of its final value after a specified pressure step (assuming pin VOUT open). The stabilization time tS is defined as the time required by the output to meet the specified accuracy after the pressure has been stabilized (assuming pin VOUT open). 40 10% of final value 1 20 0 0 0 1 2 3 4 5 time [ms] Figure 9 Response and stabilization time Note: The values in the diagrams are valid for the entire specified temperature range. Data Sheet 10 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Specification 2 Specification 2.1 Application Circuit Example It is recommended to protect the pressure sensor IC against overload and electro-magnetic interferences (as shown in Figure 10. The output circuit acts as a low-pass decoupling filter between the sensor IC output and the A/D input of the microcontroller. The shown application circuit example considers an increased cable length between the sensor and the microcontroller. A combined location on a PCB with reduced distance between the sensor and the controller allows a reduction of the numbers of the passive components (e.g. C2, R1 and R2 can be omitted). 5V n.c. n.c. 1 2 VDD Test CLOCK / VPROG KP 2xx GND 5 6 n.c. 3 DATA IN VOUT 7 n.c. 4 DATA OUT GND 8 Ref C1 R1 C2 ADC A/D in *) R3 C3 R 2 *) Microcontroller GND *) R1 and R2 only alternatively Figure 10 Note: Table 5 Application circuit example It is recommended to leave the digital pins CLOCK/VPROG, DATA IN and DATA OUT floating (in case of an open GND connection, the floating pins prevent from a cross grounding through the corresponding ESD diodes). Component Values Component Symbol Values Unit Min. Typ. Max. Pull-Up Resistor R1 5 59 100 kΩ Pull-Down Resistor R2 5 59 100 kΩ Low Pass Resistor R3 3.9 22 100 kΩ Supply Blocking Capacitor C1 10 100 100 nF Output Blocking Capacitor C2 0 100 100 nF Low Pass Capacitor C3 10 100 100 nF Data Sheet 11 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Specification 2.2 Table 6 Absolute Maximum Ratings Absolute Maximum Ratings Parameter Symbol Values Min. Typ. Max. Unit Note or Test Condition Number Supply voltage VDD_max -0.3 – -6.51) – – – 6.5 16.5 – V V V – 1.1 1 h @ 70°C Limited time: Max. 300 s Output voltage VOUT -0.3 – VDD + 0.3 V – 1.2 Voltage on CLOCK / VPROG pin VCLK – – 20 V – 1.3 Voltage on DATA IN & DATA_OUT pins VDATA – – 5 V – 1.4 Storage temperature TS -60 – 150 °C – 1.5 Thermal resistance RthJA – – 180 K/W Thermal resistance between the die and ambient; according to JESD51-2 1.6 Maximum input pressure pamb_max 10 – 150 600 kPa kPa ESD robustness (HBM: 1.5 kΩ, 100 pF) VESD – 2 kV – 1.7 Limited time: Max. 300 s According to EIA / JESD22-A114-E 1.8 1) Reverse polarity; IDD < 300 mA Attention: Stresses above the max. values listed in Table 6 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. Data Sheet 12 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Specification 2.3 Operating Range The following operating conditions must not be exceeded in order to ensure correct operation of the device. All parameters specified in the following sections refer to these operating conditions, unless noted otherwise. Table 7 Operating Range Parameter Symbol Values Min. Typ. Max. Unit Note or Test Condition Number Supply voltage VDD 4.5 5.0 5.5 V VOUT is ratiometric to 2.1 VDD Output current on VOUT pin IOUT – – 1 mA pull-down resistor used 2.2 -1 – – mA pull-up resistor used Operating temperature Ta -40 – 125 °C 2.3 Ambient operating pressure range pamb 10 – 115 kPa 2.4 Lifetime1) tlive 15 – – years 2.5 1) The life time shall be considered as anticipation with regard to the product that shall not extend the agreed warranty period. Data Sheet 13 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Specification 2.4 Table 8 Characteristics Electrical Characteristics Parameter Symbol Values Min. Typ. Max. Unit Note or Test Condition Number 3.1 Output voltage range VOUT_R 0.10 – 4.85 V See also section “Output Voltage versus Load” on Page 9 Supply current IDD – 8 10 mA During power up a peak 3.2 supply current of max. 22 mA is possible Output referred noise VNOISE – – – – 2.5 1.8 mVRMS Frequency > 1 kHz1) mVRMS Frequency < 1 kHz Response time2) tR – 0.65 1.03) ms 10% to 90% of the final 3.4 output value Stabilization time2) tS – – 10 ms For full accuracy – – 5 ms 90% of the final output 3.6 value tOBD Broken wire: Diagnosis response time4) – – 1 ms 3.7 OBD transistor on resistance – – 160 Ω 3.8 2) Power-up time tUP RDSON 3.3 3.5 1) 200 measurements in sequence, bandwidth limited to 40kHz 2) More details in section “Timing Properties” on Page 10 3) The maximum response time considers a maximal value of 100nF for the output blocking capacitor C2 and a maximum pressure pulse equivalent 4.0V output change 4) In the event of a broken wire (broken VDD line or broken GND line), the output changes to certain voltage levels within the broken wire response time. The OBD ranges are determined by the application circuitry Data Sheet 14 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Specification Table 9 Transfer Function Parameter Symbol Values Unit Min. Typ. Max. Note or Test Condition Number Sensitivity S – 40.5 – mV /kPa 4.1 Accuracy pressure (overall)1) accp -1.4 -2.1 -2.1 – – – 1.4 2.1 2.1 kPa kPa kPa Ratiometric error2) ERAT -25 – 25 mV 4.3 Lower clamping level VCl_low – 0.3 – V 4.4 Upper clamping level VCl_high – 4.8 – V 4.5 Clamping level error ΔVCl -30 – 30 mV 0°C up to 85 °C @ -40°C @ 125°C 4.2 Accuracy of lower and 4.6 upper clamping level 1) More details in section “Overall Accuracy” on Page 7 2) More details in section “Ratiometric Error” on Page 7 Data Sheet 15 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Package Information 3 Package Information For passivation the sensor is covered with a transparent gel. The PG-DSOF-8-16 package is optimized regarding external mechanical stress influences. The package fulfills the solder conditions for lead-free board assembly. 3.1 PG-DSOF-8-16 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 Figure 11 Data Sheet Package outline 16 Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Package Information Green Product (RoHS compliant) To meet the world-wide customer requirements for environmentally friendly products and to be compliant with government regulations the device is available as a green product. Green products are RoHS-Compliant (i.e Pbfree finish on leads and suitable for Pb-free soldering according to IPC/JEDEC J-STD-020). 3.2 Identification Code Figure 12 Date Code Sales Code I Sales Code II K P 2 1 2 F 1 7 0 1 Data Matrix Code 8 x 18 Dots Dot Size: 0.15 mm x 0.15 mm B Y Y WW The identification code is provided in a machine readable format. The date and sales code are provided in human readable format. B: YY: WW: BE Location Year Week Identification code The identification code for the KP212F1701 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. Data Sheet 17 Dimensions in mm Revision 1.0 2020-07-08 KP212F1701 Analog Absolute Pressure Sensor Revision history 4 Revision history Revision Date 1.0 2020-07-08 Data Sheet Changes 18 Revision 1.0 2020-07-08 Please read the Important Notice and Warnings at the end of this document Trademarks of Infineon Technologies AG µHVIC™, µIPM™, µPFC™, AU-ConvertIR™, AURIX™, C166™, CanPAK™, CIPOS™, CIPURSE™, CoolDP™, CoolGaN™, COOLiR™, CoolMOS™, CoolSET™, CoolSiC™, DAVE™, DI-POL™, DirectFET™, DrBlade™, EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPACK™, EconoPIM™, EiceDRIVER™, eupec™, FCOS™, GaNpowIR™, HEXFET™, HITFET™, HybridPACK™, iMOTION™, IRAM™, ISOFACE™, IsoPACK™, LEDrivIR™, LITIX™, MIPAQ™, ModSTACK™, my-d™, NovalithIC™, OPTIGA™, OptiMOS™, ORIGA™, PowIRaudio™, PowIRStage™, PrimePACK™, PrimeSTACK™, PROFET™, PRO-SIL™, RASIC™, REAL3™, SmartLEWIS™, SOLID FLASH™, SPOC™, StrongIRFET™, SupIRBuck™, TEMPFET™, TRENCHSTOP™, TriCore™, UHVIC™, XHP™, XMC™. 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