KP229E2701 Datasheet by Infineon Technologies

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Sense & Control
Data Sheet
Revision 1.0, 2010-09-01
KP229E2701
Analog Absolute Pressure Sensor
TurboMAP
Analog Manifold Air Pressure Sensor IC
Edition 2010-09-01
Published by
Infineon Technologies AG
81726 Munich, Germany
©
2010
Infineon Technologies AG
All Rights Reserved.
Legal Disclaimer
The information given in this document shall in no event be regarded as a guarantee of conditions or
characteristics. With respect to any examples or hints given herein, any typical values stated herein and/or any
information regarding the application of the device, Infineon Technologies hereby disclaims any and all warranties
and liabilities of any kind, including without limitation, warranties of non-infringement of intellectual property rights
of any third party.
Information
For further information on technology, delivery terms and conditions and prices, please contact the nearest
Infineon Technologies Office (www.infineon.com).
Warnings
Due to technical requirements, components may contain dangerous substances. For information on the types in
question, please contact the nearest Infineon Technologies Office.
Infineon Technologies components may be used in life-support devices or systems only with the express written
approval of Infineon Technologies, if a failure of such components can reasonably be expected to cause the failure
of that life-support device or system or to affect the safety or effectiveness of that device or system. Life support
devices or systems are intended to be implanted in the human body or to support and/or maintain and sustain
and/or protect human life. If they fail, it is reasonable to assume that the health of the user or other persons may
be endangered.
infineon
KP229E2701
Analog Absolute Pressure Sensor
Data Sheet 3 Revision 1.0, 2010-09-01
@neon
KP229E2701
Analog Absolute Pressure Sensor
Data Sheet 4 Revision 1.0, 2010-09-01
Trademarks of Infineon Technologies AG
A-GOLD™, BlueMoon™, COMNEON™, CONVERGATE™, COSIC™, C166™, CROSSAVE™, CanPAK™,
CIPOS™, CoolMOS™, CoolSET™, CONVERPATH™, CORECONTROL™, DAVE™, DUALFALC™, DUSLIC™,
EasyPIM™, EconoBRIDGE™, EconoDUAL™, EconoPACK™, EconoPIM™, E-GOLD™, EiceDRIVER™,
EUPEC™, ELIC™, EPIC™, FALC™, FCOS™, FLEXISLIC™, GEMINAX™, GOLDMOS™, HITFET™,
HybridPACK™, INCA™, ISAC™, ISOFACE™, IsoPACK™, IWORX™, M-GOLD™, MIPAQ™, ModSTACK™,
MUSLIC™, my-d™, NovalithIC™, OCTALFALC™, OCTAT™, OmniTune™, OmniVia™, OptiMOS™,
OPTIVERSE™, ORIGA™, PROFET™, PRO-SIL™, PrimePACK™, QUADFALC™, RASIC™, ReverSave™,
SatRIC™, SCEPTRE™, SCOUT™, S-GOLD™, SensoNor™, SEROCCO™, SICOFI™, SIEGET™,
SINDRION™, SLIC™, SMARTi™, SmartLEWIS™, SMINT™, SOCRATES™, TEMPFET™, thinQ!™,
TrueNTRY™, TriCore™, TRENCHSTOP™, VINAX™, VINETIC™, VIONTIC™, WildPass™, X-GOLD™, XMM™,
X-PMU™, XPOSYS™, XWAY™.
Other Trademarks
AMBA™, ARM™, MULTI-ICE™, PRIMECELL™, REALVIEW™, THUMB™ of ARM Limited, UK. AUTOSAR™ is
licensed by AUTOSAR development partnership. Bluetooth™ of Bluetooth SIG Inc. CAT-iq™ of DECT Forum.
COLOSSUS™, FirstGPS™ of Trimble Navigation Ltd. EMV™ of EMVCo, LLC (Visa Holdings Inc.). EPCOS™ of
Epcos AG. FLEXGO™ of Microsoft Corporation. FlexRay is licensed by FlexRay Consortium.
HYPERTERMINAL™ of Hilgraeve Incorporated. IEC™ of Commission Electrotechnique Internationale. IrDA™ of
Infrared Data Association Corporation. ISO™ of INTERNATIONAL ORGANIZATION FOR STANDARDIZATION.
MATLAB™ of MathWorks, Inc. MAXIM™ of Maxim Integrated Products, Inc. MICROTEC™, NUCLEUS™ of
Mentor Graphics Corporation. Mifare™ of NXP. MIPI™ of MIPI Alliance, Inc. MIPS™ of MIPS Technologies, Inc.,
USA. muRata™ of MURATA MANUFACTURING CO. OmniVision™ of OmniVision Technologies, Inc.
Openwave™ Openwave Systems Inc. RED HAT™ Red Hat, Inc. RFMD™ RF Micro Devices, Inc. SIRIUS™ of
Sirius Sattelite Radio Inc. SOLARIS™ of Sun Microsystems, Inc. SPANSION™ of Spansion LLC Ltd. Symbian™
of Symbian Software Limited. TAIYO YUDEN™ of Taiyo Yuden Co. TEAKLITEof CEVA, Inc. TEKTRONIX™
of Tektronix Inc. 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 2009-10-19
KP229E2701 Analog Absolute Pressure Sensor
Revision History: 2010-09-01, Revision 1.0
Previous Revision: –
Page Subjects (major changes since last revision)
Change document status from target to final
@neon
KP229E2701
Analog Absolute Pressure Sensor
Table of Contents
Data Sheet 5 Revision 1.0, 2010-09-01
Table of Contents . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
List of Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
List of Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
1 Product Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.1 Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
1.2 Target Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
2 Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
2.1 Pin Configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.2 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
2.3 Block Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
2.4 Transfer Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
2.5 Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.1 Ratiometric Error . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.5.2 Overall Accuracy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
2.6 Output Voltage versus Load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
2.7 Timing Properties . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
3 Specification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.1 Application Circuit Example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
3.2 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
3.3 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
3.4 Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
4 Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.1 PG-DSOF-8-16 Outline . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
4.2 Identification Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Table of Contents
@neon
KP229E2701
Analog Absolute Pressure Sensor
List of Figures
Data Sheet 6 Revision 1.0, 2010-09-01
Figure 1 Pin configuration (top view, figure not to scale) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Figure 2 Functional block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Figure 3 Transfer function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Figure 4 Ratiometric error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Figure 5 Accuracy for pressure acquisition. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Figure 6 Maximum output voltage limit with pull-down load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 7 Minimum output voltage limit with pull-up load . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
Figure 8 Power-up time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 9 Response and stabilization time. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Figure 10 Application circuit example . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Figure 11 Package outline (all dimensions in mm) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Figure 12 Identification Code . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
List of Figures
@neon
KP229E2701
Analog Absolute Pressure Sensor
List of Tables
Data Sheet 7 Revision 1.0, 2010-09-01
Table 1 Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Table 2 Transfer function. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Table 3 Ratiometric Error. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Table 4 Accuracy. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Table 5 Component Values . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Table 6 Absolute Maximum Ratings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Table 7 Operating Range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Table 8 Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Table 9 Transfer Function . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
List of Tables
infineon flm RoHS ' 5‘ ‘H‘ %uahfled
Product Name Product Type Ordering Code Package
Analog Absolute Pressure Sensor KP229E2701 SP000699514 PG-DSOF-8-16
KP229E2701
Data Sheet 8 Revision 1.0, 2010-09-01
KP229E2701
Analog Absolute Pressure Sensor
Product Description
1 Product Description
The KP229E2701 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 300 kPa into
a voltage range of 0.40 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.
1.1 Features
Following features are supported by the KP229E2701:
High precision pressure sensing (± 2.5 kPa)
Ratiometric analog output
Large temperature range (-40 °C to 140 °C)
Broken wire detection
• Clamping
“Green” 8 pin SMD housing
Automotive qualified
1.2 Target Applications
The KP229E2701 is defined for use in following target applications:
Automotive applications (manifold air pressure measurement)
Industrial control
Consumer applications
Medical applications
Weather stations
• Altimeters
infineon
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 9 Revision 1.0, 2010-09-01
2 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.
@neon
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 10 Revision 1.0, 2010-09-01
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
1 TEST Test pin
1)
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 CLOCK / V
PROG
External clock for communication / programming voltage
1)
3 DATA IN Serial data input pin
1)
4 DATA OUT Serial data output pin
1)
5 V
DD
Supply voltage
6 GND Circuit ground potential
2)
2) It is recommended to connect both GND pins.
7 V
OUT
Analog pressure signal output
8 GND Circuit ground potential
2)
1
2
3
4
8
7
6
5
GND
V
OUT
GND
V
DD
DATA IN
TEST
CLOCK / V
PROG
DATA OUT
@neon
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 11 Revision 1.0, 2010-09-01
2.3 Block Diagram
Figure 2 shows the functional block diagram.
Figure 2 Functional block diagram
AD1 bit
DA
12 bit
1 kHz Linearization
OBD
VDD
Clock
Generator
Temperature
Compensation
Internal
Reference
Voltage
EEPROM
( 90+22 bit )
Digital
Control
Test and Programming
Interface
VDD
CLOCK /
VPROG
DATA
IN
GND
DATA
OUT
VOUT
30kHz
10 bit
Clamping
10 bit
@neon [1,"- __ f / / / _, H— —>I H— —>I
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 12 Revision 1.0, 2010-09-01
2.4 Transfer Function
The KP229E2701 device is fully calibrated on delivery. The sensor has a linear transfer function between the
applied pressure and the output signal:
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:
Note: The points
p
IN,1
/
V
OUT,1
and
p
IN,2
/
V
OUT,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 19
Figure 3 Transfer function
Note: The application circuitry determines the current driven by the device and thus may have an impact on the
output voltage delivered by the sensor.
Table 2 Transfer function
Pressure Output Voltage @ V
DD
= V
DD,Typ
Gain and Offset
Symbol Values Unit Symbol Values Unit Symbol Value Unit
p
IN,1
10 kPa V
OUT,1
0.40 V a0.00293 1/kPa
p
IN,2
300 kPa V
OUT,2
4.65 V b0.05069 –
V
OUT
= V
DD
x (a x P + b)
0
V
OUT
[V]
pressure [kPa]
0.0
1.0
3.0
2.0
4.0
5.0
50 100 150 200 250 300 350
operating pressure range
maximum input pressure range
@neon DD
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 13 Revision 1.0, 2010-09-01
2.5 Accuracy
The accuracy of the KP229E2701 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.
2.5.1 Ratiometric Error
Ideally the sensor is ratiometric - the output (V
OUT
) scales by the same ratio that
V
DD
increases or decreases. The
ratiometric error is defined as the difference between the ratio that
V
DD
changed and the ratio that
V
OUT
changed,
expressed as a percentage.
The output voltage
V
OUT
is ratiometric to
V
DD
.
V
DD
must be in the operating range provided in
Table 7
.
Figure 4 Ratiometric error
2.5.2 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
Table 3 Ratiometric Error
Supply voltage (V) Max. ratiometric error (
E
RAT
in % of V
DD, Typ
)
V
DD,Min
± 0.5
V
DD,Typ
0
V
DD,Max
± 0.5
E
RAT
(%) =
V
OUT
(@V
DD
) - V
OUT
(@5V) x
5V
V
DD
5V x 100%
-0.5
0
V
DD,MIN
V
DD
0.5
V
DD,MAX
V
DD,TYP
E
RAT
(%)
@neon
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 14 Revision 1.0, 2010-09-01
Note: Ratiometric signal error is not included in the overall accuracy. For error measurements, the supply voltage
must have the nominal value (
V
DD
=
V
DD,Typ
).
The error band is determined by three continuous lines through four relevant breakpoints.
Figure 5 Accuracy for pressure acquisition
Table 4 Accuracy
Temperature C] Error [kPa] Error Multiplier
-40 ±3.75 1.5
0 ±2.5 1.0
100 ±2.5 1.0
140 ±3.75 1.5
-40 0 100 140
error multiplier
temperature [°C]
absolute error [kPa]
0.0
0.5
1.5
1.0
2.0
2.5
2.50
3.75
@neon
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 15 Revision 1.0, 2010-09-01
2.6 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).
Figure 6 Maximum output voltage limit with pull-down load
Figure 7 Minimum output voltage limit with pull-up load
Note: 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.
0
0.10
0.20
0.30
0.40
0.50
0.0 0.2 0.4 0.6 0.8 1.0
20 10 550
0.1 source current [mA]
pull-up resistance [kΩ]
VOUT [V]
@neon
KP229E2701
Analog Absolute Pressure Sensor
Functional Description
Data Sheet 16 Revision 1.0, 2010-09-01
2.7 Timing Properties
Power-up Time
The power-up time
t
UP
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 V
OUT
open and constant input pressure).
Figure 8 Power-up time
Response Time and Stabilization Time
The response time
t
R
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 V
OUT
open).
The stabilization time
t
S
is defined as the time required by the output to meet the specified accuracy after the
pressure has been stabilized (assuming pin V
OUT
open).
Figure 9 Response and stabilization time
Note: The values in the diagrams are valid for the entire specified temperature range.
0
1
2
3
4
5
02.5 5 7.5 10 12.5 15
time [ms]
V
OUT
90% of Final Value
V
DD
t
UP
voltage [V]
constant input pressure
0
1
2
3
4
5
0 2
time [ms]
voltage [V]
0
20
40
60
80
100
120
pressure [kPa]
V
OUT
90% of final value
input pressure
t
R
10% of final value
t
S
within required accuracy
1 3 4 5
@neon
KP229E2701
Analog Absolute Pressure Sensor
Specification
Data Sheet 17 Revision 1.0, 2010-09-01
3 Specification
3.1 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.
C
2
,
R
1
and
R
2
can be omitted).
Figure 10 Application circuit example
Note: It is recommended to leave the digital pins CLOCK/V
PROG
, 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).
Table 5 Component Values
Component Symbol Values Unit
Min. Typ. Max.
Pull-Up Resistor
R
1
5 59 100 k
Pull-Down Resistor
R
2
5 59 100 k
Low Pass Resistor
R
3
3.9 22 100 k
Supply Blocking Capacitor
C
1
10 100 100 nF
Output Blocking Capacitor
C
2
0 100 100 nF
Low Pass Capacitor
C
3
10 100 100 nF
Microcontroller
ADC
Ref
A/D in
GND
5V
C
1
C
2
R
1
R
2
R
3
C
3
*)
*)
*) R
1
and R
2
only alternatively
KP
2xx
4
DATA OUT
3
DATA IN
2
CLOCK /
V
PROG
1
Test V
DD 5
GND
6
V
OUT 7
GND
8
n.c.
n.c.
n.c.
n.c.
@neon
KP229E2701
Analog Absolute Pressure Sensor
Specification
Data Sheet 18 Revision 1.0, 2010-09-01
3.2 Absolute Maximum Ratings
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.
Table 6 Absolute Maximum Ratings
Parameter Symbol Values Unit Note / Test Condition Number
Min. Typ. Max.
Supply voltage
V
DD_max
-0.3
-6.5
1)
1) Reverse polarity;
I
DD
< 300 mA
6.5
16.5
V
V
V
1 h @ 70°C
Limited time: Max.
300 s
1.1
Output voltage
V
OUT
-0.3 –
V
DD
+ 0.3 V 1.2
Voltage on
CLOCK / V
PROG
pin
V
CLK
20 V – 1.3
Voltage on
DATA IN &
DATA_OUT pins
V
DATA
– – 5 V 1.4
Storage
temperature
T
S
-60 150 °C – 1.5
Thermal resistance
R
thJA
180 K/W Thermal resistance
between the die and
ambient; according to
JESD51-2
1.6
Maximum input
pressure
p
amb_max
10 – 350
600
kPa
kPa
Limited time: Max. 300
s
1.7
ESD robustness
(HBM: 1.5 k
,
100 pF)
V
ESD
2 kV According to
EIA / JESD22-A114-E
1.8
@neon
KP229E2701
Analog Absolute Pressure Sensor
Specification
Data Sheet 19 Revision 1.0, 2010-09-01
3.3 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 Unit Note / Test Condition Number
Min. Typ. Max.
Supply voltage
V
DD
4.5 5.0 5.5 V
V
OUT
is ratiometric to
V
DD
2.1
Output current on
V
OUT
pin
I
OUT
-1
1
mA
mA
pull-down resistor used
pull-up resistor used
2.2
Operating
temperature
T
a
-40 140 °C 2.3
Ambient operating
pressure range
p
amb
10 300 kPa 2.4
Lifetime
1)
1) The life time shall be considered as anticipation with regard to the product that shall not extend the agreed warranty period.
t
live
15 – years 2.5
@neon
KP229E2701
Analog Absolute Pressure Sensor
Specification
Data Sheet 20 Revision 1.0, 2010-09-01
3.4 Characteristics
Table 8 Electrical Characteristics
Parameter Symbol Values Unit Note / Test Condition Number
Min. Typ. Max.
Output voltage
range
V
OUT_R
0.10 4.85 V See also section
“Output Voltage
versus Load” on
Page 15
3.1
Supply current
I
DD
8 10 mA During power up a peak
supply current of max.
22 mA is possible
3.2
Output referred
noise
V
NOISE
2.5
1.8
mV
RMS
mV
RMS
Frequency > 1 kHz
1)
Frequency < 1 kHz
1) 200 measurements in sequence, bandwidth limited to 40kHz
3.3
Response time
2)
2) More details in section
“Timing Properties” on Page 16
t
R
0.65 1.0
3)
3) The maximum response time considers a maximal value of 100nF for the output blocking capacitor C
2
and a maximum
pressure pulse equivalent 4.0V output change
ms 10% to 90% of the final
output value
3.4
Stabilization time
2)
t
S
10 ms For full accuracy 3.5
Power-up time
2)
t
UP
5 ms 90% of the final output
value
3.6
Broken wire:
Diagnosis response
time
4)
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
t
OBD
– – 1 ms 3.7
OBD transistor on
resistance
R
DSON
– – 160
3.8
@neon
KP229E2701
Analog Absolute Pressure Sensor
Specification
Data Sheet 21 Revision 1.0, 2010-09-01
Table 9 Transfer Function
Parameter Symbol Values Unit Note / Test Condition Number
Min. Typ. Max.
Sensitivity
S
– 14.7 – mV
/kPa
4.1
Accuracy pressure
(overall)
1)
1) More details in section
“Overall Accuracy” on Page 13
acc
p
-2.5
-3.75
-3.75
2.5
3.75
3.75
kPa
kPa
kPa
C up to 100 °C
@ -4C
@ 14C
4.2
Ratriometric error
2)
2) More details in section
“Ratiometric Error” on Page 13
E
RAT
-25 – 25 mV 4.3
Lower clamping
level
V
Cl_low
– 0.3 – V 4.4
Upper clamping
level
V
Cl_high
– 4.7 – V 4.5
Clamping level
error
V
Cl
-30 30 mV Accuracy of lower and
upper clamping level
4.6
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KP229E2701
Analog Absolute Pressure Sensor
Package Information
Data Sheet 22 Revision 1.0, 2010-09-01
4 Package Information
The PG-DSOF-8-16 package is optimized regarding external mechanical stress influences. The package fulfills
the solder conditions for lead-free board assembly. Details (soldering profile, application notes, etc.) are available
under:
www.infineon.com/package
.
Note:
In the application, it is recommended to ensure that the same pressure is applied to the whole package.
4.1 PG-DSOF-8-16 Outline
Figure 11 Package outline (all dimensions in mm)
OUTER DIMENSIONS DOES NOT INCLUDE PROTUSION
OR INTRUSION OF 0.2 MAX. PER SIDE
KP229E2701
Analog Absolute Pressure Sensor
Package Information
Data Sheet 23 Revision 1.0, 2010-09-01
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 12 Identification Code
The identification code for the KP229E2701 is on the same side of the package as pin 8 (GND).
Data Matrix Code
8 x 18 Dots
Dot Size:
0.15 mm x 0.15 mm
Date Code
Sales Code I
B Y Y W
K P 2 2 9
W
Sales Code II
E 2 7 0 1
B: BE Location
YY: Year
WW: Week
@neon
KP229E2701
Analog Absolute Pressure Sensor
Data Sheet 24 Revision 1.0, 2010-09-01
Published by Infineon Technologies AG
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