Technical Support

The MLX91801/2 is a system-in-package (SIP) microcontroller with an MLX16 custom, ported pressure, plastic SO16 package combining an analog pressure sensor and a low-power sensor interface. Its primary use is in wireless tire pressure monitoring system applications. Using a suitable RF transmitter, the system can be used with existing remote door switch (RKE) systems as required by the specification. Typical power consumption in standby mode is less than 0.25μA to 25°C ambient temperature. The MLX91801/2 accepts inputs from external shock or roll sensors, enabling intelligent power management to maximize battery life.

The MLX91801/2 is a system-in-package (SIP) with a custom MLX16, ported pressure, plastic SO16 package microcontroller combining an analog pressure sensor and a low-power sensor interface. Its primary use is in wireless tire pressure monitoring system applications. Using a suitable RF transmitter, the system can be used with existing remote door switch (RKE) systems as required by the specification.

The MLX91801/2 accepts inputs from external shock or roll sensors, enabling intelligent power management to maximize battery life. The default pressure range is 100 - 800 kPa for the MLX91801 and 100 - 1400 kPa for the MLX91802.

Features:

Low power microcontroller pressure-temperature cell voltage monitor, ideal for TMPS

Ready to use with Melexis firmware (MLX91802) or customer firmware (MLX91801)

Different available pressure ranges up to 1400 kPa

Car and truck tire pressure measurement accuracy typical 1% of full scale range

Sleeping current 0.25μA

Operating mode 340μA

Pressure sensor and temperature compensated oscillator

Diagnostic system error detection

Motion detection with external shock sensor

Robust package

Withstand shock 4000g

7 GPIO pins (digital input/output, analog input)

Compatible with existing remote door switch (RKE) systems

Very sensitive 125 kHz LF interface used for short-range wireless communication

Automotive qualified

MLX91801 / 2 tire pressure monitoring system (TPMS) as well as low power wireless pressure temperature sensor battery common application examples.