Data Sheet,V1.1, Oct. 2003
Surface Mount Capacitive Silicon
Absolute Pressure Sensor
KP120, KP120 Exxxx
Sensors
N e v e r
s t o p
t h i n k i n g .
Edition 2003-10-17
Published by Infineon Technologies AG,
St.-Martin-Strasse 53,
81669 München, Germany
©
Infineon Technologies AG 2003.
All Rights Reserved.
Attention please!
The information herein is given to describe certain components and shall not be considered as a guarantee of
characteristics.
Terms of delivery and rights to technical change reserved.
We hereby disclaim any and all warranties, including but not limited to warranties of non-infringement, regarding
circuits, descriptions and charts stated herein.
Information
For further information on technology, delivery terms and conditions and prices please contact your 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 your nearest Infineon Technologies Office.
Infineon Technologies Components may only be used in life-support devices or systems 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.
Surface Mount Capacitive Silicon Absolute Pressure
Sensor
KP120, KP120 Exxxx
Features
•
•
•
•
•
•
Ratiometric analog output
Calibrated transfer function
High accuracy over a large temperature range
(1.5 kPa max. error over 0 ... 85 °C)
CMOS compatible surface micromachining
SMD housing
Customized transfer functions available
(KP120 Exxxx)
P-DSOF-8-5
Type
KP120
Ordering
Code
Pressure Range
Overall
Accuracy
1.2 kPa
Package
P-DSOF-8-5
Q62705-K352 40 kPa - 115 kPa
Product Description
The KP120 is a miniaturized absolute pressure sensor IC based on the capacitive
principle. It is surface micromachined with a monolithic integrated signal conditioning
circuit realized in the state-of-the-art 0.8 µm BiCMOS technology. As the KP120 is a high
precision IC for cost critical solutions the chip is packaged in a low cost SMD housing.
High accuracy and high sensitivity enable the dedication in automotive applications as
well as consumer products.
In the automotive field the manifold air pressure (MAP) and barometric air pressure
(BAP) are important parameters to compute the air-fuel ratio provided to the engine and
for controlling spark advance to optimize engine efficiency.
The IC consists of a surface micromachined pressure sensor, a sigma-delta A/D-
converter, a digital filter and the SPI-interface. In normal operation, the applied pressure
has to be in the range between 10 kPa and 150 kPa and the KP120, KP120 Exxxx can
deliver output voltages between 0.25 V and 4.85 V.
Data Sheet
3
V1.1 2003-10-17
KP120, KP120 Exxx
Pin Configuration
(top view)
Figure 1
Pin Definitions and Functions
Pin No.
1
2
3
4
5
6
7
8
Symbol
N.C.
SERIAL_CLK/
PROG_VOLT
SERIAL_IN
SERIAL_OUT
Function
Not to be connected
Used for calibration in manufacturing
Used for calibration in manufacturing
Used for calibration in manufacturing
5 V Supply voltage
0 V Circuit ground potential
Output
Not to be connected
V
DD
GND
V
OUT
N.C.
Data Sheet
4
V1.1, 2003-10-17
KP120, KP120 Exxx
Figure 2
Block Diagram of the KP120
Data Sheet
5
V1.1, 2003-10-17
嵌入式系统
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