TLE493D-P3I8 has an SPI interface and arrives in 3 x 3mm VSON, while TLE493D-W3B6 and TLE493D-P3B6 have I2C interfaces and have 2.8 x 2.9 TSOP6 packaging – TLE493D-P3B6 is the more accurate of the two.
“The sensors [are] developed according to ISO26262 and provide built-in diagnosis functions to support functional safety applications,” according to the company. Also, they “offer low deviation over their lifetime – X/Y<1.7%, X-Y/Z=6.75%. Additionally, the system’s power consumption is low due to its wake-up mode”.
This deviation is over -40 to 105°C, and is not true of the TLE493D-W3B6 which has the reduced performance of 1.9% and 10% respectively – that is the difference between the two TSOP-I2C parts. Full operational range is -40 to +125°C and 2.8 to 5.5V.
Accuracy can be improved by applying corrections in the host MCU, for which the sensor also measures and outputs its own temperature.
Power consumption is a few mA operating, which drops to ≤1μA in deep sleep.
Generally, the MCU initiates each sample, which can be done at several kHz. To save power, the host can set the sensor to a self-sampling (16, 31, 125Hz or 1kHz) low-power mode, and the host can then sleep. If upper and lower thresholds for each magnetic axis in the sensor are crossed, the sensor initiates a hardware interrupt to wake the host – this is the ‘wake-up’ mode mentioned above.
To allow sensing at different distances, each sensor can be set into three sensitivity mode: ±50, ±100 or ±160mT.
Use is expected measuring mechanical angles and linear position associated with valves or pedals – including in the engine compartment – and controlling infotainment and navigation systems. Industrial and consumer applications are also envisaged.
Find the data sheets on these Infineon web pages:
TLE493D-W3B6
TLE493D-P3B6
TLE493D-P3I8
The same company released a set of ISO 26262 ASIL-B magnetic switch ICs in April
