Pressure sensor Infineon KP234. Free Technical Library News

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Pressure sensor Infineon KP234

12.11.2017

Infineon's KP234XTMA1 pressure sensor is an analog barometric pressure sensor with ratiometric output. Despite the analog type of output, the pressure transmitter uses internal digital processing to compensate for temperature effects and linearize the output characteristic.

The sensor converts a pressure range of 40 to 115 kPa into a DC voltage of 1,33 to 4,70 V. High sensitivity and good accuracy make the KP234XTMA1 an excellent choice for both advanced automotive applications and industrial and consumer markets.

Features of KP234:

High measurement accuracy: +- 1,5 kPa;
Ratiometric analog output;
Wide operating temperature range: -40...125 °C;
Power line break detection;
Automotive certification.

The measured pressure is detected using a set of microminiature capacitors (MEMS technology). To ensure high linearity, the transfer function is calculated in the digital part of the crystal using a third-order polynomial. All parameters that are required for an accurate calculation of the output value, namely - offset, gain, temperature coefficients, linearization parameters - are determined during the production of the microcircuit and stored in the internal EEPROM. The contents of the EEPROM are protected at the hardware level using an error correction mechanism (FEC).

Areas of use:

Automotive equipment;
Industrial automation;
consumer products;
Medical equipment;
weather stations;
Altimeters.

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