Infineon KP264 User Manual

Product brief

XENSIV™ – KP264

Digital Barometric Air Pressure Sensor (BAP) supporting safety applications

The Infineon KP264 integrated pressure sensor is a miniaturized Digital Barometric Air

Pressure Sensor IC based on the capacitive principle. It is surface micro-machined with

a monolithic integrated fully digital signal conditioning circuit, implemented in state-of-

the-art 0.5 micron BiCMOS technology. The KP264 provides an SPI interface to enable

direct microcontroller connections with a minimum bill of materials.

The sensor is individually calibrated and temperature compensated, reducing soware

complexity by providing a direct readout of pressure and temperature. KP264 provides

a fast startup time of less than 10 ms, high accuracy of up to 1 kPa and dierent

sensitivities. Combined with the wide operating temperature range of -40 to 125 C°, high

ESD robustness, and excellent EMC performance, the KP264 is perfectly suited to the

harsh environmental conditions prevalent in automotive and industrial applications. The

“green” 8 pin SMD housing is protected by a 4-hole-lid with dedicated small 0.6 mm holes

for best particle protection.

With its safety manual including safety mechanisms, use case description and safety

analysis result it is ready to support safety critical ISO 26262 applications.

KP264 application circuit

Microcontroller

NCS

CLK

SDI

SDO

KP26x

GND

N.C.

PROG

3.3/5 V

100 nF

SPI interface

CLK

MOSI

MISO

Key features

High accuracy pressure sensing

›

up to ±1.5 kPa

Integrated temperature sensor

›

Pressure ranges 40-115 kPa

›

Wide operating temperature range

›

-40 to 125 C°

Digital SPI interface

›

Up to 10 bit pressure and

›

temperature resolution

Calibrated and compensated

›

Self-diagnosis features

›

Fast startup time of less than 10 ms

›

Green 8 pin SMD housing with

›

4-hole-lid (0.6 mm diameter)

Typical applications

Automotive engine management

›

Battery management systems

›

Small engine management

›

Industrial control

›

Altimeter

›

Weather station

›

Medical

›

www.infineon.com/pressure-sensors

Product brief

XENSIV™ – KP264

Digital Barometric Air Pressure Sensor (BAP) supporting safety applications

KP264 block diagram

Pressure

cells

Normal mode/

diagnosis mode

ADC

Digital

signal

processing

Temperature

sensor

Temperature

ADC

compensation

Voltage

regulator

Analog

Digital

VDDA

VDDD

interface

Reset

GND

Infineon Technologies oers an extensive product portfolio for

gasoline and diesel engine management systems and industrial

control applications. Our products range from micromachined

sensors, microcontrollers, and smart power ICs to voltage regula-

Parameter KP264 Unit

Pressure range 40.0 - 115.0 kPa

Accuracy ±1.5 kPa

Output format Digital SPI

Resolution 10 bits

Sensitivity 13.6 LSB/kPa

Supply voltage 3.3 - 5.0 V

Order code SP004854700

tors and other standard components. The KP264 is a digital inte-

grated pressure sensor for barometric pressure management, and

provides benchmark performance in terms of reliability, accuracy,

and ease-of-use.

Digital

core

PROM

SPI

interface

PROM

NCS

CLK

SDI

SDO

PROG

N.C.

Published by Infineon Technologies AG 81726 Munich, Germany

Document number: B142-I1037-V1-7600-EU-EC-P Date: 07 / 2020

Please note!

This Document is for information purposes only and any information given herein shall in no event be regarded as a warranty, guarantee or description of any functionality, conditions and/or quality of our products or any suitability for a particular purpose. With regard to the technical specifications of our products, we kindly ask you to refer to the relevant product data sheets provided by us. Our customers and their technical departments are required to evaluate the suitability of our products for the intended application.

We reserve the right to change this document and/or the information given herein at any time.

Additional information

For further information on technologies, our products, the application of our products, delivery terms and conditions and/or prices, please contact your nearest Infineon Technologies oice (www.infineon.com).

Warnings

Due to technical requirements, our products may contain dangerous substances. For information on the types in question, please contact your nearest Infineon Technologies oice.

Except as otherwise explicitly approved by us in a written document signed by authorized representatives of Infineon Technologies, our products may not be used in any lifeendangering applications, including but not limited to medical, nuclear, military, life-critical or any other applications where a failure of the product or any consequences of the use thereof can result in personal injury.